Abstract
C19H18N2O6, monoclinic, P21/c (no. 14), a = 13.052(8) Å, b = 10.091(6) Å, c = 14.454(9) Å, β = 114.446(11)°, V = 1733.0(19) Å3, Z = 4, Rgt(F) = 0.0490, wRref(F2) = 0.1518, T = 296(2) K.

The 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: | 0.26 × 0.21 × 0.15 mm |
| Wavelength: | Mo Kα radiation (0.71073 Å) |
| μ: | 0.11 mm−1 |
| Diffractometer, scan mode: | Bruker APEX-II, φ and ω-scans |
| θmax, completeness: | 25°, >99% |
| N(hkl)measured, N(hkl)unique, Rint: | 8487, 3041, 0.046 |
| Criterion for Iobs, N(hkl)gt: | Iobs > 2 σ(Iobs), 2083 |
| N(param)refined: | 245 |
| Programs: | Bruker programs [1], SHELX [2, 3] , OLEX2 [4] |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).
| Atom | x | y | z | Uiso*/Ueq |
|---|---|---|---|---|
| O1 | 0.07794(13) | 0.62356(15) | 0.66102(12) | 0.0482(5) |
| O2 | 0.07846(13) | 0.74641(16) | 0.50112(11) | 0.0511(5) |
| O3 | 0.20953(14) | 0.95803(17) | 0.51976(12) | 0.0549(5) |
| O4 | 0.29142(12) | 0.91682(15) | 1.07149(11) | 0.0426(4) |
| O5 | 0.54182(13) | 0.70363(17) | 1.04858(13) | 0.0536(5) |
| O6 | 0.51258(15) | 0.7891(2) | 0.89905(14) | 0.0647(6) |
| N1 | 0.1548(2) | 1.2354(2) | 0.80994(18) | 0.0689(7) |
| N2 | 0.15421(17) | 1.0640(2) | 1.02712(15) | 0.0528(6) |
| H2A | 0.111785 | 1.126552 | 0.990864 | 0.063* |
| H2B | 0.147108 | 1.036796 | 1.080554 | 0.063* |
| C1 | 0.0811(2) | 0.5490(3) | 0.74526(19) | 0.0581(7) |
| H1A | 0.032470 | 0.473498 | 0.721429 | 0.087* |
| H1B | 0.156752 | 0.519646 | 0.784835 | 0.087* |
| H1C | 0.056375 | 0.603344 | 0.786571 | 0.087* |
| C2 | 0.14261(18) | 0.7354(2) | 0.68065(17) | 0.0371(6) |
| C3 | 0.14185(18) | 0.7982(2) | 0.59557(16) | 0.0389(6) |
| C4 | −0.0175(2) | 0.8244(3) | 0.4445(2) | 0.0626(8) |
| H4A | −0.058673 | 0.784011 | 0.379407 | 0.094* |
| H4B | −0.064701 | 0.830260 | 0.480578 | 0.094* |
| H4C | 0.006005 | 0.911625 | 0.435180 | 0.094* |
| C5 | 0.20973(18) | 0.9080(2) | 0.60686(16) | 0.0403(6) |
| C6 | 0.2868(2) | 1.0616(3) | 0.5288(2) | 0.0636(8) |
| H6A | 0.278490 | 1.088305 | 0.462299 | 0.095* |
| H6B | 0.271873 | 1.135721 | 0.562968 | 0.095* |
| H6C | 0.362180 | 1.030683 | 0.567140 | 0.095* |
| C7 | 0.27312(17) | 0.9567(2) | 0.70329(16) | 0.0395(6) |
| H7 | 0.318132 | 1.031006 | 0.711375 | 0.047* |
| C8 | 0.27008(17) | 0.8959(2) | 0.78732(16) | 0.0358(5) |
| C9 | 0.20601(18) | 0.7840(2) | 0.77693(17) | 0.0389(6) |
| H9 | 0.205381 | 0.741761 | 0.833860 | 0.047* |
| C10 | 0.48324(19) | 0.7879(2) | 0.96785(19) | 0.0454(6) |
| C11 | 0.39532(17) | 0.8643(2) | 0.97471(16) | 0.0370(6) |
| C12 | 0.25409(18) | 1.0380(2) | 0.92081(17) | 0.0374(6) |
| C13 | 0.1978(2) | 1.1457(2) | 0.85876(18) | 0.0460(6) |
| C14 | 0.23108(18) | 1.0091(2) | 1.00046(17) | 0.0393(6) |
| C15 | 0.37471(17) | 0.8509(2) | 1.05793(16) | 0.0367(6) |
| C16 | 0.43902(18) | 0.7670(2) | 1.13985(18) | 0.0432(6) |
| H16 | 0.424258 | 0.762000 | 1.197426 | 0.052* |
| C17 | 0.5198(2) | 0.6965(2) | 1.13289(19) | 0.0481(6) |
| C18 | 0.5964(2) | 0.6030(3) | 1.2090(2) | 0.0699(9) |
| H18A | 0.647405 | 0.565111 | 1.183892 | 0.105* |
| H18B | 0.638312 | 0.649445 | 1.271275 | 0.105* |
| H18C | 0.553089 | 0.533740 | 1.221261 | 0.105* |
| C19 | 0.33355(17) | 0.9592(2) | 0.89078(16) | 0.0370(6) |
| H19 | 0.388731 | 1.020886 | 0.885187 | 0.044* |
Source of material
The title compound was synthesized according to a reported procedure. A mixture of 4-hydroxy-6-methylpyran-2-one (10 mmol), 3,4,5-trimethoxybenzaldehyde (10 mmol), malononitrile (10 mmol) and 4-(dimethylamino)pyridine (DMAP) (1 mmol) in ethanol (100 mL) was refluxed for 2−3 h and then cooled to room temperature. After filtering the precipitates, they were sequentially washed with ice-cooled water and ethanol and then dried under reduced pressure.
Experimental details
H atoms bonded to C and N atoms were positioned geometrically and refined using a riding model, with C—H = 0.96 Å with Uiso(H) = 1.2 times Ueq(C).
Discussion
Pyran derivatives may possess several types of pharmacological properties such as anticancer, anti-HIV, anticoagulant, spasmolytic, and antibacterial activity [5]. A large number of structurally novel pyran derivatives have been reported to show substantial cytotoxic activity in vitro and in vivo [6]. Research focused on the synthesis of the dihydropyran derivatives [7]. Herein, we reported the structure of a new pyran derivative.
In the crystal structure of the title compound (cf. the figure), one methoxy group is connected to 4H,5H-pyrano[4,3-b]pyran-5-one unit at the 7-position. One cyano group and one amino group are linked to the 2 and 4-position of this system, respectively. Three methoxy groups are connected to C13, C15 and C17 atoms respectively. Above mentioned bond lengths fall in their normal ranges compared with those in previously studies [8], [9].
Acknowledgements
This work was supported by the Scientific Research Program Funded by Shaanxi Provincial Education Department (Program No. 16JK1187) and Shaanxi Xueqian Normal University (Program No. 2014YBKJ030).
References
Bruker: APEX3, SAINT-Plus, XPREP. Bruker AXS Inc., Madison, Wisconsin, USA (2016).Search in Google Scholar
Sheldrick, G. M.: SHELXT − Integrated space-group and crystal-structure determination. Acta Crystallogr. A71 (2015) 3–8.10.1107/S2053273314026370Search in Google Scholar PubMed PubMed Central
Sheldrick, G. M.: Crystal structure refinement with SHELXL. Acta Crystallogr. C71 (2015) 3–8.10.1107/S2053229614024218Search in Google Scholar PubMed PubMed Central
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. Cryst. 42 (2009) 339–341.10.1107/S0021889808042726Search in Google Scholar
Li, J.; Sui, Y.; Xin, J.; Du, X. L.; Li, J. T.; Huo, H. R.; Ma, H.; Wang, W. H.; Zhou, H. Y.; Zhan, H. D.; Wang, Z. J.; Li, C.; Sui, F; Li, X.: Synthesis of biscoumarin and dihydropyran derivatives with promising antitumor and antibacterial activities. Bioorg. Med. Chem. Lett. 25 (2015) 5520–5523.10.1016/j.bmcl.2015.10.063Search in Google Scholar PubMed
Khan, K. M.; Iqbal, S.; Lodhi, M. A; Maharvi, G. M.; Ullah, Z.; Choudhary, M. I.; Rahman, A. U.; Perveen, S.: Biscoumarin: New class of urease inhibitors; economical synthesis and activity. Bioorg. Med. Chem. 12 (2004) 1963–1968.10.1016/j.bmc.2004.01.010Search in Google Scholar PubMed
Khan, A. T.; Lal, M.; Ali, S.; Musawwer, K.: One-pot three-component reaction for the synthesis of pyran annulated heterocyclic compounds using DMAP as a catalyst. Tetrahedron Lett. 52 (2011) 5327–5332.10.1016/j.tetlet.2011.08.019Search in Google Scholar
Li, J.; Lv, C.-W.; Li, X.-J.; Qu, D.; Hou, Z.; Jia, M.; Luo, X. X.; Li, X.; Li, M. K.: Synthesis of biscoumarin and dihydropyran derivatives and evaluation of their antibacterial activity. Molecules. 20 (2015) 17469–17482.10.3390/molecules200917469Search in Google Scholar PubMed PubMed Central
Song, J.: Crystal structure of 2-amino-7-methyl-5-oxo-4-phenyl-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C16H12N2O3. Z. Kristallogr. NCS 231 (2016) 747–748.10.1515/ncrs-2015-0255Search in Google Scholar
©2018 Jing He, published by De Gruyter, Berlin/Boston
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
Articles in the same Issue
- Cover and Frontmatter
- Crystal structure of 2-amino-4-(2,4-dinitrophenyl)-3-cyano-7,7-dimethyl-5-oxo-4H-5,6,7,8-tetrahydrobenzo-pyran, C18H16N4O6
- Crystal structure of catena-poly[(μ3-5-carboxy-2-(pyridin-4-yl)benzoato-κ5O,O′:O′′,O′′′:O′′′)(1,10-phenanthroline-κ2N,N′)cadmium(II)], C100H60N12O16Cd4
- Crystal structure of 2-amino-4-(3,4,5-trimethoxy-phenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C19H18N2O6
- Crystal structure of 1-{4-[(2-hydroxy-5-methyl benzylidene)amino]phenyl}ethanone O-ethyl-oxime, C18H20N2O2
- Crystal structure of bis{4-methyl-2-((E)-((4-((E)-1-(ethoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O)}copper(II), C36H38CuN4O4
- Crystal structure of bis{5-methoxy-2-((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O}nickel(II), C34H34N4NiO6
- Crystal structure of poly[μ8-3-carboxyphthalat-κ8-O:O1,O1,O1:O2:O3,O3:O4)silver(I)], C9H4Ag2O6
- Crystal structure of 2-((E)-((4-((E)-1-(hydroxyimino)ethyl)phenyl)iminio)methyl)-5-methoxyphenolate, C16H16N2O3
- Crystal structure of (E)-1-(4-(((E)-2-hydroxy-3-methoxybenzylidene)amino)phenyl)ethan-1-one oxime, C16H16N2O3
- The crystal structure of 2-(tert-butyl)-4-chloro-6-phenyl-1,3,5-triazine, C13H14Cl1N3
- Crystal structure of (6,6′-(((((2-aminoethyl)azanediyl)bis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene))bis(2,4-dichlorophenolato)-κ6N,N′,N′′,N′′′,O,O′)cadmium(II) – ethanol – water (1/1/1), C22H28CdCl4N4O4
- Crystal structure of 6-chloro-N-methylpyrimidin-4-amine, C5H6ClN3
- Synthesis and crystal structure of bis{((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)-2-naphtholato-κ2N,O}nickel(II), C40H34N4NiO4
- Crystal structure of (E)-2-(4-bromophenyl)ethenesulfonyl fluoride (C8H6BrFO2S)
- Synthesis and crystal structure of 2,2′-ethylenedioxybis(benzimide)-2,2′-bis[O-(1-propyloxyamide)]oxime-4,4′,6,6′-tetrachlorodiphenol, C36H34Cl4N4O8
- Crystal structure of bis(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)cadmium(II) – methanol (1/1), C26H28N10O4Zn
- Crystal structure of diaqua-(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)-bis(nitrato-κ2O,O′)samarium(III), C12H14N7O9Sm
- Crystal structure of hexaaqua-{(E)-N′-(1-(pyrazin-2-yl)ethylidene)isonicotinohydrazide-κ3N,N′,O}praseodym(III) trichloride monohydrate, C12H25Cl3N5O8Pr
- Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3
- Crystal structure of ethyl 2-amino-4-(2-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
- Crystal structure of 2,12-dibromo-5,15-dihexyl-5,15-dihydrobenzo [1,2-b:5,6-c′]dicarbazole, C38H38Br2N2
- Crystal structure of ethyl 2-amino-4-(3-hydroxy-4-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO7
- Crystal structure of ethyl 2-amino-4-(3,4-dimethylphenyl)-5-oxo-4H,5H-pyrano[3,2-c] chromene-3-carboxylate, C23H21NO5
- Crystal structure of 2-hydroxy-N′-(pyrimidin-2-yl)benzohydrazide, C11H10N4O2
- Crystal structure of 2-(3,4-dimethylphenyl)-1,8-naphthyridine, C16H14N2
- Crystal structure of ethyl 4-(3,4-dimethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C23H29NO3
- Crystal structure of ethyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C22H24N2O3
- Crystal structure of 7β,9β-dihydroxy-15-oxo-ent-kauran-16-en-19,6β-olide, C20H26O5
- Crystal structure of Ent-7β,20-epoxy-kaur-16-en-1β,6α,7α,14α,15α-pentaol-20-one, C20H30O8
- Crystal structure of 1,4-bis(benzo[d][1,3]dioxol-5-ylmethyl)dihydro-1H,3H-furo[3,4-c]furan-3a(4H)-yl acetate, C22H20O8
- Crystal structure of methyl 2-((4-((2-nitrophenoxy)methyl)-1H-1,2,3-triazol-1-yl)methyl) benzoate, C18H16N4O5
- Crystal structure of diaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O)zinc(II), C12H14N4O10Zn
- Hydrothemal synthesis and crystal structure of triaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O;κ1O)manganese(II), C12H16N4O11Mn
- Redetermination of methyl 4-(4-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C20H22ClNO3
- Crystal structure of bis{1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-methyl-imdazol)-κN}-dithiocyano-κN-zinc(II) C24H22N12S2Zn
- Crystal structure of (5-fluoro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl furan-2-carboxylate, C10H7FN2O5
- Crystal structure of bis(η6-cymene)-tri-μ2-chlorido-ruthenium(II) tetrafluoroborate, C20H28BCl3F4Ru2
- Crystal structure of 3,6-diphenyl-7H-[1,2,4]-triazolo[3,4-b][1,3,4]thiadiazine, C16H12N4S
- Synthesis and crystal structure of 1,3-bis[(3,4-dicyano)phenoxy]-4,6-dinitro-benzene, C22H8N6O6
- Crystal structure of ethyl 2-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano [4,3-b]pyran-3-carboxylate, C18H15Cl2NO5
- Crystal structure of poly[μ3-hydroxy-(μ5-(5-(2-carboxylatophenoxy)isophthalato-κ6O1:O2:O3:O4:O5,O6)-(μ2-1,4-di(1H-imidazol-1-yl)butane-κ2N:N′)dicobalt(II)] hemihydrate, C25H22Co2N4O8.5
- Crystal structure of methyl 4-(4-bromophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C20H22BrNO3
- Crystal structure of 9,10-dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium 5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-olate trihydrate, C35H33NO12
- Crystal structure of 2,5-bis(4-(10H-phenothiazin-10-yl)phenyl)-1,3,4-oxadiazole, C38H24N4OS2
- The crystal structure of (E)-2-(4-hydroxyphenyl)-5-(prop-1-en-1-yl)benzofuran-3-carbaldehyde, C18H14O3
- Crystal structure of bis{5H-dibenzo[c,f][1,5]oxabismocin-12(7H)-yl} carbonate, C29H24O5Bi2
- Crystal structure of ethyl-5-formyl-3,4-dimethylpyrrole-2-carboxylate — N-(5-ethoxycarbonyl-3,4-dimethylpyrrole)-2-methylene-5-nitrobenzene-1,2-diamine (1:1), C26H31N5O7
- Crystal structure of (E)-2-(1-((2-aminophenyl)imino)ethyl)-6-bromo-4-chlorophenol, C14H12BrClN2O
- Crystal structure of (Z)-2-(4-chlorophenyl)-4-(furan-2-yl(phenylamino)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one, C21H16ClN3O2
- Crystal structure of N2,N4-dibutyl-6-chloro-N2,N4-bis(1,2,2,6,6-pentamethylpiperidin-4-yl)-1,3,5-triazine-2,4-diamine, C31H58ClN7 – Important intermediate of Chimassorb 119 synthesis
- Crystal structure of 1-(5-bromo-2-(4-methoxyphenyl)-1H-indol-7-yl)ethanone oxime, C17H15BrN2O2
- Crystal structure of poly-{diaqua-bis[(μ2-3-nitrobenzenesulfonylglycine-κ3N:O:O′)(4,4′-bipyridine)manganese(II)]}-dimethylformamide (1/1), C39H35Mn2N9O15S2
- Crystal structure of 4-(dimethylamino)-1-(prop-2-yn-1-yl)pyridin-1-ium perchlorate, C10H13ClN2O4
- Crystal structure of 2-amino-5-oxo-4-(4-chloro-phenyl)-4,5,6,7-tetrahydro-cyclopenta[b]pyran-3-carbonitrile, C15H11ClN2O2
- Crystal structure of triaqua-(pyridine-2,6-dicarboxylato-κ3O,N,O′)cobalt(II) – 6-phenyl-1,3,5-triazine-2,4-diamine (1/1), C16H18CoN6O7
- Crystal structure of ethyl 2-amino-4-(3-cyanophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C21H22N2O4
- Crystal structure of 2-(4-chloro-2,6-dinitrophenyl)-1-(4-chloro-3-nitrophenyl)diazene 1-oxide, C12H5Cl2N5O7
- Crystal structure of 3,4-dimethyl-2,6-dinitrophenol, C8H8N2O5
- Crystal structure of 1,2-dimethyl-3,5-dinitrobenzene, C8H8N2O4
- Crystal structure of ethyl 4-(3-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C21H24ClNO3
- Crystal structure of N-(4-chlorophenyl)-2-(2,6-dichlorophenyl)acetamide, C14H10Cl3NO
- Crystal structure of 2-amino-4-(4-fluorophenyl)-3-cyano-5-oxo-4H,5H-pyrano[3,2c] chromene, C19H11FN2O3
- The crystal structure of (4-nitrophenyl) (5-ferrocenyl-3-(trifluoromethyl)-1H-pyrazol-1-yl) methanone, C21H12F3FeN3O3
- Crystal structure of 5,5′-((3-hydroxy-4-methoxyphenyl)methylene)bis(1,3-diethyl-6-hydroxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one), C24H30N4O6S2
- Crystal structure of (3aR,4R,5R,7R,8S,9R,9aS,12R)-7-ethyl-5-(1-hydroxy-2-((R)-3-hydroxypyrrolidin-1-yl)ethoxy)-4,7,9,12-tetramethyldecahydro-4,9a-propanocyclopenta[8]annulene-3,8-diol – a pleuromutilin derivative, C26H41NO5
- Crystal structure of bis(μ2-3-formyl-5-methoxy-2-oxidobenzoato-κ3O,O′:O′)-hexapyridine-dicadmium(II) – pyridine (1/1), C53H47Cd2N7O10
- Crystal structure of ethyl 2-amino-4-(3-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
- Crystal structure of methyl 4-(3,5-ditrifluoromethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate — water (2/1), C22H21F6NO3
- Crystal structure of 2-(4-bromophenyl)-2,3-dihydro-1H-perimidine, C17H13BrN2
- Crystal structure of (5-ethyl-2-(4-methoxyphenyl)-1,3-dioxan-5-yl)methanol, C14H20O4
- Crystal structure of (E)-N-(4-bromo-2-(1-(hydroxyimino)ethyl)phenyl)benzamide, C15H13BrN2O2
- Crystal structure of caffeinium triiodide – caffeine (1/1), C16H21I3N8O4
- Crystal structure of methyl 2-methyl-4-(3-methoxyphenyl)-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C19H21NO4
- Crystal structure of (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-1-phenylprop-2-en-1-one, C23H28O2
- Crystal structure of 1,4-bis(2-azidoethyl)piperazine-1,4-diium dichloride, C8H18N8Cl2
- The crystal structure of dichlorido-(1,3-bis(2,6-dimethylphenyl)-1H-imidazol-2(3H)-ylidene)-(morpholine-κ1N)palladium(II), C23H29Cl2N3OPd(II)
- The crystal structure of 1-((5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-yl)methyl)-1,3-diphenylurea, C24H21ClN4O
- Crystal structure of 6-(2-bromoacetamido)tetrahydro-2H-pyran-2,3,4,5-Tetrayl tetraacetate, C16H22BrNO10
- Crystal structure of 5-methylpyrazine-2-carbohydrazide, C6H8N4O
- Crystal structure of catena-poly[(μ2-5-(tert-butyl)isophthalato-κ4O,O′:O′′,O′′′)(-4′-(pyridin-4-yl)-2,2′:6′,2′′-terpyridine-κ3N,N′,N′′)manganese(II)], C32H28N4O5Mn
Articles in the same Issue
- Cover and Frontmatter
- Crystal structure of 2-amino-4-(2,4-dinitrophenyl)-3-cyano-7,7-dimethyl-5-oxo-4H-5,6,7,8-tetrahydrobenzo-pyran, C18H16N4O6
- Crystal structure of catena-poly[(μ3-5-carboxy-2-(pyridin-4-yl)benzoato-κ5O,O′:O′′,O′′′:O′′′)(1,10-phenanthroline-κ2N,N′)cadmium(II)], C100H60N12O16Cd4
- Crystal structure of 2-amino-4-(3,4,5-trimethoxy-phenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C19H18N2O6
- Crystal structure of 1-{4-[(2-hydroxy-5-methyl benzylidene)amino]phenyl}ethanone O-ethyl-oxime, C18H20N2O2
- Crystal structure of bis{4-methyl-2-((E)-((4-((E)-1-(ethoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O)}copper(II), C36H38CuN4O4
- Crystal structure of bis{5-methoxy-2-((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O}nickel(II), C34H34N4NiO6
- Crystal structure of poly[μ8-3-carboxyphthalat-κ8-O:O1,O1,O1:O2:O3,O3:O4)silver(I)], C9H4Ag2O6
- Crystal structure of 2-((E)-((4-((E)-1-(hydroxyimino)ethyl)phenyl)iminio)methyl)-5-methoxyphenolate, C16H16N2O3
- Crystal structure of (E)-1-(4-(((E)-2-hydroxy-3-methoxybenzylidene)amino)phenyl)ethan-1-one oxime, C16H16N2O3
- The crystal structure of 2-(tert-butyl)-4-chloro-6-phenyl-1,3,5-triazine, C13H14Cl1N3
- Crystal structure of (6,6′-(((((2-aminoethyl)azanediyl)bis(ethane-2,1-diyl))bis(azanylylidene))bis(methanylylidene))bis(2,4-dichlorophenolato)-κ6N,N′,N′′,N′′′,O,O′)cadmium(II) – ethanol – water (1/1/1), C22H28CdCl4N4O4
- Crystal structure of 6-chloro-N-methylpyrimidin-4-amine, C5H6ClN3
- Synthesis and crystal structure of bis{((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)-2-naphtholato-κ2N,O}nickel(II), C40H34N4NiO4
- Crystal structure of (E)-2-(4-bromophenyl)ethenesulfonyl fluoride (C8H6BrFO2S)
- Synthesis and crystal structure of 2,2′-ethylenedioxybis(benzimide)-2,2′-bis[O-(1-propyloxyamide)]oxime-4,4′,6,6′-tetrachlorodiphenol, C36H34Cl4N4O8
- Crystal structure of bis(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)cadmium(II) – methanol (1/1), C26H28N10O4Zn
- Crystal structure of diaqua-(N-(1-(pyrazin-2-yl)ethylidene)nicotinohydrazonato-κ3N,N′,O)-bis(nitrato-κ2O,O′)samarium(III), C12H14N7O9Sm
- Crystal structure of hexaaqua-{(E)-N′-(1-(pyrazin-2-yl)ethylidene)isonicotinohydrazide-κ3N,N′,O}praseodym(III) trichloride monohydrate, C12H25Cl3N5O8Pr
- Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3
- Crystal structure of ethyl 2-amino-4-(2-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
- Crystal structure of 2,12-dibromo-5,15-dihexyl-5,15-dihydrobenzo [1,2-b:5,6-c′]dicarbazole, C38H38Br2N2
- Crystal structure of ethyl 2-amino-4-(3-hydroxy-4-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO7
- Crystal structure of ethyl 2-amino-4-(3,4-dimethylphenyl)-5-oxo-4H,5H-pyrano[3,2-c] chromene-3-carboxylate, C23H21NO5
- Crystal structure of 2-hydroxy-N′-(pyrimidin-2-yl)benzohydrazide, C11H10N4O2
- Crystal structure of 2-(3,4-dimethylphenyl)-1,8-naphthyridine, C16H14N2
- Crystal structure of ethyl 4-(3,4-dimethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C23H29NO3
- Crystal structure of ethyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C22H24N2O3
- Crystal structure of 7β,9β-dihydroxy-15-oxo-ent-kauran-16-en-19,6β-olide, C20H26O5
- Crystal structure of Ent-7β,20-epoxy-kaur-16-en-1β,6α,7α,14α,15α-pentaol-20-one, C20H30O8
- Crystal structure of 1,4-bis(benzo[d][1,3]dioxol-5-ylmethyl)dihydro-1H,3H-furo[3,4-c]furan-3a(4H)-yl acetate, C22H20O8
- Crystal structure of methyl 2-((4-((2-nitrophenoxy)methyl)-1H-1,2,3-triazol-1-yl)methyl) benzoate, C18H16N4O5
- Crystal structure of diaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O)zinc(II), C12H14N4O10Zn
- Hydrothemal synthesis and crystal structure of triaqua-bis(5-carboxy-1-methyl-1H-imidazole-4-carboxylato-κ2N,O;κ1O)manganese(II), C12H16N4O11Mn
- Redetermination of methyl 4-(4-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C20H22ClNO3
- Crystal structure of bis{1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-methyl-imdazol)-κN}-dithiocyano-κN-zinc(II) C24H22N12S2Zn
- Crystal structure of (5-fluoro-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methyl furan-2-carboxylate, C10H7FN2O5
- Crystal structure of bis(η6-cymene)-tri-μ2-chlorido-ruthenium(II) tetrafluoroborate, C20H28BCl3F4Ru2
- Crystal structure of 3,6-diphenyl-7H-[1,2,4]-triazolo[3,4-b][1,3,4]thiadiazine, C16H12N4S
- Synthesis and crystal structure of 1,3-bis[(3,4-dicyano)phenoxy]-4,6-dinitro-benzene, C22H8N6O6
- Crystal structure of ethyl 2-amino-4-(2,6-dichlorophenyl)-7-methyl-5-oxo-4H,5H-pyrano [4,3-b]pyran-3-carboxylate, C18H15Cl2NO5
- Crystal structure of poly[μ3-hydroxy-(μ5-(5-(2-carboxylatophenoxy)isophthalato-κ6O1:O2:O3:O4:O5,O6)-(μ2-1,4-di(1H-imidazol-1-yl)butane-κ2N:N′)dicobalt(II)] hemihydrate, C25H22Co2N4O8.5
- Crystal structure of methyl 4-(4-bromophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C20H22BrNO3
- Crystal structure of 9,10-dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino[3,2-a]isoquinolin-7-ium 5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-olate trihydrate, C35H33NO12
- Crystal structure of 2,5-bis(4-(10H-phenothiazin-10-yl)phenyl)-1,3,4-oxadiazole, C38H24N4OS2
- The crystal structure of (E)-2-(4-hydroxyphenyl)-5-(prop-1-en-1-yl)benzofuran-3-carbaldehyde, C18H14O3
- Crystal structure of bis{5H-dibenzo[c,f][1,5]oxabismocin-12(7H)-yl} carbonate, C29H24O5Bi2
- Crystal structure of ethyl-5-formyl-3,4-dimethylpyrrole-2-carboxylate — N-(5-ethoxycarbonyl-3,4-dimethylpyrrole)-2-methylene-5-nitrobenzene-1,2-diamine (1:1), C26H31N5O7
- Crystal structure of (E)-2-(1-((2-aminophenyl)imino)ethyl)-6-bromo-4-chlorophenol, C14H12BrClN2O
- Crystal structure of (Z)-2-(4-chlorophenyl)-4-(furan-2-yl(phenylamino)methylene)-5-methyl-2,4-dihydro-3H-pyrazol-3-one, C21H16ClN3O2
- Crystal structure of N2,N4-dibutyl-6-chloro-N2,N4-bis(1,2,2,6,6-pentamethylpiperidin-4-yl)-1,3,5-triazine-2,4-diamine, C31H58ClN7 – Important intermediate of Chimassorb 119 synthesis
- Crystal structure of 1-(5-bromo-2-(4-methoxyphenyl)-1H-indol-7-yl)ethanone oxime, C17H15BrN2O2
- Crystal structure of poly-{diaqua-bis[(μ2-3-nitrobenzenesulfonylglycine-κ3N:O:O′)(4,4′-bipyridine)manganese(II)]}-dimethylformamide (1/1), C39H35Mn2N9O15S2
- Crystal structure of 4-(dimethylamino)-1-(prop-2-yn-1-yl)pyridin-1-ium perchlorate, C10H13ClN2O4
- Crystal structure of 2-amino-5-oxo-4-(4-chloro-phenyl)-4,5,6,7-tetrahydro-cyclopenta[b]pyran-3-carbonitrile, C15H11ClN2O2
- Crystal structure of triaqua-(pyridine-2,6-dicarboxylato-κ3O,N,O′)cobalt(II) – 6-phenyl-1,3,5-triazine-2,4-diamine (1/1), C16H18CoN6O7
- Crystal structure of ethyl 2-amino-4-(3-cyanophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate, C21H22N2O4
- Crystal structure of 2-(4-chloro-2,6-dinitrophenyl)-1-(4-chloro-3-nitrophenyl)diazene 1-oxide, C12H5Cl2N5O7
- Crystal structure of 3,4-dimethyl-2,6-dinitrophenol, C8H8N2O5
- Crystal structure of 1,2-dimethyl-3,5-dinitrobenzene, C8H8N2O4
- Crystal structure of ethyl 4-(3-chlorophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C21H24ClNO3
- Crystal structure of N-(4-chlorophenyl)-2-(2,6-dichlorophenyl)acetamide, C14H10Cl3NO
- Crystal structure of 2-amino-4-(4-fluorophenyl)-3-cyano-5-oxo-4H,5H-pyrano[3,2c] chromene, C19H11FN2O3
- The crystal structure of (4-nitrophenyl) (5-ferrocenyl-3-(trifluoromethyl)-1H-pyrazol-1-yl) methanone, C21H12F3FeN3O3
- Crystal structure of 5,5′-((3-hydroxy-4-methoxyphenyl)methylene)bis(1,3-diethyl-6-hydroxy-2-thioxo-2,3-dihydropyrimidin-4(1H)-one), C24H30N4O6S2
- Crystal structure of (3aR,4R,5R,7R,8S,9R,9aS,12R)-7-ethyl-5-(1-hydroxy-2-((R)-3-hydroxypyrrolidin-1-yl)ethoxy)-4,7,9,12-tetramethyldecahydro-4,9a-propanocyclopenta[8]annulene-3,8-diol – a pleuromutilin derivative, C26H41NO5
- Crystal structure of bis(μ2-3-formyl-5-methoxy-2-oxidobenzoato-κ3O,O′:O′)-hexapyridine-dicadmium(II) – pyridine (1/1), C53H47Cd2N7O10
- Crystal structure of ethyl 2-amino-4-(3-methoxyphenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C22H19NO6
- Crystal structure of methyl 4-(3,5-ditrifluoromethylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate — water (2/1), C22H21F6NO3
- Crystal structure of 2-(4-bromophenyl)-2,3-dihydro-1H-perimidine, C17H13BrN2
- Crystal structure of (5-ethyl-2-(4-methoxyphenyl)-1,3-dioxan-5-yl)methanol, C14H20O4
- Crystal structure of (E)-N-(4-bromo-2-(1-(hydroxyimino)ethyl)phenyl)benzamide, C15H13BrN2O2
- Crystal structure of caffeinium triiodide – caffeine (1/1), C16H21I3N8O4
- Crystal structure of methyl 2-methyl-4-(3-methoxyphenyl)-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C19H21NO4
- Crystal structure of (E)-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-1-phenylprop-2-en-1-one, C23H28O2
- Crystal structure of 1,4-bis(2-azidoethyl)piperazine-1,4-diium dichloride, C8H18N8Cl2
- The crystal structure of dichlorido-(1,3-bis(2,6-dimethylphenyl)-1H-imidazol-2(3H)-ylidene)-(morpholine-κ1N)palladium(II), C23H29Cl2N3OPd(II)
- The crystal structure of 1-((5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-yl)methyl)-1,3-diphenylurea, C24H21ClN4O
- Crystal structure of 6-(2-bromoacetamido)tetrahydro-2H-pyran-2,3,4,5-Tetrayl tetraacetate, C16H22BrNO10
- Crystal structure of 5-methylpyrazine-2-carbohydrazide, C6H8N4O
- Crystal structure of catena-poly[(μ2-5-(tert-butyl)isophthalato-κ4O,O′:O′′,O′′′)(-4′-(pyridin-4-yl)-2,2′:6′,2′′-terpyridine-κ3N,N′,N′′)manganese(II)], C32H28N4O5Mn