Home The crystal structure of tetrakis(μ 2-2-amino-3,5-dibromobenzoate-κ 2 O:O′)-octakis(n-butyl-κ 1 C)-bis(μ 3-oxo)tetratin(II), C60H92Br8N4O10Sn4
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The crystal structure of tetrakis(μ 2-2-amino-3,5-dibromobenzoate-κ 2 O:O′)-octakis(n-butyl-κ 1 C)-bis(μ 3-oxo)tetratin(II), C60H92Br8N4O10Sn4

  • Kaoxue Li , Ailing Zhang ORCID logo , Shuhua Cao ORCID logo EMAIL logo and Jianmin Wang
Published/Copyright: April 29, 2024
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 239 Issue 4

Abstract

C60H92Br8N4O10Sn4, orthorhombic, Pccn (no. 56), a = 16.5363(14) Å, b = 20.3146(17) Å, c = 22.7452(19) Å, V = 7640.8(11) Å3, Z = 4, Rgt (F) = 0.0424, wRref (F 2) = 0.1254, T = 298 K.

CCDC no.: 2327818.

The crystal structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal: White cube
Size: 0.25 × 0.18 × 0.15 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 5.53 mm−1
Diffractometer, scan mode: φ and ω
θ max, completeness: 25.0°, >99 %
N(hkl)measured, N(hkl)unique, R int: 36,828, 6746, 0.083
Criterion for I obs, N(hkl)gt: I obs > 2 σ(I obs), 3989
N(param)refined: 394
Programs: Olex2, 1 SHELX 2 , 3
Table 2:

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

Atom x y z U iso*/U eq
Sn1 0.46034 (4) 0.84185 (2) 0.02228 (2) 0.04818 (18)
Sn2 0.51176 (3) 1.01197 (2) 0.07157 (2) 0.03932 (16)
Br1 0.63571 (7) 0.72268 (5) 0.31879 (5) 0.0926 (4)
Br2 0.48150 (8) 0.96006 (6) 0.37927 (4) 0.0924 (4)
Br3 0.30051 (6) 0.64107 (4) −0.26451 (4) 0.0662 (3)
Br4 0.45831 (8) 0.88435 (5) −0.30130 (4) 0.0823 (3)
N1 0.5958 (5) 0.7675 (3) 0.1942 (3) 0.078 (2)
H1A 0.6436 0.7808 0.1807 0.116*
H1B 0.5609 0.7646 0.1645 0.116*
H1C 0.6011 0.7282 0.2111 0.116*
N2 0.3242 (4) 0.6789 (3) −0.1348 (3) 0.0594 (19)
H2A 0.2722 0.6874 −0.1281 0.089*
H2B 0.3512 0.6797 −0.1010 0.089*
H2C 0.3290 0.6393 −0.1512 0.089*
O1 0.5182 (4) 0.8440 (3) 0.1166 (2) 0.0713 (19)
O2 0.4824 (3) 0.9436 (2) 0.1466 (2) 0.0508 (14)
O3 0.4286 (4) 0.8520 (2) −0.07033 (19) 0.0491 (14)
O4 0.3926 (4) 0.7508 (3) −0.0501 (2) 0.0705 (19)
O5 0.4814 (3) 0.9395 (2) 0.01336 (18) 0.0428 (13)
C1 0.3462 (6) 0.8360 (4) 0.0632 (3) 0.061 (2)
H1D 0.3354 0.7903 0.0726 0.074*
H1E 0.3486 0.8602 0.0999 0.074*
C2 0.2762 (6) 0.8624 (4) 0.0272 (4) 0.072 (3)
H2D 0.2672 0.8332 −0.0059 0.087*
H2E 0.2911 0.9051 0.0116 0.087*
C3 0.1975 (7) 0.8694 (5) 0.0612 (4) 0.079 (3)
H3A 0.1777 0.8258 0.0710 0.095*
H3B 0.2086 0.8922 0.0979 0.095*
C4 0.1315 (7) 0.9064 (6) 0.0285 (4) 0.099 (4)
H4A 0.1500 0.9499 0.0193 0.149*
H4B 0.0841 0.9090 0.0528 0.149*
H4C 0.1187 0.8834 −0.0072 0.149*
C5 0.5654 (7) 0.7853 (4) 0.0050 (4) 0.090 (4)
H5A 0.5756 0.7860 −0.0370 0.108*
H5B 0.6111 0.8061 0.0242 0.108*
C6 0.5608 (8) 0.7140 (5) 0.0251 (5) 0.107 (4)
H6A 0.5168 0.6921 0.0048 0.128*
H6B 0.5492 0.7127 0.0669 0.128*
C7 0.6396 (9) 0.6769 (5) 0.0132 (6) 0.119 (5)
H7A 0.6559 0.6834 −0.0274 0.143*
H7B 0.6822 0.6937 0.0384 0.143*
C8 0.6269 (11) 0.6038 (7) 0.0250 (6) 0.166 (7)
H8A 0.6021 0.5982 0.0628 0.249*
H8B 0.6782 0.5816 0.0245 0.249*
H8C 0.5925 0.5856 −0.0048 0.249*
C9 0.4117 (6) 1.0652 (4) 0.1033 (5) 0.080 (3)
H9A 0.4199 1.0737 0.1449 0.096*
H9B 0.4101 1.1074 0.0834 0.096*
C10 0.3313 (8) 1.0322 (6) 0.0956 (6) 0.118 (4)
H10A 0.3346 0.9888 0.1131 0.141*
H10B 0.3220 1.0263 0.0538 0.141*
C11 0.2581 (8) 1.0671 (6) 0.1214 (6) 0.117 (4)
H11A 0.2696 1.1138 0.1253 0.140*
H11B 0.2123 1.0621 0.0952 0.140*
C12 0.2383 (10) 1.0396 (7) 0.1791 (6) 0.153 (6)
H12A 0.1866 1.0182 0.1772 0.229*
H12B 0.2364 1.0743 0.2077 0.229*
H12C 0.2789 1.0081 0.1902 0.229*
C13 0.6358 (6) 0.9973 (5) 0.0874 (4) 0.075 (3)
H13A 0.6477 0.9519 0.0774 0.090*
H13B 0.6650 1.0245 0.0595 0.090*
C14 0.6718 (7) 1.0098 (6) 0.1467 (5) 0.099 (4)
H14A 0.6364 0.9911 0.1763 0.119*
H14B 0.6737 1.0570 0.1532 0.119*
C15 0.7567 (7) 0.9817 (6) 0.1552 (5) 0.101 (4)
H15A 0.7886 0.9924 0.1207 0.121*
H15B 0.7814 1.0036 0.1885 0.121*
C16 0.7615 (9) 0.9083 (7) 0.1652 (6) 0.131 (5)
H16A 0.7364 0.8975 0.2020 0.197*
H16B 0.8172 0.8949 0.1660 0.197*
H16C 0.7340 0.8858 0.1339 0.197*
C17 0.5083 (5) 0.8859 (4) 0.1569 (3) 0.047 (2)
C18 0.5279 (5) 0.8697 (3) 0.2191 (3) 0.0428 (19)
C19 0.5679 (5) 0.8115 (4) 0.2343 (3) 0.050 (2)
C20 0.5811 (5) 0.7994 (4) 0.2944 (4) 0.057 (2)
C21 0.5541 (6) 0.8430 (5) 0.3368 (4) 0.066 (3)
H21 0.5619 0.8337 0.3765 0.079*
C22 0.5158 (6) 0.8999 (4) 0.3203 (3) 0.059 (2)
C23 0.5031 (5) 0.9130 (4) 0.2622 (3) 0.047 (2)
H23 0.4773 0.9518 0.2514 0.057*
C24 0.4038 (5) 0.7944 (4) −0.0867 (3) 0.047 (2)
C25 0.3927 (5) 0.7826 (3) −0.1503 (3) 0.0414 (18)
C26 0.3553 (5) 0.7258 (3) −0.1722 (3) 0.0425 (18)
C27 0.3507 (5) 0.7179 (3) −0.2332 (3) 0.046 (2)
C28 0.3813 (5) 0.7631 (4) −0.2712 (3) 0.053 (2)
H28 0.3780 0.7560 −0.3115 0.064*
C29 0.4172 (5) 0.8192 (4) −0.2499 (3) 0.052 (2)
C30 0.4225 (5) 0.8288 (3) −0.1900 (3) 0.0449 (19)
H30 0.4467 0.8670 −0.1758 0.054*

1 Source of materials

In a representative experiment 2-amino-3,5-dibromobenzoic acid (0.295 g; 1 mmol) was dissolved in toluene in 15 mL. To this solution 0.068 g (1.0 mmol) sodium ethoxide was added. After stirring the mixture for 30 min, dibutyltin oxide (0.249 g, 1 mmol) was added. The reaction mixture was heated to 100 °C and stirred continuously for 6 h at this temperature. After the reaction mixture was filtered, the solvent was evaporated in vacuo, cube shaped crystals were obtained from acetonitrile solution.

2 Experimental details

Using Olex2, 1 the structure was solved with the ShelXS-1997 2 structure solution program using Direct Methods and refined with the ShelXL-1997 3 refinement package. Coordinates of hydrogen atoms were refined with constraints. Their U iso values were set to 1.2U eq of the parent atoms for methylene group and aromatic ring, U iso(H) = 1.5 times U eq(methyl group).

3 Comment

Since cisplatin has been used as an antitumor drug, the antitumor activity of metal complexes has received increasing attention. 4 , 5 In addition to antitumor activity, organotin complexes have attracted more attention because they have antibacterial, antifungal and insecticidal properties. 6 – 8 In addition, many crystal structures of organic tin compounds have been reported. 9 , 10

The molecular structure of title complex is shown in the figure (70 % displacement ellipsoids). It has a tetranuclear structure, which contains four 2-amino-3,5-dibromobenzoate anions, eight n-butyl anions, two oxygen dianions and four tin cations. In the complex, each tin ion is five-coordinated in a trigonal bipyramid with the n-butyl substituents occupying axial positions. In the asymmetric unit, one tin atoms coordinating with two oxygen atoms from the carboxyl group, one oxygen dianionic group, and two n-butyl groups, the other tin atoms coordinating with one carboxyl oxygen atom, two oxygen dianionic groups, and two n-butyl groups. Four tin ions in the unit form a parallelogram on the same plane, with adjacent edges of 3.686 Å and 3.731 Å, respectively. The bond lengths of Sn–O range from 2.024(4) Å to 2.348(5) Å [Sn1–O1 = 2.348(5) Å, Sn1–O3 = 2.181(4) Å, Sn1–O5 = 2.024(4) Å, Sn2–O5 = 2.043(4) Å, Sn2–O51 = 2.172(4) Å, Sn2–O2 = 2.252(4) Å], which are not significantly different from the bond lengths of other organic tin Sn–O bonds [2.2270(12) Å]. 11 The bond lengths of Sn–C range from 2.103(10) Å to 2.119(11) Å, [Sn1–C1 = 2.107(9) Å, Sn1–C5 = 2.119(11) Å, Sn2–C9 = 2.119(11) Å, Sn2–C13 = 2.103(10) Å], which are in the expected ranges. The bond angles of C–Sn–O range from 81.1(3)° to 141.8(4)°. The bond angles of O–Sn–O range from 76.31(19)° to 168.1(2)° 12 .

There are intramolecular hydrogen bonds, which are N1–H…O1 [distance = 2.679 Å] and N2–H…O4 [distance = 2.669 Å]. There is no hydrogen bonding between molecules. The entire molecule is arranged in a p–p stacking manner to form a network structure. The centroid–centroid distance is 3.674 Å and the shift distance is 1.090 Å.

Corresponding author: Shuhua Cao, College of Chemistry, Chemical and Environmental Engineering, Weifang University, Weifang, Shandong, P.R. China, E-mail:

Acknowledgements

We gratefully acknowledge support by Shandong Province Higher Education Undergraduate Teaching Reform Research Project (M2023099) for financial support.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: Shandong Province Higher Education Undergraduate Teaching Reform Research Project (M2023099).

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2024-02-29
Accepted: 2024-04-16
Published Online: 2024-04-29
Published in Print: 2024-08-27

© 2024 the author(s), published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  48. The crystal structure of propane-1-aminium-2-carbamate, C4H10N2O2
  49. Crystal structure of 5,6,3′,4′,5′-pentamethoxy-flavone dihydrate, C20H24O9
  50. Crystal structure of (E)-N-(2-bromophenyl)-4-(4-(3,5-dimethoxystyryl)phenoxy)pyrimidin-2-amine, C26H22BrN3O3
  51. Crystal structure of methyl (3R)-1-(2-bromo-4-fluorophenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate hydrochloride hydrate, C19H19BrClFN2O3
  52. The crystal structure of 1-(2-chlorophenyl)-3-(p-tolyl)urea, C14H13ClN2O
  53. The crystal structure of 1-cyclohexyl-3-(p-tolyl)urea, C14H20N2O
  54. Crystal structure of ((benzyl(hydroxy)-amino)(4-chlorophenyl)methyl)-diphenylphosphine oxide, C26H23ClNO2P
  55. The crystal structure of ethyl 3-(1-methyl-1H-indole-2-carbonyl)-2-phenylquinoline-4-carboxylate, C28H22N2O3
  56. The crystal structure of 1,4-bis(1H-imidazol-3-ium-1-yl)benzene dinitrate, C12H12N4 2+·2(NO3 −)
  57. Crystal structure of tris(hexafluoroacetylacetonato-κ2O,O′) bis(triphenylphosphine oxide-κ1O)samarium(III), C51H33F18O8P2Sm
  58. Crystal structure of 1-(4-(dimethylamino)phenyl)-2,3-bis(diphenylphosphoryl)propan-1-one, C35H33NO3P2
  59. Crystal structure of diaqua[bis(μ 2-pyridine 2,6-dicarboxylato) bismuth(III) potassium(I)], C14H10BiKN2O10
  60. Crystal structure of (R)-N, N ′-dimethyl-[1, 1′-binaphthalene]-2, 2′-diamine, C22H20N2
  61. Crystal structure of 1-phenyl-4-(2-furoyl)-3-furyl-1H-pyrazol-5-ol, C18H12N2O4
  62. Crystal structure of bis(14,34-dimethyl[11,21:23,31-terphenyl]-22-yl)diselane, C40H34Se2
https://doi.org/10.1515/ncrs-2024-0098
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Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. The crystal structure of hexaquazinc(II) poly[hexakis(μ2-4-methylbenzenesulfinato-κ2O:O′) dizinc(II)]
  4. The crystal structure of poly[((2-(4,5-dihydro-1H-pyrazol-4-yl)-1,3-dioxoisoindoline-5-carbonyl)oxy)(1-(dimethylamino)ethoxy)zinc[II]], C16H14ZnN4O5
  5. Crystal structure of bis[(triaqua-4-iodopyridine-2,6-dicarboxylato-κ 3 N,O,O ″)cobalt(II)] trihydrate, C14H22N2O17I2Co2
  6. Crystal structure of bis(methanol-κO)-bis(nitrato-kO)-bis(1-((2-(2-chloro-4-(4-chlorophenoxy)phenyl)-4-methyl-1,3-dioxolan-2-yl)methyl)-1H-1,2,4-triazole-κN)cadmium(II), C40H42O14N8Cl4Cd
  7. Crystal structure of poly[μ2-dichlorido-(μ2-1-[(2,4-dimethyl-1H-triazole-1-yl)methyl]-1H-benzotriazole-κ2N:N′)cadmium(II)], C11H12CdN6Cl2
  8. The crystal structure of (3aS, 4R, 7S, 7aR)-hexahydro-4, 7-methano-1H-isoindole-1, 3-(2H)-dione, C9H11NO2
  9. The crystal structure of N-(acridin-9-yl)-4-chloro-N-(4-chloro-butanoyl) butanamide, C21H20Cl2N2O2
  10. Crystal structure of 3,3′-dimethoxy-4,4′-oxy-di-benzaldehyde, C16H14O5
  11. The crystal structure of tetrakis(μ 2-2-amino-3,5-dibromobenzoate-κ 2 O:O′)-octakis(n-butyl-κ 1 C)-bis(μ 3-oxo)tetratin(II), C60H92Br8N4O10Sn4
  12. Crystal structure of methyl-1-(naphthalen-1-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b] indole-3-carboxylate, C23H20N2O2
  13. Crystal structure of tetrapropylammonium bicarbonate–1-(diaminomethylene)thiourea(1/1)
  14. Crystal structure of 6,6′-((1E,1′E)-((2-phenylpyrimidine-4,6-diyl)bis(hydrazin-2-yl-1-ylidene))bis(methaneylylidene))bis(2-methoxyphenol)monohydrate, C26H26N6O5
  15. Crystal structure of bis(N,N,N-trimethylbutanaminium) tetrathiotungstate(VI), (BuMe3N)2[WS4]
  16. The crystal structure of 2,3,9-triphenyl-9-(2-phenylbenzofuran-3-yl)-9H-9λ 5-benzo[4,5][1,2]oxaphospholo[2,3-b][1,2,5]oxadiphosphole 2-oxide, C40H28O4P2
  17. Crystal structure of 1–methyl-3-propyl-4-nitro-1H-pyrazole-5-carboxylic acid, C8H11N3O4
  18. Crystal structure of N-(benzo[d]thiazol-2-yl)-2-chloroacetamide, C9H7ClN2OS
  19. The crystal structure of N-benzyl-2-chloro-N-(p-tolyl) acetamide, C16H16ClNO
  20. Crystal structure of 3,4-dimethoxybenzyl 2-(6-methoxynaphthalen-2-yl)propanoate, C23H24O5
  21. Crystal structure of 2,5-bis(2,5-dimethoxybenzyl)-3,6-dimethyl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione, C26H28N2O6
  22. Crystal structure of poly[(μ3-5-bromoisophthalato-κ4 O,O′ :O″,O‴)-(μ2-1,2-bis(1,2,4-triazole-1-ylmethyl)benzene-κ2 N:N′)cobalt(II)], C20H15BrCoN6O4
  23. The crystal structure of bis(2-(piperidin-1-ium-4-yl)-1Hbenzo[d]imidazol-3-ium) dihydrogen decavanadate, C24H36N6O28V10
  24. Crystal structure of diaqua-bis(1-(3-carboxyphenyl)-5-methyl-4-oxo-1,4-dihydropyridazine3-carboxylato-O,O′)-cobalt(ii)dihydrate, C26H36N4O14Co
  25. Crystal structure of poly[(μ2-5-bromoisophthalato-κ4 O,O ′:O ″,O ‴)-(μ2-1,4-bis(2-methylimidazol-1-ylmethyl)benzene-N:N′)cadmium(II)], C24H21BrCdN4O4
  26. The crystal structure of dimethyl 8-(3-methoxy-2-(methoxycarbonyl)-3-oxoprop-1-en-1-yl)-4-methyl-1-(p-tolyl)-1,3a,4,8b-tetrahydro-3H-furo[3,4-b]indole-3,3-dicarboxylate. C28H29NO9
  27. Crystal structure of (3R)-1-(3,5-dimethoxyphenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate chloride, C21H23ClN2O4
  28. Synthesis and crystal structure of 3-(4,5-dihydroisoxazol-3-yl)-2-methyl-4-(methylsulfonyl)benzoic acid, C12H13NO5S
  29. The crystal structure of hexaaquamagnesium(II) bis-3-(1,2,3,4-tetrahydrobenzo[4,5]imidazo[1,2-α]pyridin-1-yl)benzoate, C36H42N4O10Mg
  30. Crystal structure of 4-formyl-2-methoxyphenyl 2-acetoxybenzoate, C17H14O6
  31. Crystal structure of poly[octakis(μ-oxido)-tris(μ-1,1′-[[1,1′-biphenyl]-4,4′-diylbis(methylene)]bis(1H-imidazole))-tetrakis(oxido)-tetra-vanadium-dimanganese(II)dihydrate], C30H29MnN6O7V2
  32. Crystal structure of 4,8a-bis(4-chlorophenyl)-1,5,6-tris(4-fluorobenzyl)-1,4,4a,4b,5,6,8a,8b-octahydrocyclobuta[1,2-b:3,4-c′]dipyridine-3,8-dicarbonitrile, C45H33Cl2F3N4
  33. Crystal structure of benzo[d][1,3]dioxol-5-ylmethyl 2-(6-methoxynaphthalen-2-yl)propanoate, C22H20O5
  34. Crystal structure of N-benzoyl-N-phenylhydroxylaminato-dicarbonylrhodium(I), [Rh(BNA)CO2]
  35. The crystal structure of N-(2-((2-methoxynaphthalen-1-yl)ethynyl)phenyl)-4-methylbenzenesulfonamide, C26H21NO3S
  36. The crystal structure of methyl ((4-aminobenzyl)sulfonyl)-d-prolinate, C13H18N2O4S
  37. The crystal structure of dichlorido-(N-isopropyl-N-(pyridin-2-ylmethyl)propan-2-amine-κ 2 N, N′)palladium(II), C12H20N2PdCl2
  38. Crystal structure of poly[(μ 2-5-hydroxyisophthalato-κ4 O,O′:O″,O‴)-(μ 2-1,4-bis(2-methylimidazolyl)-1-butene-N:N′)nickel(II)], C20H20NiN4O5
  39. The crystal structure of {hexakis(1-methyl-1H-imidazole-κ 1 N)cobalt(II)}(μ 2-oxido)-hexaoxido-dimolybdenum(VI)— 1-methyl-1H-imidazole (1/2), C32H48CoMo2N16O7
  40. Synthesis, crystal structure and nonlinear optical property of 1-((propan-2-ylideneamino)oxy)propan-2-yl-4-methylbenzenesulfonate, C13H19O4NS
  41. The crystal structure of N,N-(ethane-1,1-diyl)dibenzamide, C16H16N2O2
  42. Crystal structure of 1-(4-bromophenyl)-3-(diphenylphosphoryl)-3-hydroxypropan-1-one, C21H18BrO3P
  43. The crystal structure of fac-tricarbonyl(bis(3,5-dimethyl-4H-pyrazole)-κ1 N)-((nitrato)-κ1 O)-rhenium(I)— 3,5-dimethyl-4H-pyrazole(1/1), C18H23N7O6Re
  44. The crystal structure of 4′-chloro-griseofulvin: (2S,6′R)-4′,7-dichloro-4,6-dimethoxy-6′-methyl-3H-spiro[benzofuran-2,1′-cyclohexan]-3′-ene-2′,3-dione, C16H14Cl2O5
  45. Crystal structure of tetraethylammonium bicarbonate–1-(diaminomethylene)thiourea(1/1)
  46. Crystal structure of 1-cyclohexyl-4-p-tolyl-1,4-dihydropyridine-3,5-dicarboxylic acid dimethyl ester, C22H27NO4
  47. The crystal structure of catena-poly(μ2-1,4-bis-(1H-imidazol-1-yl)benzene-copper(I)) dichloridocopper(I), {[CuC12H10N4]+[CuCl2]−} n
  48. The crystal structure of propane-1-aminium-2-carbamate, C4H10N2O2
  49. Crystal structure of 5,6,3′,4′,5′-pentamethoxy-flavone dihydrate, C20H24O9
  50. Crystal structure of (E)-N-(2-bromophenyl)-4-(4-(3,5-dimethoxystyryl)phenoxy)pyrimidin-2-amine, C26H22BrN3O3
  51. Crystal structure of methyl (3R)-1-(2-bromo-4-fluorophenyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate hydrochloride hydrate, C19H19BrClFN2O3
  52. The crystal structure of 1-(2-chlorophenyl)-3-(p-tolyl)urea, C14H13ClN2O
  53. The crystal structure of 1-cyclohexyl-3-(p-tolyl)urea, C14H20N2O
  54. Crystal structure of ((benzyl(hydroxy)-amino)(4-chlorophenyl)methyl)-diphenylphosphine oxide, C26H23ClNO2P
  55. The crystal structure of ethyl 3-(1-methyl-1H-indole-2-carbonyl)-2-phenylquinoline-4-carboxylate, C28H22N2O3
  56. The crystal structure of 1,4-bis(1H-imidazol-3-ium-1-yl)benzene dinitrate, C12H12N4 2+·2(NO3 −)
  57. Crystal structure of tris(hexafluoroacetylacetonato-κ2O,O′) bis(triphenylphosphine oxide-κ1O)samarium(III), C51H33F18O8P2Sm
  58. Crystal structure of 1-(4-(dimethylamino)phenyl)-2,3-bis(diphenylphosphoryl)propan-1-one, C35H33NO3P2
  59. Crystal structure of diaqua[bis(μ 2-pyridine 2,6-dicarboxylato) bismuth(III) potassium(I)], C14H10BiKN2O10
  60. Crystal structure of (R)-N, N ′-dimethyl-[1, 1′-binaphthalene]-2, 2′-diamine, C22H20N2
  61. Crystal structure of 1-phenyl-4-(2-furoyl)-3-furyl-1H-pyrazol-5-ol, C18H12N2O4
  62. Crystal structure of bis(14,34-dimethyl[11,21:23,31-terphenyl]-22-yl)diselane, C40H34Se2
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