Abstract
C10H13NO2, monoclinic, P21 (no. 14), a = 9.9882(7) Å, b = 8.5202(6) Å, c = 23.1403(18) Å, β = 91.010(2)°, V = 1969.0(2) Å3, Z = 8, Rgt(F) = 0.0387, wRref(F2) = 0.0919, T = 173(2)K.
The asymmetric unit of the title crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.
Data collection and handling.
Crystal: | Colorless block |
Size: | 0.28 × 0.27 × 0.09 mm |
Wavelength: | Mo Kα radiation (0.71073 Å) |
μ: | 0.08 mm−1 |
Diffractometer, scan mode: | Bruker Kappa Duo Apex II, 0.5 φ and ω-scans |
θmax, completeness: | 28.4°, >99% |
N(hkl)measured, N(hkl)unique, Rint: | 22398, 5260, 0.043 |
Criterion for Iobs, N(hkl)gt: | Iobs > 2 σ(Iobs), 4403 |
N(param)refined: | 493 |
Programs: | Bruker programs [1], SHELX [2], OLEX2 [3] |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).
Atom | x | y | z | Uiso*/Ueq |
---|---|---|---|---|
O1A | 0.60629(15) | 1.10819(19) | 0.95547(7) | 0.0377(4) |
O2A | 0.44376(13) | 0.98681(19) | 0.90310(7) | 0.0383(4) |
N1A | 0.66202(17) | 0.9735(2) | 0.87845(8) | 0.0298(4) |
H1A | 0.738(2) | 0.999(3) | 0.8882(10) | 0.032(6)* |
C1A | 0.5056(3) | 1.1659(4) | 0.99337(12) | 0.0537(7) |
H1A1 | 0.4423 | 1.2318 | 0.9715 | 0.081* |
H1A2 | 0.5480 | 1.2282 | 1.0242 | 0.081* |
H1A3 | 0.4577 | 1.0772 | 1.0103 | 0.081* |
C2A | 0.56111(19) | 1.0192(2) | 0.91123(9) | 0.0272(4) |
C3A | 0.6450(2) | 0.8765(2) | 0.82735(9) | 0.0279(4) |
H3A | 0.5490 | 0.8830 | 0.8146 | 0.033* |
C4A | 0.7303(2) | 0.9453(3) | 0.77927(10) | 0.0379(5) |
H4A1 | 0.7014 | 1.0530 | 0.7711 | 0.057* |
H4A2 | 0.7195 | 0.8814 | 0.7443 | 0.057* |
H4A3 | 0.8247 | 0.9455 | 0.7916 | 0.057* |
C5A | 0.67765(19) | 0.7044(2) | 0.83888(9) | 0.0262(4) |
C6A | 0.7199(2) | 0.6507(3) | 0.89245(9) | 0.0311(5) |
H6A | 0.7290 | 0.7224 | 0.9237 | 0.037* |
C7A | 0.7494(2) | 0.4925(3) | 0.90126(10) | 0.0386(5) |
H7A | 0.7772 | 0.4571 | 0.9385 | 0.046* |
C8A | 0.7384(2) | 0.3877(3) | 0.85652(12) | 0.0421(6) |
H8A | 0.7605 | 0.2804 | 0.8623 | 0.051* |
C9A | 0.6949(2) | 0.4397(3) | 0.80298(11) | 0.0416(6) |
H9A | 0.6858 | 0.3673 | 0.7719 | 0.050* |
C10A | 0.6645(2) | 0.5960(3) | 0.79413(10) | 0.0359(5) |
H10A | 0.6342 | 0.6300 | 0.7570 | 0.043* |
O1B | 0.09585(14) | 1.08211(18) | 0.96694(7) | 0.0363(4) |
O2B | −0.05797(14) | 1.0114(2) | 0.89966(7) | 0.0442(4) |
N1B | 0.15492(18) | 0.9229(2) | 0.89644(8) | 0.0298(4) |
H1B | 0.230(3) | 0.942(3) | 0.9106(12) | 0.052(8)* |
C1B | −0.0048(3) | 1.1743(4) | 0.99480(13) | 0.0548(7) |
H1B1 | −0.0349 | 1.2584 | 0.9688 | 0.082* |
H1B2 | 0.0329 | 1.2203 | 1.0303 | 0.082* |
H1B3 | −0.0810 | 1.1072 | 1.0043 | 0.082* |
C2B | 0.05556(19) | 1.0054(2) | 0.91884(9) | 0.0268(4) |
C3B | 0.1386(2) | 0.8344(2) | 0.84268(9) | 0.0289(4) |
H3B | 0.0411 | 0.8351 | 0.8320 | 0.035* |
C4B | 0.2129(2) | 0.9146(3) | 0.79409(10) | 0.0394(5) |
H4B1 | 0.1772 | 1.0206 | 0.7883 | 0.059* |
H4B2 | 0.2011 | 0.8539 | 0.7584 | 0.059* |
H4B3 | 0.3085 | 0.9208 | 0.8042 | 0.059* |
C5B | 0.1802(2) | 0.6645(2) | 0.85115(9) | 0.0272(4) |
C6B | 0.0860(2) | 0.5460(3) | 0.84920(9) | 0.0331(5) |
H6B | −0.0055 | 0.5715 | 0.8422 | 0.040* |
C7B | 0.1225(3) | 0.3905(3) | 0.85723(11) | 0.0411(6) |
H7B | 0.0562 | 0.3106 | 0.8560 | 0.049* |
C8B | 0.2543(3) | 0.3516(3) | 0.86688(11) | 0.0417(6) |
H8B | 0.2797 | 0.2450 | 0.8720 | 0.050* |
C9B | 0.3495(2) | 0.4685(3) | 0.86909(11) | 0.0430(6) |
H9B | 0.4408 | 0.4422 | 0.8760 | 0.052* |
C10B | 0.3131(2) | 0.6243(3) | 0.86134(11) | 0.0372(5) |
H10B | 0.3796 | 0.7040 | 0.8630 | 0.045* |
O1C | 0.38607(14) | 0.03322(18) | 0.54082(6) | 0.0352(3) |
O2C | 0.20286(14) | 0.1213(2) | 0.58636(7) | 0.0400(4) |
N1C | 0.40982(18) | 0.2200(2) | 0.60562(8) | 0.0291(4) |
H1C | 0.489(2) | 0.207(3) | 0.6017(10) | 0.029(6)* |
C1C | 0.3055(3) | −0.0822(3) | 0.51168(12) | 0.0530(7) |
H1C1 | 0.2619 | −0.1489 | 0.5403 | 0.080* |
H1C2 | 0.3624 | −0.1470 | 0.4871 | 0.080* |
H1C3 | 0.2372 | −0.0298 | 0.4877 | 0.080* |
C2C | 0.32299(19) | 0.1245(2) | 0.57879(9) | 0.0268(4) |
C3C | 0.3727(2) | 0.3192(2) | 0.65363(10) | 0.0311(5) |
H3C | 0.2729 | 0.3291 | 0.6525 | 0.037* |
C4C | 0.4114(3) | 0.2426(3) | 0.71083(11) | 0.0512(7) |
H4C1 | 0.3670 | 0.1403 | 0.7137 | 0.077* |
H4C2 | 0.3833 | 0.3099 | 0.7427 | 0.077* |
H4C3 | 0.5087 | 0.2281 | 0.7129 | 0.077* |
C5C | 0.43006(19) | 0.4834(2) | 0.64871(9) | 0.0266(4) |
C6C | 0.5627(2) | 0.5082(2) | 0.63401(9) | 0.0309(4) |
H6C | 0.6191 | 0.4212 | 0.6263 | 0.037* |
C7C | 0.6133(2) | 0.6598(3) | 0.63053(10) | 0.0355(5) |
H7C | 0.7039 | 0.6757 | 0.6202 | 0.043* |
C8C | 0.5333(2) | 0.7868(3) | 0.64198(10) | 0.0367(5) |
H8C | 0.5682 | 0.8903 | 0.6395 | 0.044* |
C9C | 0.4016(3) | 0.7626(3) | 0.65722(12) | 0.0424(6) |
H9C | 0.3458 | 0.8498 | 0.6656 | 0.051* |
C10C | 0.3509(2) | 0.6118(3) | 0.66035(10) | 0.0368(5) |
H10C | 0.2602 | 0.5964 | 0.6707 | 0.044* |
O1D | 0.83908(14) | 0.03316(18) | 0.53816(7) | 0.0350(3) |
O2D | 0.69544(13) | 0.14204(18) | 0.60124(7) | 0.0350(4) |
N1D | 0.91922(17) | 0.1796(2) | 0.60927(8) | 0.0289(4) |
H1D | 0.993(2) | 0.156(3) | 0.5961(9) | 0.028(6)* |
C1D | 0.7278(2) | −0.0397(3) | 0.50809(11) | 0.0444(6) |
H1D1 | 0.6843 | −0.1146 | 0.5339 | 0.067* |
H1D2 | 0.7603 | −0.0952 | 0.4740 | 0.067* |
H1D3 | 0.6633 | 0.0410 | 0.4960 | 0.067* |
C2D | 0.80904(19) | 0.1205(2) | 0.58448(9) | 0.0250(4) |
C3D | 0.9162(2) | 0.2770(2) | 0.66051(9) | 0.0273(4) |
H3D | 0.8220 | 0.2765 | 0.6744 | 0.033* |
C4D | 1.0034(2) | 0.2041(3) | 0.70809(10) | 0.0399(5) |
H4D1 | 0.9678 | 0.1007 | 0.7182 | 0.060* |
H4D2 | 1.0031 | 0.2720 | 0.7423 | 0.060* |
H4D3 | 1.0952 | 0.1928 | 0.6945 | 0.060* |
C5D | 0.95261(18) | 0.4468(2) | 0.64811(9) | 0.0259(4) |
C6D | 0.9849(2) | 0.4992(2) | 0.59351(9) | 0.0316(5) |
H6D | 0.9876 | 0.4269 | 0.5623 | 0.038* |
C7D | 1.0136(2) | 0.6574(3) | 0.58386(11) | 0.0406(5) |
H7D | 1.0348 | 0.6920 | 0.5461 | 0.049* |
C8D | 1.0112(2) | 0.7638(2) | 0.62885(12) | 0.0409(6) |
H8D | 1.0314 | 0.8712 | 0.6223 | 0.049* |
C9D | 0.9795(2) | 0.7123(3) | 0.68291(12) | 0.0401(6) |
H9D | 0.9772 | 0.7851 | 0.7140 | 0.048* |
C10D | 0.9508(2) | 0.5556(3) | 0.69308(10) | 0.0341(5) |
H10D | 0.9296 | 0.5221 | 0.7310 | 0.041* |
Source of material
The resorcarene (0.125 mmol), which was isolated by column chromatography, was dissolved in anhydrous methanol (3 mL), and a freshly prepared sodium methoxide solution (1 M, 100 μL) was added. The reaction mixture was stirred at room temperature for 2−3 h and then neutralized with Amberlite IRC-50H resin. The resin was removed by filtration through a glass wool plug and was washed with ethyl acetate. The solvent was removed under reduced pressure, and the crude product was purified by column chromatography (eluted with hexane/EtOAc (60:10 to 60:40) to yield enantiomerically pure tetramethoxyresorcarenes. We obtained methyl 1-phenylethylcarbamate as colorless crystals (10% yield) M.p. = 333–335 °K. Crystals suitable for X-ray diffraction were obtained by slow evaporation of the hexane/EtOAc (60:10) solvent fraction at room temperature.
Experimental details
All hydrogen atoms, except the amino hydrogen atoms, were placed in idealised positions and refined in riding models with Uiso assigned the values to be 1.2 or 1.5 times those of their parent atoms and the constraint distances of C—H ranging from 0.95 Å to 1.00 Å. The amino hydrogen atoms were located in the difference electron density maps and refined without any restraints.
Discussion
Carbamates like the title compound are generally prepared from phosgene, phosgene derivatives or isocyanates [4], [5]. Such chiral amine synthons have been used for the construction of pharmaceuticals and natural products. In particular, cyclic derivatives of these chiral synthons have been used in the construction of peptidomimetics.
Protection of organic functions plays a fundamental role in the field of multi-step organic synthesis [6]. Amine functions are found in a great number of biologically active compounds, making their protection an important question in synthetic and medicinal chemistry [7]. Many methods have been employed to protect this group. The N-methyloxycarbonylation has been applied due to ease of addition and removal. The methyloxy group is very stable in a wide range of synthetic conditions. The structures of these protected compounds have been rarely reported [6], [7], [8], [9].
For the preparation of enantiomerically pure C4-symmetric tetramethoxy-resorcarenes we synthesized tetramethoxy-resorcarenecarbamate derivatives by reacting tetramethoxy-resorcarenes with (S)-(-)-1-phenylethyl isocyanate [10]. We obtained methyl 1-phenylethylcarbamate as one by-product during the hydrolysis step while obtaining the desired enantiomerically pure tetramethoxy-resorcarenes [10].
There are four crystallographically independent molecules in the asymmetric unit. Each of these four molecules has as its fundamental moiety a carbamate functional group (cf. the figure). The molecules are aligned via N—H⋯O hydrogen bonding interactions. This connects two crystallographically independent molecules creating two chains along the [010] axis and a layered structure across the ac plane.
Acknowledgements
We are grateful for the financial support from DST – National Research Foundation Centre of Excellence in Catalysis, C*change and Dr. Hong Su from the Chemistry Department of the University of Cape Town for her assistance with the data collection and refinement.
References
Bruker. APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, WI, USA (2012).Suche in Google Scholar
Sheldrick, G. M.: A short history of SHELX. Acta Crystallogr. A64 (2008) 112–122.10.1107/S0108767307043930Suche in Google Scholar
Dolomanov, O. V.; Bourhis, L. J.; Gildea, R. J.; Howard, J. A. K.; Puschmann, H.: OLEX2: a complete structure solution, refinement and analysis program. J. Appl. Crystallogr. 42 (2009). 339–341.10.1107/S0021889808042726Suche in Google Scholar
Ozaki, S.: Recent advances in isocyanate chemistry. Chem. Rev. 72 (1972) 457–478.10.1021/cr60279a002Suche in Google Scholar
Jager, P.; Rentzea, C. N.; Kieczka, H.: In Ullmann’s encyclopedia of industrial chemistry, 5th ed.; VCH, Weinheim (1986) 51.Suche in Google Scholar
Greene, T. W.; Wuts, P. G. M.: Protecting group in organic synthesis. 3rd ed. Wiley, New York (1999).10.1002/0471220574Suche in Google Scholar
Kocienski, P. J.: Protecting groups. Georg Thieme, New York (2000).Suche in Google Scholar
Theodoridis, G.: Nitrogen protecting groups: recent developments and new applications. Tetrahedron 56 (2000) 2339–2358.10.1016/S0040-4020(99)00980-1Suche in Google Scholar
Sartori, G.; Ballini, R.; Bigi, F.; Bosica, G.; Maggi, R.; Righi, P.: Protection (and deprotection) of functional groups in organic synthesis by heterogeneous catalysis. Chem. Rev. 104 (2004) 199–250.10.1021/cr0200769Suche in Google Scholar PubMed
Thakar, A. S.; Parekh, H. M.; Pansuriya, P. B.; Friedrich, H. B.; Maguire, G. E. M.: The preparation of enantiomerically pure C4-symmetric tetramethoxy-resorcarenes obtained from (S)-(-)-1-phenylethyl isocyanate derivatives. Eur. J. Org. Chem. (2014) 4600–4609.10.1002/ejoc.201402125Suche in Google Scholar
©2018 Amit S. Thakar et al., published by De Gruyter, Berlin/Boston
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Artikel in diesem Heft
- Cover and Frontmatter
- Crystal structure of (E)-1-(4-(((E)-2-hydroxy-5-methylbenzylidene)amino)phenyl)ethan-1-one O-methyl oxime, C17H18N2O2
- Crystal structure of 1,3,5,7-tetraazaadamantane-1,3-diium 2,5-dicarboxyterephthalate, C16H18N4O8
- Crystal structure of guanidinium tetrabutyl-ammonium 5-hydroxyisophthalate dihydrate, C25H50N4O7
- Crystal structure of poly[aqua-(μ2-5-methoxyisophthalate-κ3O,O′:O′′)-(μ2-1,4-bis((1H-1,2,4-triazol-1-yl)methyl)benzene-κ2N:N′)nickel(II), NiC21H20N6O6
- Crystal structure of aqua-bis(3,4-dimethoxybenzoato-κ1O)-(2,2′-bipyridine-κ2N,N′)copper(II), C28H26CuN2O9
- Crystal structure of catena-poly[aqua-(μ2-(3,5-di(1H-imidazol-1-yl)-pyridine-κ2N:N′)-(μ2-2-(carboxylatomethyl)benzoato-κ2O:O′)] cadmium(II), C20H17CdN5O5
- The crystal structure of catena-poly[chlorido-(μ2-5-methyl-1,3,4-thiadiazole-2-thiolato-κ2S:N)mercury(II)], C3H3ClHgN2S2
- Crystal structure of (E)-2,4-dichloro-6-(((4-methyl-2-nitrophenyl)imino)methyl)phenol, C14H10Cl2N2O3
- Crystal structure of a new polymorph of bis[μ-1,3-bis(diphenylphosphino)propane-κ2P:P′-disilver(I)] bis(tetrafluoroborate), [Ag(dppp)]2(BF4)2, C54H52Ag2B2F8P4
- The crystal structure of 2-phenyl-4,6-bis(R-tert-butylsulfonamido)-1,3,5-triazine – ethyl acetate (2/1), C38H58N10O6S4
- Crystal structure of 6-amino-8-(2-methoxy-phenyl)-2-methyl-2,3,8,8a-tetrahydro-1H-iso-quinoline-5,7,7-tricarbonitrile monohydrate, C20H21N5O2
- Crystal structure of methyl (1-phenylethyl)carbamate, C10H13NO2
- Crystal structure of dimethanol-(μ2-squarato-κ2O:O′)-tetrakis(tri-p-tolylphosphane-κP)disilver(I) – methanol (1/2), C92H98Ag2O8P4
- Crystal structure of catena-poly[bis(μ2-1,4-bis(triazol-1-ylmethyl)benzene-κ2N:N′)-bis(5-tert-butyl-isophthalate-κO)copper(II)]tetrahydrate, C36H46CuN6O12
- Crystal structure of 4-aminopyridinium 4-acetyl-(pyridin-4-yl)-1H-1,2,3-triazol-5-olate monohydrate, C14H16N6O3
- Crystal structure of 2-(8-bromo-2-phenylimidazo[1,2-α]pyridin-3-yl)-6,7-dimethyl-3-phenylquinoxaline, C29H21BrN4
- Crystal structure of aqua(1-(2-pyridyl)ethanone oxime-κ2N,N′)(1-(2-pyridyl)ethanone oximato-κ2N,N′) nitrate monohydrate, C14H19N5O7Cu
- Crystal structure of poly[tetraaqua-(μ4-oxalato-κ4O,O′:O′′,O′′′)-(μ8-benzene-1,2,4,5-tetracarboxylato-κ8O1:O2:O3:O4:O5:O6:O7:O8)yttrium(III)], C6H5O8Y
- Crystal structure of bis{catena-poly[(μ2-1,2-bis(4-pyridyl)ethane-κ2N:N′)silver(I)]} diaqua-bis(5-(4-carboxyphenyl)pyridine-2-carboxylato-κ2N,O)-(μ2-1,2-bis(4-pyridyl)ethane-κ2N:N′)disilver(I) octahydrate, C31H35Ag2N4O9
- Crystal structure of (E)-N-(2-(benzylamino)-2-oxo-1-(4-oxo-4H-chromen-3-yl)ethyl)-N-(4-bromophenyl)-3-chloroacrylamide hydrate, C27H22BrClN2O5
- Crystal structure of catena-poly[octaaqua-bis(μ2-4,6-dicarboxyisophthalate-κ2O:O′)cadmium(II)disodium(I)] dihydrate, C20H28CdNa2O26
- Crystal structure of acetonitrile{bis(2-benzimidazolylmethyl)amine-κ3N,N′,N′′}-{maleato-κO}zinc(II) perchlorate - acetonitrile (1/1), C24H24ClN7O8Zn
- Crystal structure of 2-amino-4-(3,5-dibromo-4-hydroxyphenyl)-7-methyl-5-oxo-2H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C16H10Br2N2O4
- Crystal structure of catena-poly[diaqua-(μ2-3,5-bis(pyridin-4-ylmethoxy)benzoate-κ2N:O) manganese(II)] tetrahydrate [(3,5-bis-(pyridin-4-ylmethoxy)-benzoic-κ1Oκ1N) manganese(II)] trihydrate, C38H42MnN4O14
- The crystal structure of 2-carboxybenzaldehyde-2-phenylacetohydrazone, C16H14N2O3
- The crystal structure of poly[μ2-aqua-(μ2-2-naphthylamine-1-sulfonato-κ3O,O′:O′′)sodium(I)], C10H10N1O4S1Na
- The crystal structure of phthalazin-1(2H)-one, C8H6N2O1
- Crystal structure of 3,5-bis(trifluoromethyl)benzyl(Z)-N-(adamantan-1-yl)morpholine-4-carbothioimidate, C24H28F6N2OS
- Crystal structure of diazido-bis(μ2-pyridin-2-ylmethanolato-κ2N:O)-bis(pyridin-2-ylmethanolato-κ2N,O)dicobalt(III) – methanol (1/3), C27H35Co2N10O7
- Crystal structure of N-[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]-3-(2,2,2-trifluoroethoxy)-2-pyridinesulfonamide, C14H14F3N5O6S
- Crystal structure of 1-phenyl-N′-(1-phenyl-5-(thiophen-2-yl)-1H-pyrazole-3-carbonyl)-5-(thiophen-2-yl)-1H-pyrazole-3-carbohydrazide, C28H20N6O2S2
- The crystal structure of poly[bis(4-hydroxybenzoato-κO)-(μ2-4,4′-bipyridine-κ2N:N′)copper(II)] hydrate, C24H20N2O7Cu
- Crystal structure of poly[μ3-5-(4-(2,6-di(pyridine-2-yl)pyridine-4-yl)phenoxy)isophthalato-κ5O:O′,O′′:N,N′,N′′cobalt(II)], C29H17CoN3O5
- Crystal structure of poly[μ3-5-(4-(2,6-di(pyridine-2-yl)pyridine-4-yl)phenoxy)isophthalato-κ6O:O′,O′′:N,N′,N′′)cobalt(II)] C29H17CoN3O5
- Crystal structure of diaqua-(acetato-κ3O,O′:O′′)-(μ3-4,6-di(1H-imidazol-1-yl)isophthalato-κ4O:O′:O′′,O′′′)lanthanum(III), C16H15LaN4O8
- Synthesis and crystal structure of 6-carboxy-1-(3,5-dicarboxyphenyl)-1H-benzo[d]imidazol-3-ium-5-carboxylate dihydrate, C18H12N2O8
- Crystal structure of (E)-2-hydroxybenzaldehyde O-(2-(((E)-(4-(dimethylamino)benzylidene)amino)oxy)ethyl)oxime, C18H21N3O3
- Crystal structure of bis{2-((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O}zinc(II), C32H30N4O4Zn
- Crystal structure of bis(9-aminoacridin-10-ium) tetrachloridocuprate(II) monohydrate, C26H24Cl4CuN4O
- The crystal structure of 4-tert-butyl-N′-[(E)-(4-fluoro-3-methoxyphenyl)methylidene]benzohydrazide, C19H21F1N2O2
- Crystal structure of (E)-3-(3-(5-methyl-1-4-tolyl-1H-1,2,3-triazol-4-yl)-1-phenyl-1H-pyrazol-4-yl)-1-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl)prop-2-en-1-one, C31H26N8O
- Crystal structure of (E)-N′-(4-methoxybenzylidene)-5-methyl-1-(4-tolyl)-1H-1,2,3-triazole-4-carbohydrazide, C19H19N5O2
- Crystal structure and molecular packing of O-ethyl (2-chlorophenyl)carbamothioate, C9H10ClNOS
- Crystal structure of pyrene-2-carbaldehyde, C17H10O
- Crystal structure of (E)-2,4-diiodo-6-(4-methyl-2-nitrostyryl)phenol, C14H10I2N2O3
- Crystal structure of (E)-2,4-dichloro-6-(((4-methoxy-2-nitrophenyl)imino)methyl)phenol, C14H10Cl2N2O4
- Crystal structure of (E)-2-bromo-4-chloro-6-(4-methoxy-2-nitrostyryl)phenol, C14H10BrClN2O4
- Crystal structure of (E)-4,6-diiodo-2-(((4-methoxy-2-nitrophenyl)imino)methyl)-3-methylphenol, C14H10I2N2O4
- The crystal structure of 7-bromo-1-cyclopropyl-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid an intermediate of the ozenoxacin synthesis, C14H12BrNO3
- Crystal structure of bis(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)copper(II) C24H20N10O2Cu
- Crystal structure of diaqua-dinitrato-k2O,O′((Z)-N-((E)-1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-k3N,N′,O)europium(II), C12H14N7O9Eu
- Crystal structure of ethyl 4-amino-5-(5-methyl-1-(4-tolyl)-1H-1,2,3-triazole-4-carbonyl)-2-(phenylamino)thiophene-3-carboxylate, C24H23N5O3S
- The crystal structure of acridin-10-ium2-carboxybenzoate, C21H15NO4
- The crystal structure of 3-((phenylamino)methylene)-1,5-dioxaspiro[5.5]undecane-2,4-dione, C16H17N1O4
- Crystal structure of 12-chloro-5,6,7,12-tetrahydrodibenzo[c,f][1,5]oxastibocine, C14H12ClOSb
- Crystal structure of 4-((1,3-dioxoisoindolin-2-yl)methyl)phenethyl 4-methylbenzenesulfonate, C24H21NO5S
- Crystal structure of 3-methyl-2,3-dihydro-2-thioxoquinazolin-4(1H)-one, C9H8N2OS
- Crystal structure of tert-butyl (2-(4-oxo-2-thioxo-1,4-dihydroquinazolin-3(2H)-yl)ethyl)carbamate, C15H19N3O3S
- Crystal structure of ethyl 5-formyl-3,4-dimethylpyrrole-2-carboxylate–1-(propan-2-ylidene)thiosemicarbazide (1/1), C14H22N4O3S
- Crystal structure of bis-(N′-(5-ethoxycarbonyl-3,4-dimethyl-pyrrol-2-yl-methylidene)-3-hydroxybenzohydrazide-κ2O,N)copper(II) – dimethylformamide (1/2), C40H50N8O10Cu
- Crystal structure of bis(acetato-κO)bis{2-((1H-tetrazol-1-yl)methyl)-1H-benzo[d]imidazole-κN}zinc(II), C22H22N12O4Zn
- Crystal structure of 4-phenyl-3-((4-phenyl-1H-1,2,3-triazol-1-yl)methyl)-1H-1,2,4-triazole-5(4H)-thione, C17H14N6S
- Crystal structure of (Z)-N-(4-nitrophenyl)-3-phenyl-3-(phenylamino)acrylamide, C21H17N3O3
- Crystal structure of 1,1′-(pentane-1,5-diyl)bis(3-methyl-1H-imidazol-3-ium)bis(hexafluorophosphate), C13H22F12N4P2
- Synthesis and crystal structure of bis(furan-2-ylmethanaminium)-catena-[bis(μ2-phthalato-κ2O:O′)cobalt(II)], C26H24CoN2O10
- Crystal structure of methyl (R)-4-(o-chlorobenzoyl)-1-thia-4-azaspiro[4.5]decane-3-carboxylate, C17H20ClNO3S
- Crystal structure of 2-[[4-[2-[4-(4-methoxyphenyl)-1-piperazinyl]ethyl]phenyl] methyl]-1H-isoindole-1,3(2H)-dione, C28H29N3O3
- The crystal structure of benzenaminium 5,7-dihydroxy-4-oxo-2-phenyl-4H-chromene-8-sulfonate hydrate, C21H19NO8S
- Crystal structure of semiconducting potassium poly[(μ2-tetraselenido-κ2Se1:Se4)(μ2-pentaselenido-κ1Se1:Se1)argentate(I)], K3AgSe9
- Crystal structure of 2-isopropyl-8-methyl-phenanthrene-3,4-dione, C18H16O2
- Crystal structure of 2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydrophenanthrene-3,4-dione, C19H22O2
- Crystal structure of (E)-2-(1-((2-aminophenyl)imino)ethyl)-4-bromophenol, C14H13BrN2O
- Crystal structure of 1,1-di(4-cyanophenyl)-2,2-diphenylethene, C28H18N2
- Crystal structure of bis(hydroxylamido-κ2O,N)-oxido(1H-pyrazole-3-carboxylato-κ2O,N)vanadium(V), C4H7N4O5V
- The crystal structure of In1.2B3O5.6(OH)1.4
- The crystal structure of chlorido(2-(1H-pyrazol-3-yl)phenolato-κ2N,O)(2-(1H-pyrazol-3-yl)phenol-κN)copper(II), C18H15ClCuN4O2
- Crystal structure of 1-heptylpyridazin-1-ium iodide, C11H19N2I
- The crystal structure of N-butylpyridinium bis(μ2-dichlorido)-tetrachloridodicopper(II), C18H28N2Cu2Cl6
- Crystal structure of 6-hydroxy-5-((2-hydroxy-6-oxocyclohex-1-en-1-yl)(4-methoxyphenyl)methyl)-1,3-dimethylpyrimidine-2,4(1H,3H)-dione, C20H22N2O6
- Crystal structure of bis(acetonitrile)-diaqua-dichloridoiron(II), C4H10Cl2N2O2Fe
Artikel in diesem Heft
- Cover and Frontmatter
- Crystal structure of (E)-1-(4-(((E)-2-hydroxy-5-methylbenzylidene)amino)phenyl)ethan-1-one O-methyl oxime, C17H18N2O2
- Crystal structure of 1,3,5,7-tetraazaadamantane-1,3-diium 2,5-dicarboxyterephthalate, C16H18N4O8
- Crystal structure of guanidinium tetrabutyl-ammonium 5-hydroxyisophthalate dihydrate, C25H50N4O7
- Crystal structure of poly[aqua-(μ2-5-methoxyisophthalate-κ3O,O′:O′′)-(μ2-1,4-bis((1H-1,2,4-triazol-1-yl)methyl)benzene-κ2N:N′)nickel(II), NiC21H20N6O6
- Crystal structure of aqua-bis(3,4-dimethoxybenzoato-κ1O)-(2,2′-bipyridine-κ2N,N′)copper(II), C28H26CuN2O9
- Crystal structure of catena-poly[aqua-(μ2-(3,5-di(1H-imidazol-1-yl)-pyridine-κ2N:N′)-(μ2-2-(carboxylatomethyl)benzoato-κ2O:O′)] cadmium(II), C20H17CdN5O5
- The crystal structure of catena-poly[chlorido-(μ2-5-methyl-1,3,4-thiadiazole-2-thiolato-κ2S:N)mercury(II)], C3H3ClHgN2S2
- Crystal structure of (E)-2,4-dichloro-6-(((4-methyl-2-nitrophenyl)imino)methyl)phenol, C14H10Cl2N2O3
- Crystal structure of a new polymorph of bis[μ-1,3-bis(diphenylphosphino)propane-κ2P:P′-disilver(I)] bis(tetrafluoroborate), [Ag(dppp)]2(BF4)2, C54H52Ag2B2F8P4
- The crystal structure of 2-phenyl-4,6-bis(R-tert-butylsulfonamido)-1,3,5-triazine – ethyl acetate (2/1), C38H58N10O6S4
- Crystal structure of 6-amino-8-(2-methoxy-phenyl)-2-methyl-2,3,8,8a-tetrahydro-1H-iso-quinoline-5,7,7-tricarbonitrile monohydrate, C20H21N5O2
- Crystal structure of methyl (1-phenylethyl)carbamate, C10H13NO2
- Crystal structure of dimethanol-(μ2-squarato-κ2O:O′)-tetrakis(tri-p-tolylphosphane-κP)disilver(I) – methanol (1/2), C92H98Ag2O8P4
- Crystal structure of catena-poly[bis(μ2-1,4-bis(triazol-1-ylmethyl)benzene-κ2N:N′)-bis(5-tert-butyl-isophthalate-κO)copper(II)]tetrahydrate, C36H46CuN6O12
- Crystal structure of 4-aminopyridinium 4-acetyl-(pyridin-4-yl)-1H-1,2,3-triazol-5-olate monohydrate, C14H16N6O3
- Crystal structure of 2-(8-bromo-2-phenylimidazo[1,2-α]pyridin-3-yl)-6,7-dimethyl-3-phenylquinoxaline, C29H21BrN4
- Crystal structure of aqua(1-(2-pyridyl)ethanone oxime-κ2N,N′)(1-(2-pyridyl)ethanone oximato-κ2N,N′) nitrate monohydrate, C14H19N5O7Cu
- Crystal structure of poly[tetraaqua-(μ4-oxalato-κ4O,O′:O′′,O′′′)-(μ8-benzene-1,2,4,5-tetracarboxylato-κ8O1:O2:O3:O4:O5:O6:O7:O8)yttrium(III)], C6H5O8Y
- Crystal structure of bis{catena-poly[(μ2-1,2-bis(4-pyridyl)ethane-κ2N:N′)silver(I)]} diaqua-bis(5-(4-carboxyphenyl)pyridine-2-carboxylato-κ2N,O)-(μ2-1,2-bis(4-pyridyl)ethane-κ2N:N′)disilver(I) octahydrate, C31H35Ag2N4O9
- Crystal structure of (E)-N-(2-(benzylamino)-2-oxo-1-(4-oxo-4H-chromen-3-yl)ethyl)-N-(4-bromophenyl)-3-chloroacrylamide hydrate, C27H22BrClN2O5
- Crystal structure of catena-poly[octaaqua-bis(μ2-4,6-dicarboxyisophthalate-κ2O:O′)cadmium(II)disodium(I)] dihydrate, C20H28CdNa2O26
- Crystal structure of acetonitrile{bis(2-benzimidazolylmethyl)amine-κ3N,N′,N′′}-{maleato-κO}zinc(II) perchlorate - acetonitrile (1/1), C24H24ClN7O8Zn
- Crystal structure of 2-amino-4-(3,5-dibromo-4-hydroxyphenyl)-7-methyl-5-oxo-2H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C16H10Br2N2O4
- Crystal structure of catena-poly[diaqua-(μ2-3,5-bis(pyridin-4-ylmethoxy)benzoate-κ2N:O) manganese(II)] tetrahydrate [(3,5-bis-(pyridin-4-ylmethoxy)-benzoic-κ1Oκ1N) manganese(II)] trihydrate, C38H42MnN4O14
- The crystal structure of 2-carboxybenzaldehyde-2-phenylacetohydrazone, C16H14N2O3
- The crystal structure of poly[μ2-aqua-(μ2-2-naphthylamine-1-sulfonato-κ3O,O′:O′′)sodium(I)], C10H10N1O4S1Na
- The crystal structure of phthalazin-1(2H)-one, C8H6N2O1
- Crystal structure of 3,5-bis(trifluoromethyl)benzyl(Z)-N-(adamantan-1-yl)morpholine-4-carbothioimidate, C24H28F6N2OS
- Crystal structure of diazido-bis(μ2-pyridin-2-ylmethanolato-κ2N:O)-bis(pyridin-2-ylmethanolato-κ2N,O)dicobalt(III) – methanol (1/3), C27H35Co2N10O7
- Crystal structure of N-[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]-3-(2,2,2-trifluoroethoxy)-2-pyridinesulfonamide, C14H14F3N5O6S
- Crystal structure of 1-phenyl-N′-(1-phenyl-5-(thiophen-2-yl)-1H-pyrazole-3-carbonyl)-5-(thiophen-2-yl)-1H-pyrazole-3-carbohydrazide, C28H20N6O2S2
- The crystal structure of poly[bis(4-hydroxybenzoato-κO)-(μ2-4,4′-bipyridine-κ2N:N′)copper(II)] hydrate, C24H20N2O7Cu
- Crystal structure of poly[μ3-5-(4-(2,6-di(pyridine-2-yl)pyridine-4-yl)phenoxy)isophthalato-κ5O:O′,O′′:N,N′,N′′cobalt(II)], C29H17CoN3O5
- Crystal structure of poly[μ3-5-(4-(2,6-di(pyridine-2-yl)pyridine-4-yl)phenoxy)isophthalato-κ6O:O′,O′′:N,N′,N′′)cobalt(II)] C29H17CoN3O5
- Crystal structure of diaqua-(acetato-κ3O,O′:O′′)-(μ3-4,6-di(1H-imidazol-1-yl)isophthalato-κ4O:O′:O′′,O′′′)lanthanum(III), C16H15LaN4O8
- Synthesis and crystal structure of 6-carboxy-1-(3,5-dicarboxyphenyl)-1H-benzo[d]imidazol-3-ium-5-carboxylate dihydrate, C18H12N2O8
- Crystal structure of (E)-2-hydroxybenzaldehyde O-(2-(((E)-(4-(dimethylamino)benzylidene)amino)oxy)ethyl)oxime, C18H21N3O3
- Crystal structure of bis{2-((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O}zinc(II), C32H30N4O4Zn
- Crystal structure of bis(9-aminoacridin-10-ium) tetrachloridocuprate(II) monohydrate, C26H24Cl4CuN4O
- The crystal structure of 4-tert-butyl-N′-[(E)-(4-fluoro-3-methoxyphenyl)methylidene]benzohydrazide, C19H21F1N2O2
- Crystal structure of (E)-3-(3-(5-methyl-1-4-tolyl-1H-1,2,3-triazol-4-yl)-1-phenyl-1H-pyrazol-4-yl)-1-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl)prop-2-en-1-one, C31H26N8O
- Crystal structure of (E)-N′-(4-methoxybenzylidene)-5-methyl-1-(4-tolyl)-1H-1,2,3-triazole-4-carbohydrazide, C19H19N5O2
- Crystal structure and molecular packing of O-ethyl (2-chlorophenyl)carbamothioate, C9H10ClNOS
- Crystal structure of pyrene-2-carbaldehyde, C17H10O
- Crystal structure of (E)-2,4-diiodo-6-(4-methyl-2-nitrostyryl)phenol, C14H10I2N2O3
- Crystal structure of (E)-2,4-dichloro-6-(((4-methoxy-2-nitrophenyl)imino)methyl)phenol, C14H10Cl2N2O4
- Crystal structure of (E)-2-bromo-4-chloro-6-(4-methoxy-2-nitrostyryl)phenol, C14H10BrClN2O4
- Crystal structure of (E)-4,6-diiodo-2-(((4-methoxy-2-nitrophenyl)imino)methyl)-3-methylphenol, C14H10I2N2O4
- The crystal structure of 7-bromo-1-cyclopropyl-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid an intermediate of the ozenoxacin synthesis, C14H12BrNO3
- Crystal structure of bis(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)copper(II) C24H20N10O2Cu
- Crystal structure of diaqua-dinitrato-k2O,O′((Z)-N-((E)-1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-k3N,N′,O)europium(II), C12H14N7O9Eu
- Crystal structure of ethyl 4-amino-5-(5-methyl-1-(4-tolyl)-1H-1,2,3-triazole-4-carbonyl)-2-(phenylamino)thiophene-3-carboxylate, C24H23N5O3S
- The crystal structure of acridin-10-ium2-carboxybenzoate, C21H15NO4
- The crystal structure of 3-((phenylamino)methylene)-1,5-dioxaspiro[5.5]undecane-2,4-dione, C16H17N1O4
- Crystal structure of 12-chloro-5,6,7,12-tetrahydrodibenzo[c,f][1,5]oxastibocine, C14H12ClOSb
- Crystal structure of 4-((1,3-dioxoisoindolin-2-yl)methyl)phenethyl 4-methylbenzenesulfonate, C24H21NO5S
- Crystal structure of 3-methyl-2,3-dihydro-2-thioxoquinazolin-4(1H)-one, C9H8N2OS
- Crystal structure of tert-butyl (2-(4-oxo-2-thioxo-1,4-dihydroquinazolin-3(2H)-yl)ethyl)carbamate, C15H19N3O3S
- Crystal structure of ethyl 5-formyl-3,4-dimethylpyrrole-2-carboxylate–1-(propan-2-ylidene)thiosemicarbazide (1/1), C14H22N4O3S
- Crystal structure of bis-(N′-(5-ethoxycarbonyl-3,4-dimethyl-pyrrol-2-yl-methylidene)-3-hydroxybenzohydrazide-κ2O,N)copper(II) – dimethylformamide (1/2), C40H50N8O10Cu
- Crystal structure of bis(acetato-κO)bis{2-((1H-tetrazol-1-yl)methyl)-1H-benzo[d]imidazole-κN}zinc(II), C22H22N12O4Zn
- Crystal structure of 4-phenyl-3-((4-phenyl-1H-1,2,3-triazol-1-yl)methyl)-1H-1,2,4-triazole-5(4H)-thione, C17H14N6S
- Crystal structure of (Z)-N-(4-nitrophenyl)-3-phenyl-3-(phenylamino)acrylamide, C21H17N3O3
- Crystal structure of 1,1′-(pentane-1,5-diyl)bis(3-methyl-1H-imidazol-3-ium)bis(hexafluorophosphate), C13H22F12N4P2
- Synthesis and crystal structure of bis(furan-2-ylmethanaminium)-catena-[bis(μ2-phthalato-κ2O:O′)cobalt(II)], C26H24CoN2O10
- Crystal structure of methyl (R)-4-(o-chlorobenzoyl)-1-thia-4-azaspiro[4.5]decane-3-carboxylate, C17H20ClNO3S
- Crystal structure of 2-[[4-[2-[4-(4-methoxyphenyl)-1-piperazinyl]ethyl]phenyl] methyl]-1H-isoindole-1,3(2H)-dione, C28H29N3O3
- The crystal structure of benzenaminium 5,7-dihydroxy-4-oxo-2-phenyl-4H-chromene-8-sulfonate hydrate, C21H19NO8S
- Crystal structure of semiconducting potassium poly[(μ2-tetraselenido-κ2Se1:Se4)(μ2-pentaselenido-κ1Se1:Se1)argentate(I)], K3AgSe9
- Crystal structure of 2-isopropyl-8-methyl-phenanthrene-3,4-dione, C18H16O2
- Crystal structure of 2-isopropyl-8,8-dimethyl-5,6,7,8-tetrahydrophenanthrene-3,4-dione, C19H22O2
- Crystal structure of (E)-2-(1-((2-aminophenyl)imino)ethyl)-4-bromophenol, C14H13BrN2O
- Crystal structure of 1,1-di(4-cyanophenyl)-2,2-diphenylethene, C28H18N2
- Crystal structure of bis(hydroxylamido-κ2O,N)-oxido(1H-pyrazole-3-carboxylato-κ2O,N)vanadium(V), C4H7N4O5V
- The crystal structure of In1.2B3O5.6(OH)1.4
- The crystal structure of chlorido(2-(1H-pyrazol-3-yl)phenolato-κ2N,O)(2-(1H-pyrazol-3-yl)phenol-κN)copper(II), C18H15ClCuN4O2
- Crystal structure of 1-heptylpyridazin-1-ium iodide, C11H19N2I
- The crystal structure of N-butylpyridinium bis(μ2-dichlorido)-tetrachloridodicopper(II), C18H28N2Cu2Cl6
- Crystal structure of 6-hydroxy-5-((2-hydroxy-6-oxocyclohex-1-en-1-yl)(4-methoxyphenyl)methyl)-1,3-dimethylpyrimidine-2,4(1H,3H)-dione, C20H22N2O6
- Crystal structure of bis(acetonitrile)-diaqua-dichloridoiron(II), C4H10Cl2N2O2Fe