Startseite Crystal structure of 2-ethyl-1-tert-butyl 3-oxo-2-[phenyl(tert-butoxycarbonylamino)methyl]-1,2-pyrrolidinedicarboxylate, C24H34N2O7
Artikel Open Access

Crystal structure of 2-ethyl-1-tert-butyl 3-oxo-2-[phenyl(tert-butoxycarbonylamino)methyl]-1,2-pyrrolidinedicarboxylate, C24H34N2O7

  • Sifiso. S. Makhathini , Marivel Samipillai , Hendrik G. Kruger , Thavendran Govender und Tricia Naicker EMAIL logo
Veröffentlicht/Copyright: 23. März 2016

Abstract

C24H34N2O7, triclinic, P1̅ (no. 2), a = 9.9562(8) Å, b = 10.7465(9) Å, c = 13.7925(11) Å, α = 95.143°, β = 109.970(3)°, γ = 112.229(4)°, V = 1242.62(18) Å3, Z = 2, Rgt(F) = 0.0460, wRref(F2) = 0.1337, T = 173 K.

CCDC no.:: 1456601

The asymmetric unit of the crystal structure is shown in Figure 1. Tables 13 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.

Figure 1: The ORTEP diagram of the asymmetric unit of crystal structure of title compund, C24H34N2O7.
Figure 1:

The ORTEP diagram of the asymmetric unit of crystal structure of title compund, C24H34N2O7.

Table 1:

Data collection and handling.

Crystal:Colourless, block, size 0.18×0.24×0.32 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.91 cm−1
Diffractometer, scan mode:Bruker APEX-II, φ and ω scans
2θmax:57.1°
N(hkl)measured, N(hkl)unique:22730, 6107
N(param)refined:309
Programs:Bruker programs [5], SHELX [6], WinGx [7], Mercury [8]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomSitexyzUiso
H(2A)2i1.21180.87940.10260.035
H(2B)2i1.10620.93590.01840.035
H(3A)2i0.92640.7204−0.08010.040
H(3B)2i1.06780.6780−0.02420.040
H(10A)2i1.17861.08640.43770.060
H(10B)2i1.18481.23720.46350.060
H(10C)2i1.24121.19730.37460.060
H(11B)2i1.05391.26850.25000.069
H(11A)2i0.95991.28440.32040.069
H(11C)2i0.86651.17470.20660.069
H(12A)2i0.76901.01020.31360.054
H(12B)2i0.89301.11210.42840.054
H(12C)2i0.88970.96430.39440.054
H(16A)2i0.46400.63260.01170.063
H(16B)2i0.46780.6675−0.09820.063
H(17A)2i0.54730.86680.08610.129
H(17B)2i0.38720.8107−0.01970.129
H(17C)2i0.55440.9032−0.02260.129
H(18)2i1.00620.78130.30780.026
H(20)2i1.11150.54780.17910.040
H(21)2i1.37010.58390.20980.047
H(22)2i1.58520.78540.32870.047
H(23)2i1.54040.95650.41040.047
H(24)2i1.28130.92600.37400.037
H(25)2i0.861(2)0.505(2)0.200(1)0.034(4)
H(30A)2i0.48600.20720.25030.071
H(30B)2i0.49270.17960.36360.071
H(30C)2i0.62850.17970.32660.071
H(31A)2i0.84370.36590.48820.089
H(31B)2i0.70920.35650.52960.089
H(31C)2i0.82500.50290.52180.089
H(32A)2i0.60610.54630.39560.080
H(32B)2i0.48060.41020.40920.080
H(32C)2i0.47100.42490.29280.080
Table 3:

Fractional coordinates and atomic displacement parameters (Å2).

AtomSitexyzU11U22U33U12U13U23
N(1)2i1.0211(1)0.8753(1)0.13056(8)0.0277(5)0.0248(5)0.0242(5)0.0130(4)0.0141(4)0.0093(4)
O(2)2i0.8377(1)0.5148(1)0.02935(8)0.0355(5)0.0274(5)0.0291(5)0.0123(4)0.0083(4)−0.0002(4)
C(2)2i1.1022(2)0.8658(2)0.0607(1)0.0359(7)0.0339(7)0.0286(6)0.0188(6)0.0194(6)0.0118(5)
C(3)2i1.0004(2)0.7197(2)−0.0109(1)0.0446(8)0.0347(7)0.0275(6)0.0211(6)0.0191(6)0.0081(5)
C(4)2i0.9103(2)0.6393(1)0.0481(1)0.0274(6)0.0308(7)0.0204(5)0.0163(5)0.0064(5)0.0032(5)
C(5)2i0.9223(1)0.7417(1)0.14132(9)0.0236(5)0.0217(6)0.0214(5)0.0105(5)0.0098(5)0.0060(4)
C(6)2i1.0531(2)1.0023(1)0.1850(1)0.0254(6)0.0256(6)0.0227(5)0.0130(5)0.0097(5)0.0094(5)
O(7)2i1.1465(1)1.1107(1)0.17901(8)0.0391(5)0.0262(5)0.0361(5)0.0126(4)0.0218(4)0.0118(4)
O(8)2i0.9654(1)0.98803(9)0.24228(7)0.0302(5)0.0234(4)0.0295(4)0.0112(4)0.0167(4)0.0062(4)
C(9)2i0.9972(2)1.1081(1)0.3228(1)0.0347(7)0.0245(6)0.0301(6)0.0142(5)0.0177(6)0.0056(5)
C(10)2i1.1654(2)1.1620(2)0.4071(1)0.0339(7)0.0428(9)0.0353(7)0.0118(6)0.0147(6)−0.0025(6)
C(11)2i0.9667(2)1.2187(2)0.2703(2)0.072(1)0.0386(9)0.0515(9)0.0363(9)0.0351(9)0.0191(7)
C(12)2i0.8765(2)1.0429(2)0.3689(1)0.0384(7)0.0371(8)0.0402(8)0.0169(6)0.0244(6)0.0087(6)
C(13)2i0.7515(2)0.7219(1)0.1185(1)0.0243(6)0.0257(6)0.0288(6)0.0116(5)0.0084(5)0.0045(5)
O(14)2i0.6859(1)0.6931(1)0.17685(9)0.0295(5)0.0502(7)0.0421(6)0.0189(5)0.0189(5)0.0157(5)
O(15)2i0.6862(1)0.7347(1)0.01981(9)0.0310(5)0.0589(7)0.0363(5)0.0252(5)0.0095(4)0.0178(5)
C(16)2i0.5183(2)0.7043(2)−0.0198(2)0.0307(8)0.071(1)0.0485(9)0.0261(8)0.0034(7)0.0142(9)
C(17)2i0.5002(3)0.8321(3)0.0084(3)0.057(1)0.085(2)0.124(2)0.052(1)0.023(1)0.030(2)
C(18)2i1.0002(1)0.7124(1)0.25073(9)0.0245(5)0.0194(6)0.0215(5)0.0093(5)0.0101(5)0.0057(4)
C(19)2i1.1692(2)0.7339(1)0.27269(9)0.0252(6)0.0238(6)0.0215(5)0.0120(5)0.0090(5)0.0096(4)
C(20)2i1.1983(2)0.6322(2)0.2253(1)0.0312(7)0.0329(7)0.0318(7)0.0179(6)0.0059(6)0.0013(6)
C(21)2i1.3524(2)0.6527(2)0.2446(1)0.0390(8)0.0466(9)0.0403(8)0.0288(7)0.0134(7)0.0094(7)
C(22)2i1.4798(2)0.7725(2)0.3141(1)0.0285(7)0.0437(9)0.0520(9)0.0196(6)0.0161(7)0.0209(7)
C(23)2i1.4529(2)0.8737(2)0.3624(1)0.0266(7)0.0290(7)0.0515(9)0.0078(6)0.0090(6)0.0120(6)
C(24)2i1.2983(2)0.8551(1)0.3412(1)0.0289(6)0.0230(6)0.0361(7)0.0106(5)0.0100(6)0.0080(5)
N(25)2i0.9034(1)0.5751(1)0.25539(9)0.0305(5)0.0190(5)0.0268(5)0.0077(4)0.0129(5)0.0050(4)
C(26)2i0.8418(2)0.5585(1)0.3298(1)0.0249(6)0.0231(6)0.0263(6)0.0090(5)0.0093(5)0.0090(5)
O(27)2i0.8786(1)0.6502(1)0.40521(8)0.0396(5)0.0291(5)0.0295(5)0.0073(4)0.0187(4)0.0044(4)
O(28)2i0.7384(1)0.4243(1)0.30790(8)0.0343(5)0.0225(5)0.0375(5)0.0062(4)0.0184(4)0.0098(4)
C(29)2i0.6524(2)0.3769(2)0.3758(1)0.0291(6)0.0304(7)0.0446(8)0.0123(6)0.0197(6)0.0196(6)
C(30)2i0.5564(2)0.2222(2)0.3245(2)0.0410(8)0.0277(8)0.080(1)0.0120(7)0.0324(9)0.0209(8)
C(31)2i0.7677(3)0.4028(2)0.4888(2)0.058(1)0.065(1)0.048(1)0.017(1)0.0194(9)0.0365(9)
C(32)2i0.5429(2)0.4456(2)0.3676(2)0.0425(9)0.0391(9)0.093(2)0.0218(8)0.037(1)0.0227(9)

Source of material

A mixture of 3-keto proline (1.0 eq) and N-Boc-aldimines (1.2 eq) was stirred in the presence of proline as catalyst (0.20 eq) at 20°C. The reaction progress was monitored using TLC, the solvent was removed under reduced pressure and the crude product was purified by column chromatography. (ethyl acetate/hexane, 15:85, Rf = 0.3) to afford the product (65%) as a yellowish oil. [α]23D = +20 (c = 0.01 in CH2Cl2). 1H NMR (400 MHz, CDCl3): δ = 7.22–7.17 (m, 3H), 7.11–7.04 (m, 2H), 6.63–6.26 (m, 1H), 5.74–5.56 (m, 1H), 4.30–4.03 (m, 2H); 3.92–3.69 (m, 1H), 3.62–3.44 (m, 1H), 2.64–2.58 (m, 1H), 2.54–2.45 (m, 1H), 1.49–1.33 (m, 18H), 1.22–1.16 (m, 3H). The title compound (3.0 mg) was dissolved in acetonitrile (CH3CN) in a NMR tube by sonication for 3 min. The tube was covered with parafilm with a tiny outlet to enable the solvent to slowly evaporate at ambient conditions. Crystals suitable for X-ray diffraction formed over the period of 15 days.

Experimental details

Data reduction and cell refinement were performed using the program SAINT-Plus [5]. In the case of triclinic crystal system finding the space group is no sorcery. The structure was solved by direct methods using SHELXS [6] and refined by full-matrix least-squares methods based on F2 using SHELXL-2014 [6] and using the graphics interface program WinGX [7] and Mercury 3.7 [8] were used to prepare molecular graphics. All hydrogen atoms, except H25, 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 hydrogen atom H25 was located in the difference electron density maps and refined independently.

Discussion

The usefulness of proline to induce turns in peptides can have a significant effect on its biological conformation thereby influencing ligand binding and overall protein activity [1, 2]. The fact that small peptide drugs still have some unresolved issues; researchers have examined proline analogues that mimic its properties. In addition, unnatural prolines have been employed as organocatalysts [3]. Hence, the asymmetric synthesis of pyrrolidine derivatives for both biological and catalytic purposes has received significant attention. The catalytic asymmetric synthesis of α,α-disubstituted proline analogues have been rather neglected. Currently, we are interested in the synthesis of α,α-disubstituted proline analogues with the aid of current knowledge on organocatalysed α-substitution on the scarcely studied 3-ketoproline backbone [4].

The crystal structure analysis revealed that the oxopyrrolidine ring was distorted as one of its methyl groups (C2) is leaning towards the aromatic ring forming a C—H⋯π interaction (H⋯π = 3.13 Å). The C2 atom deviated from the plane of the remaining four atoms on the oxopyrrolidine ring by 0.345 Å. The hydrogen bonding analysis is given in Figure 2. The carbonylamino group of tert-butoxycarbonylamino lies parallel to the plane of the oxopyrrolidine ring and it is noteworthy that the amino group, a potential hydrogen bond donor, did not form hydrogen bonds with the neighbouring molecule within the crystal. This was perhaps due to a bulky tert-butyloxy substitution attached next to the carbonylamino group. However, C—H⋯O interactions play a pivotal role in stabilizing the molecules in the crystal. Thus the molecules in the crystals are interconnected through four major types of cyclic C—H⋯O hydrogen bond dimers such as; (i) formed between the oxopyrrolidine rings of adjacent molecules [H⋯A = 2.59 Å, D⋯A = 3.5002(3) Å, D—H⋯A = 154°] with the graph set of R22(8) [9], (ii) formed between oxopyrrolidinebutoxycarbonyl moieties [H⋯A = 2.54 Å, D⋯A = 3.3613 (3) Å, D—H⋯A = 140°] with the graph set of R22(12), (iii) formed between ethylester (H) and oxopyrrolidine (O) atom [H⋯A = 2.63 Å, D⋯A = 3.38(2) Å, D—H⋯A = 132°] with the graph set of R22(14) (iv) formed between tert-butoxycarbonyl (O) atom [H⋯A = 2.47 Å, D⋯A = 3.3864(3) Å, D—H⋯A = 155°] with the graph set of R22(22).

Figure 2: Analysis of the hydrogen bonding scheme of the title structure.
Figure 2:

Analysis of the hydrogen bonding scheme of the title structure.


Corresponding author: Tricia Naicker, Catalysis and Peptide Research Unit, University of KwaZulu Natal, Durban 4000, South Africa, e-mail:

References

1. Mothes, C.; Caumes, C.; Guez, A.; Boullet, H.; Gendrineau, T.; Darses, S.; Delsuc, N.; Moumne, R.; Oswald, B.; Lequin, O.; Karoyan, P.: 3-Substituted prolines: from synthesis to structural applications, from peptides to foldamers. Molecules 18 (2013) 2307–2327.10.3390/molecules18022307Suche in Google Scholar PubMed PubMed Central

2. Fatas, P.; Jimenez, A. I.; Isabel Calaza, M.; Cativiela, C.: β-Phenylproline: the high β-turn forming propensity of proline combined with an aromatic side chain. Org. Biomol. Chem. 10 (2012) 640–651.10.1039/C1OB06561KSuche in Google Scholar

3. Jensen, K. L.; Dickmeiss, G.; Jiang, H.; Albrecht, L.; Jorgensen, K. A.: The diarylprolinol silyl ether system: a general organocatalyst. Acc. Chem. Res. 12 (2012) 248–264.10.1021/ar200149wSuche in Google Scholar PubMed

4. Das, S. K.; Bhatt, N.; Mujahid, M.; Arvidsson, P. I.; Kruger, H. G.; Naicker, T.; Govender, T.: Towards a stereoselective synthesis of α,α-disubstituted proline analogues. Tetrahedron Lett. 56 (2015) 5172–5174.10.1016/j.tetlet.2015.07.065Suche in Google Scholar

5. Bruker: SAINT and APEX2. Bruker AXS Inc., Madison, WI, USA, 2006.Suche in Google Scholar

6. Sheldrick, G. M.: A short history of SHELX. Acta Crystallogr. A64 (2008) 112–12.10.1107/S0108767307043930Suche in Google Scholar PubMed

7. Farrugia, L. J.: WinGX, v1.70.01 and ORTEP-3 for Windows: an update. J. Appl. Cryst. 45 (2012) 849–854.10.1107/S0021889812029111Suche in Google Scholar

8. Mercury 3.7. Supplied with Cambridge Structural Database CCDC: Cambridge, UK, 2015.Suche in Google Scholar

9. Etter, M. C.; MacDonald, J. C.; Bernstein J.: Graph-set of hydrogen-bond patterns in oranic crystals. Acta Cryst. B46 (1990) 256–262.10.1107/S0108768189012929Suche in Google Scholar PubMed

Received: 2015-10-29
Accepted: 2016-2-29
Published Online: 2016-3-23
Published in Print: 2016-9-1

©2016 Sifiso. S. Makhathini et al., published by De Gruyter.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Artikel in diesem Heft

  1. Frontmatter
  2. Crystal structure of poly[aqua(μ2-2,5-bis(4-pyridyl)-1,3,4-oxadiazole-κ2N,N)(μ2-1,3-phenylenediacetato-κ3O,O′:O′′)cobalt(II)], C22H18CoN4O6
  3. Crystal structure of 2-amino-7,7-dimethyl-5-oxo-4-(3-phenoxy-phenyl)-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile
  4. Crystal structure of (E)-4,4′-(diazene-1,2-diyl)bis(1-nitro-1H-1,2,4-triazol-5(4H)-one)—acetonitrile (1:1), C6H5N11O6
  5. Crystal structure of potassium (E)-5-oxo-4-((5-oxo-1H-1,2,4-triazol-4(5H)-yl)diazenyl)-4,5-dihydro-1,2,4-triazol-1-ide – (E)-4,4-diazene-1,2-diylbis(2,4-dihydro-3H-1,2,4-triazol-3-one) – methanol (1/1/1), C9H11N16KO5
  6. Crystal structure of (N,N′-bis(2-(((2,6-diisopropylphenyl)imino)methyl)phenyl)benzene-1,2-diamido-κ4O,O′,O′′,O′′′)oxidovanadium(IV), C44H48N4OV
  7. Crystal structure of 5,5-bis(4-iodophenyl)-5H-cyclopenta[2,1-b:3,4-b′]dipyridine, C23H14I2N2
  8. Crystal structure of aquadichloridobis(1-((2-methyl-1H-imidazol-1-yl)methyl)-1H-benotriazole-κN)mercury(II), C22H24Cl2HgN10O
  9. Crystal structure of 2-[4-(1H-imidazol-1-yl)phenyl]-1H-benzimidazol-3-ium [2-(carboxymethyl)phenyl]acetate monohydrate, C26H24N4O5
  10. Crystal structure of 4,4′-bipiperidinium dichloride 0.12 hydrate, C10H22N2Cl2 · 0.12 H2O
  11. Crystal structure of catena-poly[tetraaqua(μ2-4,4′(E)-ethene-1,2-diyldipyridine-κ2N:N′)nickel(II)] bis(6-methyl-2-oxo-1,2-dihydro-pyridine-4-carboxylate) pentahydrate, C26H42N4O15Ni
  12. Crystal structure of ethyl-5-amino-1-(2,4-dinitrophenyl)-1H-pyrazole-4-carboxylate, C12H11N5O6
  13. Crystal structure of dicarbonyl(pyridin-2-olate-1-oxido-κ2O,O′)rhodium(I), C7H4NO4Rh
  14. Crystal structure of 1-(adamantan-1-yl)-3-(4-chlorophenyl)thiourea, C17H21ClN2S
  15. Crystal structure of 2-((2-chloropyridin-3-ylamino)methylene)malononitrile, C9H5ClN4
  16. Crystal structure of tetraaquabis(μ2-4-chlorobenzoato-κ2O:O,O′)bis(4-chlorobenzoato-κO)bis(1,10-phenanthroline-κ2N,N′)distrontium(II), C52H40Cl4N4O12Sr2
  17. Crystal structure of 3-hydroxy-3-phenyl-1,3-dihydro-2H-indol-2-one, C14H11NO2
  18. Crystal structures of bis(1,10-phenanthrolin-1-ium) aquapentakis(nitrato-κ2O,O′)neodym(III) monohydrate, C24H22N9NdO17
  19. Crystal structure of 2-ethyl-1-tert-butyl 3-oxo-2-[phenyl(tert-butoxycarbonylamino)methyl]-1,2-pyrrolidinedicarboxylate, C24H34N2O7
  20. Crystal structure of poly[diaquabis(μ4-benzene-1,3,5-tricarboxylato-κO1O2O3O4O5O6)-bis(μ2-4,4′-benzene-1,3-diylbis(4H-1,2,4-triazole-κ2N:N′)tricadmium(II)] tetrahydrate, C38H34Cd3N12O18
  21. Crystal structure of trans-dichlorido[1,3-bis(9-methyl-9H-fluoren-9-yl) benzimidazol-2-ylidene](pyridine)palladium(II) – a compound with anagostic CH–Pd interactions, C40H31Cl2N3Pd
  22. Crystal structure of catena-poly[(μ3-5-(4-(tetrazol-1-id-5-yl)phenoxy)benzene-1,3-dicarboxyato-κ3O:O′:N)(4-(3-(pyridin-4-yl)propyl)pyridinium-κN)zinc(II)], C28H22ZnN6O5
  23. Crystal structure of 3,6-di-2-pyridinyl-4-pyridazine carbonitrile, C15H9N5
  24. Crystal structure of 5,5,9,13-tetramethyltetracyclo[10·2·1·01,10·04,9]pentadecane-3,7,14-triol, C20H34O4
  25. Crystal structure of 2-amino-7-methyl-5-oxo-4-phenyl-4H,5H-pyrano[4,3-b]pyran-3-carbonitrile, C16H12N2O3
  26. Crystal structure of the poly[(1,10-phenanthroline-κ2N,N′)(μ3-carboxylatophenoxyacetato-κ4O,O′:O′′;O′′′)lead(II)] monohydrate, C21H16N2O6Pb
  27. Crystal structure of the poly[(μ4-biphenyl-4,4′-dicarboxylato-κ4O:O′:O′′:O′′′) bis(μ3-8-(11-(oxysulfonyl)-4-silbenyl)-2-(oxysulfonyl)stilbene-κ4O:O′:O′′,O′′′) bis(1,10-phenanthroline-k2N,N′) dipraseodymium(III)], C94H64N4O16Pr2S4
  28. Crystal structure of 3-iodo-5-methoxy-7-(methoxymethoxy)-4-(3-methoxyphenoxy)-2H-chromen-2-one, C19H17IO7
  29. Crystal structure of poly[(5-carboxy-2,6-dimethylpyridinium-3-carboxylato-κO)tris(μ2-2,6-dimethylpyridinium-3,5-dicarboxylato-κ3O,O′:O′′)erbium(III)], C36H33ErN4O16
  30. This molecule targets at type 2 diabetes - a single crystal study on (2R,3S,5R)-2-(2,5-difluorophenyl)-5-[2-(methylsulfonyl)-2,6-dihydropyrrolo[3,4-c]pyrazol-5(4H)-yl] tetrahydro-2H-pyran-3-amine (Omarigliptin), C17H20F2N4O3S
  31. Crystal structure of poly[(μ2-2,2′-benzene-1,2-diyldiacetato-κ2O:O′), (μ2-1-(4-(1H-imidazol-1-yl)benzyl)-1H-1,2,4-triazole-κ2N:N′)zinc(II)], C22H19N5O4Zn
  32. Crystal structure of tetraaqua(μ2-3-(3,5-dicarboxyphenoxy)benzene-1,2-dicarboxylato-κ2O:O′)manganese(II) dihydrate, C16H20O15Mn
  33. Crystal structure of 4,4′-sulfonyldipyridine, C10H8N2O2S
  34. Crystal structure of 4-[(E)-(2-chloro-6-fluorobenzylidene)amino]-1,2-dihydro-2,3-dimethyl-1-phenylpyrazol-5-one, C18H15ClFN3O
  35. Crystal structure of carbonyl(2-oxopyridin-1(2H)-olato-κ2O, O′)(triphenylphosphine-κP)rhodium(I), C24H19NO3PRh
  36. Crystal structure of diaquabis(2-(3-bromophenyl)-5-carboxy-1H-imidazol-4-carboxylato-κ2O,N) cobalt(II) trihydrate, C22H22Br2CoN4O13
  37. Crystal structure of 4-(pyridin-4-ylmethylsulfonyl)pyridine, C11H10N2O2S
  38. Crystal structure of poly[(μ4-1-methyl-1H-tetrazole-5-thiolato-κ3S:S:N:N′)copper(I)], C2H3CuN4S
  39. Crystal structure of poly[diaquabis(μ2-4,4′-sulfinyldipyridine-κ2N,N′)zinc(II)] diperchlorate dihydrate, C20H24N4O14S2Cl2Zn
  40. Crystal structure of (1-((1-benzylpyrrolidin-2-yl-κN)methyl)-3-isopropyl-1H-imidazol-2(3H)-ylidene–κC)dibromidopalladium(II), C18H25Br2N3Pd
  41. Crystal structure of pentacalcium tetranitridovanadate(V) mononitride based on a powder diffraction study, Ca5[VN4]N
  42. Crystal structure of ((1-((1-benzylpyrrolidin-2-yl)methyl)-3-ethyl-1H-imidazol-2(3H)-ylidene)-κ2C,N)dichloridopalladium(II), C17H23Cl2N3Pd
  43. Crystal structure of 9-allyl-4,5-dichloro-12-cyano-9,10-dihydro-9,10-ethanoanthracen-12-yl acetate, C22H17Cl2NO2
  44. Crystal structure of 4-bromo-2-(8-(3-ethoxy-2-hydroxyphenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)phenol, C18H19BrN2O5
  45. Crystal structure of 3-tert-butyl-3-hydroxy-1,3-dihydro-2H-pyrrolo[3,2-c]pyridin-2-one, C11H14N2O2
  46. Crystal structure of diaquabis(3-(3,5-dibromophenyl)-5-(pyridin-2-yl)-1,2,4-triazol-4-ido-κ2N,N′)nickel(II) mono hydrate, C26H20Br4N8NiO3
  47. Crystal structure of 5-(adamantan-1-yl)-3-[(2-trifluoromethylanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione, C20H22F3N3OS
  48. Crystal structure of 2-ethyl-1-tert-butyl-2-((4-fluorophenyl)(tert-butoxycarbonylamino)methyl)-3-oxo-pyrrolidine-1,2-dicarboxylate, C24H33FN2O7
  49. Crystal structure of bis(μ2-2-fluorobenzoato-κ2O:O:O′) bis(μ2-2-fluorobenzoato-κ2O:O′)dinitrato-κ2O,O′ bis(1,10-phenathroline-κ2N,N′)diterbium(III), C52H32F4N6O14Tb2
  50. Crystal structure of tetrabutylammonium 4-aminobenzenesulfonate 2/3 hydrate, C22H42N2O3S · 2/3 H2O
  51. Crystal structure of tetraethylammonium 4-aminobenzenesulfonate, C14H26N2O3S
  52. Crystal structure of bis(guanidinium) 3,3′-oxybis(6-carboxybenzoate), C18H20N6O9
  53. Crystal structure of N′-(4-methoxybenzylidene)-5-phenyl-1H-pyrazole-3-carbohydrazide, C18H16N4O2
  54. Crystal structure of N′-(4-nitrobenzylidene)-5-phenyl-1H-pyrazole-3-carbohydrazide, C17H13N5O3
  55. Crystal structure of 5-((4-bromophenyl)(2-hydroxy-6-oxocyclohex-1-en-1-yl)methyl)-6-hydroxy-1,3-dimethylpyrimidine-2,4(1H,3H)-dione, C19H19BrN2O5
  56. Crystal structure of 3-(((cyclohexyl(phenyl)methylidene)amino)oxy)-2-hydroxy-N-(propan-2-yl)propan-1-aminium chloride, C19H31ClN2O2
  57. Crystal structure of 6-hydroxy-5-((2-hydroxy-6-oxocyclohex-1-en-1-yl)(phenyl)methyl)-1,3-dimethylpyrimidine-2,4(1H,3H)-dione, C19H20N2O5
  58. Crystal structure of 2-(4-(4-bromophenyl)thiazol-2-yl)isoindoline-1,3-dione, C17H9BrN2O2S
  59. Crystal structure of 2-(4-methylbenzoyl)pyrene, C24H16O
  60. Crystal structure of N-(5-bromo-4-(p-tolyl)thiazol-2-yl)-4-chlorobutanamide, C14H14BrClN2OS
  61. Crystal structure of 4,5-diphenylthiazol-2-amine, C15H12N2S
  62. Crystal structure of poly[bis(μ2-4-(3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)benzoato-κ3N:O,O′)-lead(II)], C28H18O4N8Pb
  63. Crystal structure of (Z)-4-(4-oxopent-2-en-2-ylamino)benzenesulfonamide, C11H14N2O3S
  64. Crystal structure of poly[(μ2-2-methyl-1-(4-(2-methyl-2H-benzo[d] imidazol-1(7aH)-yl)butyl)-1H-benzo[d]imidazole-κ2N:N′)bis(μ3-5-tert-butylbenzene-1,3-dicarboxylato-κ4O:O,O′:O′′,O′′′)dicadmium(II)] tetrahydrate, C44H54Cd2N4O12
  65. Crystal structure of catena-poly-[aqua(μ2-4,4′-bipyridine-κ2N:N′)bis(3′,5,5′-tricarboxybiphenyl-2-carboxylato-κ2O,O′)cadmium(II)], C42H28N2O17Cd
  66. Crystal structure of (2RS,3RS)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pentan-3-ol, C15H20ClN3O
  67. Crystal structure of N′-(4-(dimethylamino)benzylidene)-5-phenyl-1H-pyrazole-3-carbohydrazide, C19H19N5O
  68. Crystal structure of 3-(benzofuran-2-yl)-5-(4-fluorophenyl)-4,5-dihydro-1Hpyrazole-1-carbothioamide, C18H14FN3OS
  69. Crystal structure of ent-1β-acetoxy-7α,14α-di-hydroxy-7β,20-epoxykaur-16-en-15-one, C22H30O6
  70. Crystal structure of 1α,7β-dihydroxy-11β-acetoxy-ent-7β,20-epoxykaur-16-en-15-one, C22H30O6
  71. Crystal structure of 7β,14β,15β-trihydroxy-1α-acetoxy-7α,20-epoxy-ent-kaurane, C22H32O6
  72. Crystal structure of ent-1β,7α,11α-trihydroxy-7β,20-epoxykaur-16-en-15-one, C20H28O5
  73. Crystal structure of poly-[tetraaquabis(μ8-benzene-1,2,4,5-tetracarboxylato-1κ3O4:O6:O8:2κ4O2:O2:O5:O5:3κ4O1:O3:O5:O7)(di-μ3-hydroxido)-pentazinc(II)] decahydrate, C20H34O32Zn5
  74. Crystal structure of 1-(4-methylthiazol-2-yl)-3-propylthiourea, C8H13N3S2
  75. Crystal structure of 2-((dimethylamino)methylene)-5,5-Dimethylcyclohexane-1,3-dione, C11H17NO2
  76. Crystal structure of poly[1,4-bis(2-methylbenzimidazol)butane-κ2N:N′)bis(4,4′-oxybis(benzoato-κ4O,O′:O′′,O′′′)dicadmium] monohydrate, C48H38Cd2N4O10
  77. Crystal structure of 2-(3-(benzofuran-2-yl)-5-(4-fluorophenyl)-4,5-dihydro-1H-pyrazol-1-yl)-4-(4-chlorophenyl)thiazole, C26H17ClFN3OS
  78. Crystal structure of bis(μ3-isophthalato-κ3O:O′:O′′)(μ2-1,4-\ bis((2-propyl-1H-benzo[d]imidazol-1-yl)methyl)benzene-κ2N:N′)dizinc(II), C22H19N2O4Zn
  79. Crystal structure of poly[bis(adipate-κ4O,O′:O′′, O′′′)(1,4-bis(2-methyl-1H-benzo[d]imidazol-1-yl)benzene-κ2N:N′)dizinc(II), C36H38N4O8Zn2
  80. Crystal structure of N-(2-(2-oxoindolin-4-yl)ethyl)-N-propylpropan-1-aminium tetraphenylborate, C40H45BN2O
  81. Crystal structure of 1-(2,3-dihydro-4-methyl-3-phenyl-2-thioxothiazol-5-yl)-1-ethanone, C12H11NOS2
  82. Crystal structure of 3-(adamantan-1-yl)-1-[(4-benzylpiperazin-1-yl)methyl]-4-[(E)-(2,6-difluorobenzylidene)amino]-1H-1,2,4-triazole-5(4H)-thione, C31H36F2N6S
  83. Crystal structure of 6-(4-chlorophenyl)-3-(thiophen-2-yl)-[1,2,4]triazolo[3,4-b][1,3,4]-thiadiazole, C13H7ClN4S2
  84. Crystal structure of bis(ethanaminium) poly[bis(hexaselenido-κ2Se1,Se6)palladate(II)], C4H16N2PdSe12
  85. Crystal structure of 2-(3-(benzofuran-2-yl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-phenylthiazole, C26H19N3OS
  86. Crystal structure of poly-[bis(μ3-5-hydroxyisophtalato-κ3O:O′:O′′)(μ2-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)dizinc(II)], C40H30N4O5Zn2
  87. Crystal structure of poly-[(μ-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)-bis(μ4-2,2′-(1,3-phenylene)diacetate-κ4O:O′:O′′:O′′′)dizinc(II)], C44H38N4O8Zn2
  88. Crystal structure of 5,17-bis-cyano-25,26,27,28-tetrapropyloxy-calix[4]arene, C42H46N2O4
  89. Crystal structure of poly-[μ-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)-bis(μ3-5-hydroxyisophthalate(2–)-κ3O,O′:O′′)dicadmium(II)] monohydrate, C64H54N8O11Cd2
  90. Crystal structure of poly-[μ-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)benzene-κ2N:N′)-bis(μ4-4,4′-sulfonyldibenzoato-κ4O:O′:O′′:O′′′)dicadmium(II)] monohydrate, C52H42N4O14Cd2
  91. Crystal structure of poly-[bis(μ4-adipato-κ4O:O′:O′′:O′′′)(μ2-1,4-bis((2-ethyl-1H-benzo[d]imidazol-1-yl)methyl)benzene-κ2N:N′)dizinc(II)], C38H42N4O8Zn2
  92. Crystal structure of (2-(2-chlorophenyl)-5-methyl-1,3-dioxan-5-yl)methanol, C12H15ClO3
  93. Crystal structure of 2-(4-Bromophenyl)-5-ethyl-1,3-dioxane-5-carboxylic acid, C13H15BrO4
  94. Crystal structure of (2-(4-bromophenyl)-5-ethyl-1,3-dioxan-5-yl)methanol, C13H17BrO3
  95. Crystal structure of 3-((1,3,5,7-tetraoxo-6-(pyridin-3-ylmethyl)-3,3a,4,4a,5,6,7,7a,8,8a-decahydro-4,8-ethenopyrrolo[3,4-f]isoindol-2(1H)-yl)methyl)pyridin-1-ium-κN-trichloridocobalt(II) hemihydrate, C24H22Cl3CoN4O4.5
  96. Crystal structure of 4-chloro-4′,6′-dichloro-2,2′-[propane-1,3-diyldioxybis(nitrilomethylidyne)]-diphenol, C17H14Cl3N2O4
  97. Crystal structure of 2-amino-4-(3-trifluoromethylphenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C17H13F3N2O2
  98. Crystal structure of bis(benzoato-κO)bis(4,4′-((1H-1,2,4-triazol-1-yl)methylene)dibenzonitrile-κN)zinc(II), C48H32N10O4Zn
  99. Crystal structure of 3-methyl-2H-chromen-2-one, C10H8O2
  100. Crystal structure of catena-poly-[aqua-(2-carboxy-5-(3-carboxy-5-carboxylatophenoxy)benzoato-κO)(μ2-4,4′-di(1H-imidazol-1-yl)-1,1′-biphenyl-κ2N:N′)cobalt(II)], C34H24N4O10Co
  101. Crystal structure of 4,4′-di(1H-imidazol-1-yl)-1,1′-biphenyl, C36H28N8
  102. Crystal structure of 1-(3-chloropropyl)piperidin-1-ium tetraphenylborate, C32H37BClN
  103. Crystal structure of dimethyl 5-(benzylamino)isophthalate, C17H17NO4
  104. Crystal structure of dimethyl 5-(dibenzylamino)isophthalate, C24H23NO4
  105. Crystal structure of N-(adamantan-1-yl)-4-phenylpiperazine-1-carbothioamide, C21H29N3S
  106. Crystal structure of (2,2′(cyclohexane-1,2-diylbis(nitrilo(E)methylylidene))diphenolato-κ4O,O′,N,N′)dimethanolmanganese(III) bromide, C22H28BrMnN2O4
  107. Crystal structure of 3,5,7-tris(morpholinomethyl)tropolone·0.67 hydrate, C22H33N3O5·0.67H2O
  108. Crystal structure of biphenyl-2,3′,5,5′-tetracarboxylic acid – 4,4′-biphenyl-4,4′-diyldipyridine (3/2), C49H34N3O8
Heruntergeladen am 8.9.2025 von https://www.degruyterbrill.com/document/doi/10.1515/ncrs-2015-0249/html
Button zum nach oben scrollen