Home The crystal structure of (1E,2E)-1,2-bis(quinolin-2-ylmethylene)hydrazine, C20H14N4
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The crystal structure of (1E,2E)-1,2-bis(quinolin-2-ylmethylene)hydrazine, C20H14N4

  • Fuguang Liao , Shuhao Yuan , Weifeng Nie , Zirong Yi , Qian Zhang , Shiyu Yan and Ying Cui ORCID logo EMAIL logo
Published/Copyright: May 5, 2023
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 238 Issue 4

Abstract

C20H14N4, monoclinic, P21/c (no. 14), a = 13.4569(16) Å, b = 4.7592(5) Å, c = 11.9902(13) Å, β = 94.914(2)°, V = 765.08(15) Å3, Z = 2, R gt (F) = 0.0333, wR ref (F 2) = 0.0935, T = 296(2) K.

CCDC no.: 2235011

The molecular 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: Yellow block
Size: 0.23 × 0.18 × 0.18 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 0.08 mm−1
Diffractometer, scan mode: Bruker APEX-II, φ and ω
θ max, completeness: 26.0°, >99%
N(hkl)measured, N(hkl)unique, R int: 4014, 1491, 0.017
Criterion for I obs, N(hkl)gt: I obs > 2 σ(I obs), 1214
N(param)refined: 110
Programs: Bruker [1], SHELX [2, 3], WinGX/ORTEP [4]
Table 2:

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

Atom x y Z U iso*/U eq
N1 0.71688 (7) 0.5785 (2) 0.53794 (7) 0.0351 (3)
N2 0.51847 (7) 0.0952 (2) 0.54198 (7) 0.0368 (3)
C1 0.64312 (8) 0.4502 (2) 0.58372 (9) 0.0321 (3)
C4 0.75029 (8) 0.8437 (2) 0.71160 (9) 0.0339 (3)
C9 0.77066 (8) 0.7750 (2) 0.60048 (9) 0.0336 (3)
C10 0.59112 (8) 0.2385 (2) 0.51166 (9) 0.0353 (3)
H10 0.612165 0.207885 0.440790 0.042*
C3 0.66924 (9) 0.7056 (3) 0.75539 (9) 0.0371 (3)
H3 0.652446 0.748054 0.827127 0.044*
C2 0.61578 (8) 0.5109 (3) 0.69284 (9) 0.0358 (3)
H2 0.562270 0.419177 0.721018 0.043*
C5 0.81048 (9) 1.0461 (3) 0.77144 (10) 0.0431 (3)
H5 0.798401 1.091122 0.844537 0.052*
C8 0.84903 (9) 0.9154 (3) 0.55226 (11) 0.0448 (3)
H8 0.862562 0.873956 0.479291 0.054*
C6 0.88603 (9) 1.1756 (3) 0.72277 (12) 0.0504 (4)
H6 0.925425 1.307545 0.763066 0.061*
C7 0.90491 (9) 1.1114 (3) 0.61222 (12) 0.0514 (4)
H7 0.956029 1.203573 0.579571 0.062*

1 Source of material

All chemicals were purchased from commercial sources and used as received without further purification. The quinoline-2-carbaldehyde (20 mmol, 3.141 g) and hydrazine hydrate (10 mmol, 0.5 g) were dissolved in MeOH (100 mL). The mixture was refluxed for 4 h. Finally, the title crystal was precipitated by controlling slowly cooling.

2 Experimental details

All H-atoms bonded to C atoms were placed geometrically and refined using a riding model with common isotropic displacement factors U iso(H) = 1.2 or 1.5 U eq (parent C-atom).

3 Comment

The Schiff bases of quinoline have important applications in metal ion detection, biological detection and fluorescence analysis [5], [6], [7]. 1,2–Bis(quinolin-2-ylmethylene)hydrazine belongs to a special class of Schiff bases with fluorescent properties which have important applications in the field of mercury ion detection [8]. So, the crystal structure of the title compound is of great significance to studying the application.

Single-crystal structure analysis revealed that the title compound crystallized in the monoclinic space group P21/c. The title molecule in the crystal structure owns inversion symmetry. Bond lengths and angles are all in the expected ranges. The title molecule exhibits an E configuration. The bond length of C10=N2 is 1.2706(14) Å, which is similar to those reported in the literature [9–12]. The bond length of C1–C10 is 1.4654(15) Å, which is shorter than normal C–C single bonds (1.54 Å), but is similar to those reported in the literature [8, 13].

Corresponding author: Ying Cui, School of Chemistry and Materials Science, Hengyang Normal University, Hengyang, Hunan 421008, China, E-mail:

Funding source: Science Foundation of Hengyang Normal University of China

Award Identifier / Grant number: 2021QD03

Funding source: Hengyang Normal University Industrial Supported Project

Award Identifier / Grant number: HXKY202127

Funding source: Foundation of Hunan Engineering Research Center for Monitoring and Treatment of Heavy Metals Pollution in the Upper Reaches of Xiangjiang River

Award Identifier / Grant number: 2021HSKFJJ027

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

  2. Research funding: This work was supported by the Science Foundation of Hengyang Normal University of China (No. 2021QD03), Hengyang Normal University Industrial Supported Project (No. HXKY202127), and Foundation of Hunan Engineering Research Center for Monitoring and Treatment of Heavy Metals Pollution in the Upper Reaches of Xiangjiang River (No. 2021HSKFJJ027).

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

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Received: 2023-02-23
Accepted: 2023-03-14
Published Online: 2023-05-05
Published in Print: 2023-08-28

© 2023 the author(s), published by De Gruyter, Berlin/Boston

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

Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. Crystal structure of a polymorph of potassium picrate, C6H2KN3O7
  4. The crystal structure of (1E,2E)-1,2-bis(quinolin-2-ylmethylene)hydrazine, C20H14N4
  5. 5-Amino-2-chloro-4-fluoro-N-(N-isopropyl-N-methylsulfamoyl) benzamide, C11H15O3ClFN3S
  6. Crystal structure of trans-N 1,N 8-bis(2-cyanoethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H42N6
  7. The crystal structure of [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}alaninato]-diphenyl-silicon(IV) – chloroform (1/1), C29H25NO4Si·CHCl3
  8. Crystal structure of tetracarbonyl-{μ-[N-(diphenylphosphanyl)-N,P,P-triphenylphosphinous amide]}-bis[μ-(phenylmethanethiolato)]diiron (Fe–Fe), C48H39Fe2NO4P2S2
  9. Crystal structure of baryte from Mine du Pradet (France)
  10. The crystal structure of [(2,2′-bipyridine-6-carboxylato-κ3 N,N,O)-(6-phenylpyridine-2-carboxylate-κ2 N,O)copper(II)] monohydrate, C23H17N3O5Cu
  11. Crystal structure of bis(μ-benzeneselenolato)-(μ-[N-benzyl-N-(diphenylphosphanyl)-P,P-diphenylphosphinous amide])-tetracarbonyl diiron (Fe–Fe), C47H37Fe2NO4P2Se2
  12. The crystal structure of diaqua-methanol-κ1 O- (3-thiophenecarboxylato-κO)-(2,2′-dipyridyl-κ2 N,N′)manganese(II) 3-thiophenecarboxylate, C21H22N2O7S2Mn
  13. Crystal structure of catena-poly[tetrakis(butyl)-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O:O,O′,N-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O,N,O′:N′-ditin(IV)], C34H50N6O6Sn2
  14. Crystal structure of 4-chloro-N′-[(1E)-(2-nitrophenyl)methylidene]benzohydrazide, C14H10ClN3O3
  15. The crystal structure of 3-(1′-deoxy-3′,5′-O-dibenzy-β-d-ribosyl)adenine dichloromethane solvate, C49H52Cl2N10O6
  16. The crystal structure of (Z)-4-amino-N′-(1-(o-tolyl)ethylidene)benzohydrazide, C16H17N3O
  17. The co-crystal structure of etoricoxib–phthalic acid (1/1), C18H15ClN2O2S·C8H6O4
  18. Crystal structure of (glycinto-κ 2 O,N ′)-[5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ 4 N,N ′,N ″,N ‴]nickel(II) perchlorate monohydrate C18H42ClN5NiO7
  19. The crystal structure of catena-poly[bis(1-ethylimidazole-k1 N)-(μ 2-benzene-1-carboxyl-3,5-dicarboxylato-κ 2 O, O′)zinc(II)], C19H20N4O6Zn
  20. Crystal structure of 3-(thiazol-2-ylcarbamoyl)-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid, C11H12N2O4S
  21. Rietveld structure analysis of keatite, a rare, metastable SiO2 polymorph
  22. Crystal structure of catena-poly[(μ2-isophthalato-k3 O,O′:O″)(4-(4-pyridyl)-2,5-dipyrazylpyridine-k3 N,N′,N″)cobalt(II)] trihydrate C26H22N6O7Co1
  23. Crystal structure of 3,5–di-O-benzoyl-1,2-O-isopropylidene-α–D-ribose, C22H22O7
  24. The crystal structure of fac-tricarbonyl(6-bromo-2,2-bipyridine-κ2 N,N)-(nitrato-κO)rhenium(I), C13H7BrN3O6Re
  25. The crystal structure of (E)-N′-(4-hydroxy-3-methoxybenzylidene)-2-naphthohydrazide monohydrate, C19H18N2O4
  26. The crystal structure of 5,5′-diselanediyl-bis(2-hydroxybenzaldehyde), C14H10O4Se2
  27. The crystal structure of catena-poly[diaqua-m2-dicyanido-κ2 C:N-dicyanido-κ1 C-bis(4-(pyridin-4-yl)benzaldehyde-κ1N)iron(II)-platinum(II), C28H22N6O4PtFe
  28. Redetermination of the crystal structure of 5,14-dihydro-6,17-dimethyl-8,15-diphenyldibenzo(b,i)(1,4,8,11)tetra-azacyclotetradecine, C32H28N4
  29. Crystal structure of poly[(μ3-2-(3,5-dicarboxyphenyl) benzimidazole-6-carboxylato-κ4O:O:O′:O″)lead(II)] monohydrate, C16H10N2O7Pb
  30. The crystal structure of fac-tricarbonyl(2-pyridin-2-yl-quinoline-κ2 N,N′)-(pyrazole-κN)rhenium(I)nitrate, C20H14N4O3ReNO3
  31. Crystal structure of dibromo-dicarbonyl-bis(tricyclohexylphosphine)-osmium(II) dichloromethane solvate, C38H66Br2O2OsP2
  32. Crystal structure of poly[bis(μ 2-2,6-bis(1-imidazoly)pyridine-κ 2 N:N′)copper(II)] diperchlorate dihydrate, C22H22Cl2CuN10O10
  33. The crystal structure of fac-tricarbonyl(N-benzoyl-N,N-cyclohexylmethylcarbamimidothioato-κ2 S,O)-(pyridine-κN)rhenium(I), C23H24N3O4ReS
  34. Crystal structure of (E)-7-fluoro-2-(4-fluorobenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C17H12F2O
  35. Synthesis and crystal structure of 1-((3R,10S,13S, 17S)-3-((2-methoxyphenyl)amino)-10,13-dimethylhexadecahydro-1H-cyclopenta[α]phenanthren-17-yl)ethan-1-one, C28H41NO2
  36. The crystal structure of fac-tricarbonyl((pyridin-2-yl)methanamino-κ2 N,N′)-((pyridin-2-yl)methanamino-κN)rhenium(I) nitrate, C15H16O3N4Re
  37. The crystal structure of (1-(pyridin-2-yl)-N-(pyridin-2-ylmethyl)-N-((1-(4-vinylbenzyl)-1H-benzo[d]imidazol-2-yl)methyl)methanamine-κ 4 N,N′,N″,N‴)tris(nitrato-kO,O′)-erbium(III), C29H27ErN8O9
  38. Crystal structure of tetracene-5,12-dione, C18H10O2
  39. Crystal structure of (3R,3aS,6R,6aR)-6-hexyl-3-methyltetrahydrofuro[3,4-b]furan-2,4-dione, C13H20O4
  40. The crystal structure of N′1,N′3-bis((E)-thiophen-2-ylmethylene)isophthalohydrazide monohydrate, C18H16N4O3S2
  41. Crystal structure of methyl ((4-aminobenzyl)sulfonyl)-L-prolinate, C13H18N2O4S
  42. Crystal structure of (E)-3-(3-methoxybenzylidene)benzofuran-2(3H)-one, C16H12O3
  43. Synthesis and crystal structure (E)-1-(4-bromo-2-hydroxyphenyl)-3-(dimethylamino)prop-2-en-1-one, C11H12BrNO2
  44. Synthesis and crystal structure of (S,E)-4-hydroxy-3-(2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylenedecahydro-1H-naphtho[2,1-d][1,3]dioxin-7-yl)ethylidene)dihydrofuran-2(3H)-one, C23H34O5
  45. The crystal structure of N,N′-(1,2-phenylene)bis (2-((2-oxopropyl)selanyl)benzamide), C26H24N2O4Se2
  46. The crystal structure of 1-ethyl-2-nitro-imidazole oxide, C5H7N3O3
  47. The crystal structure of 2-(2-fluorophenyl)naphtho[2,1-d]thiazole, C17H10FNS
  48. Crystal structure of (E)-2,4-di-tert-butyl-6-(((2-fluorophenyl)imino) methyl)phenol, C21H26FNO
  49. Synthesis and crystal structure of 3-methyl-2-(methylthio)-4H-chromen-4-one, C12H12O2S
  50. Crystal structure of dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-5,10-dione, C14H4O2S4
  51. The crystal structure of dimethyl 2,2ʹ-((adamantane-1,3-diylbis(4,1-phenylene)) bis(oxy))diacetate, C28H32O6
  52. The crystal structure of N-(6-chloro-2-methyl-2H-indazol-5-yl)acetamide, C10H10ClN3O
  53. Crystal structure of triaqua-(5-bromoisophthalato-κ1 O)-(2,2′-bipyridine-κ2 N:N′)nickel(II) hydrate, C18H19BrN2NiO8
  54. The crystal structure of 2-amino-4-carboxypyridin-1-ium perchlorate, C6H7ClN2O6
  55. The crystal structure of catena-poly[5-aminonicotinic acid-k1 N-m2-bromido-copper(I)], Cu(C6N2H6O2)Br
  56. The crystal structure of 2,2-bis(3-methoxyphenyl)-1-tosyl-1,2-dihydro- 2λ4,3λ4  -[1,3,2]diazaborolo[4,5,1-ij]quinoline - dichloromethane (1/1)
  57. The crystal structure of catena-poly[bis(6-phenylpyridine-2-carboxylato-κ2 N,O)-(μ2-4,4′-bipyridne-κ2 N:N)cadmium(II)], C34H24N4O4Cd
  58. The crystal structure of 5,7-dinitropyrazolo[5,1-b]quinazolin-9(4H)-one, C10H5N5O5
  59. Crystal structure of rac-1,8-bis(2-carbamoylethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H46N6O2
  60. The crystal structure of (E)-N ′-(2-bromobenzylidene)-2-naphthohydrazide, C36H26Br2N4O2
  61. The crystal structure of 5-nitronaphthoquinone, C10H5NO4
  62. The crystal structure of (S, R p )-4–benzhydrylideneamino-12-(4-tert-butyl oxazolin-2-yl)[2.2]paracyclophane, C36H36N2O
  63. Synthesis and crystal structure of 2-(2-oxo-2-(o-tolyl)ethyl)-4H-chromen-4-one, C18H14O3
  64. Crystal structure of 2-(thiazol-2-yl)hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione, C11H10N2O3S
  65. Crystal structure of N-(diaminomethylene)-1-(dimethylamino)-1-iminiomethanaminium dichloride, C4H13Cl2N5
  66. Crystal structure of poly[(μ3-3, 5-dichloro-2-hydroxy-benzoato-κ4 Cl,O:O′:O″) silver(I)], C7H3AgCl2O3
  67. The crystal structure of tetrakis(1-isopropylimidazole-κ1 N)-[μ2- imidazole-4,5-dicarboxylato-κ4 O,N,O′,N′)]- trioxido-divanadium, C29H41N10O7V2
  68. Crystal structure of catena-[(μ3-bromido)-(1H-1,2,4-triazol-1-yl)benzoato-κ1 N)copper(I)], C9H7BrCuN3O2
  69. The crystal structure of (E)-4-fluoro-N′-(1-(2-hydroxyphenyl)propylidene)benzohydrazide, C16H15FN2O2
https://doi.org/10.1515/ncrs-2023-0089
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Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. Crystal structure of a polymorph of potassium picrate, C6H2KN3O7
  4. The crystal structure of (1E,2E)-1,2-bis(quinolin-2-ylmethylene)hydrazine, C20H14N4
  5. 5-Amino-2-chloro-4-fluoro-N-(N-isopropyl-N-methylsulfamoyl) benzamide, C11H15O3ClFN3S
  6. Crystal structure of trans-N 1,N 8-bis(2-cyanoethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H42N6
  7. The crystal structure of [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}alaninato]-diphenyl-silicon(IV) – chloroform (1/1), C29H25NO4Si·CHCl3
  8. Crystal structure of tetracarbonyl-{μ-[N-(diphenylphosphanyl)-N,P,P-triphenylphosphinous amide]}-bis[μ-(phenylmethanethiolato)]diiron (Fe–Fe), C48H39Fe2NO4P2S2
  9. Crystal structure of baryte from Mine du Pradet (France)
  10. The crystal structure of [(2,2′-bipyridine-6-carboxylato-κ3 N,N,O)-(6-phenylpyridine-2-carboxylate-κ2 N,O)copper(II)] monohydrate, C23H17N3O5Cu
  11. Crystal structure of bis(μ-benzeneselenolato)-(μ-[N-benzyl-N-(diphenylphosphanyl)-P,P-diphenylphosphinous amide])-tetracarbonyl diiron (Fe–Fe), C47H37Fe2NO4P2Se2
  12. The crystal structure of diaqua-methanol-κ1 O- (3-thiophenecarboxylato-κO)-(2,2′-dipyridyl-κ2 N,N′)manganese(II) 3-thiophenecarboxylate, C21H22N2O7S2Mn
  13. Crystal structure of catena-poly[tetrakis(butyl)-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O:O,O′,N-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O,N,O′:N′-ditin(IV)], C34H50N6O6Sn2
  14. Crystal structure of 4-chloro-N′-[(1E)-(2-nitrophenyl)methylidene]benzohydrazide, C14H10ClN3O3
  15. The crystal structure of 3-(1′-deoxy-3′,5′-O-dibenzy-β-d-ribosyl)adenine dichloromethane solvate, C49H52Cl2N10O6
  16. The crystal structure of (Z)-4-amino-N′-(1-(o-tolyl)ethylidene)benzohydrazide, C16H17N3O
  17. The co-crystal structure of etoricoxib–phthalic acid (1/1), C18H15ClN2O2S·C8H6O4
  18. Crystal structure of (glycinto-κ 2 O,N ′)-[5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ 4 N,N ′,N ″,N ‴]nickel(II) perchlorate monohydrate C18H42ClN5NiO7
  19. The crystal structure of catena-poly[bis(1-ethylimidazole-k1 N)-(μ 2-benzene-1-carboxyl-3,5-dicarboxylato-κ 2 O, O′)zinc(II)], C19H20N4O6Zn
  20. Crystal structure of 3-(thiazol-2-ylcarbamoyl)-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid, C11H12N2O4S
  21. Rietveld structure analysis of keatite, a rare, metastable SiO2 polymorph
  22. Crystal structure of catena-poly[(μ2-isophthalato-k3 O,O′:O″)(4-(4-pyridyl)-2,5-dipyrazylpyridine-k3 N,N′,N″)cobalt(II)] trihydrate C26H22N6O7Co1
  23. Crystal structure of 3,5–di-O-benzoyl-1,2-O-isopropylidene-α–D-ribose, C22H22O7
  24. The crystal structure of fac-tricarbonyl(6-bromo-2,2-bipyridine-κ2 N,N)-(nitrato-κO)rhenium(I), C13H7BrN3O6Re
  25. The crystal structure of (E)-N′-(4-hydroxy-3-methoxybenzylidene)-2-naphthohydrazide monohydrate, C19H18N2O4
  26. The crystal structure of 5,5′-diselanediyl-bis(2-hydroxybenzaldehyde), C14H10O4Se2
  27. The crystal structure of catena-poly[diaqua-m2-dicyanido-κ2 C:N-dicyanido-κ1 C-bis(4-(pyridin-4-yl)benzaldehyde-κ1N)iron(II)-platinum(II), C28H22N6O4PtFe
  28. Redetermination of the crystal structure of 5,14-dihydro-6,17-dimethyl-8,15-diphenyldibenzo(b,i)(1,4,8,11)tetra-azacyclotetradecine, C32H28N4
  29. Crystal structure of poly[(μ3-2-(3,5-dicarboxyphenyl) benzimidazole-6-carboxylato-κ4O:O:O′:O″)lead(II)] monohydrate, C16H10N2O7Pb
  30. The crystal structure of fac-tricarbonyl(2-pyridin-2-yl-quinoline-κ2 N,N′)-(pyrazole-κN)rhenium(I)nitrate, C20H14N4O3ReNO3
  31. Crystal structure of dibromo-dicarbonyl-bis(tricyclohexylphosphine)-osmium(II) dichloromethane solvate, C38H66Br2O2OsP2
  32. Crystal structure of poly[bis(μ 2-2,6-bis(1-imidazoly)pyridine-κ 2 N:N′)copper(II)] diperchlorate dihydrate, C22H22Cl2CuN10O10
  33. The crystal structure of fac-tricarbonyl(N-benzoyl-N,N-cyclohexylmethylcarbamimidothioato-κ2 S,O)-(pyridine-κN)rhenium(I), C23H24N3O4ReS
  34. Crystal structure of (E)-7-fluoro-2-(4-fluorobenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C17H12F2O
  35. Synthesis and crystal structure of 1-((3R,10S,13S, 17S)-3-((2-methoxyphenyl)amino)-10,13-dimethylhexadecahydro-1H-cyclopenta[α]phenanthren-17-yl)ethan-1-one, C28H41NO2
  36. The crystal structure of fac-tricarbonyl((pyridin-2-yl)methanamino-κ2 N,N′)-((pyridin-2-yl)methanamino-κN)rhenium(I) nitrate, C15H16O3N4Re
  37. The crystal structure of (1-(pyridin-2-yl)-N-(pyridin-2-ylmethyl)-N-((1-(4-vinylbenzyl)-1H-benzo[d]imidazol-2-yl)methyl)methanamine-κ 4 N,N′,N″,N‴)tris(nitrato-kO,O′)-erbium(III), C29H27ErN8O9
  38. Crystal structure of tetracene-5,12-dione, C18H10O2
  39. Crystal structure of (3R,3aS,6R,6aR)-6-hexyl-3-methyltetrahydrofuro[3,4-b]furan-2,4-dione, C13H20O4
  40. The crystal structure of N′1,N′3-bis((E)-thiophen-2-ylmethylene)isophthalohydrazide monohydrate, C18H16N4O3S2
  41. Crystal structure of methyl ((4-aminobenzyl)sulfonyl)-L-prolinate, C13H18N2O4S
  42. Crystal structure of (E)-3-(3-methoxybenzylidene)benzofuran-2(3H)-one, C16H12O3
  43. Synthesis and crystal structure (E)-1-(4-bromo-2-hydroxyphenyl)-3-(dimethylamino)prop-2-en-1-one, C11H12BrNO2
  44. Synthesis and crystal structure of (S,E)-4-hydroxy-3-(2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylenedecahydro-1H-naphtho[2,1-d][1,3]dioxin-7-yl)ethylidene)dihydrofuran-2(3H)-one, C23H34O5
  45. The crystal structure of N,N′-(1,2-phenylene)bis (2-((2-oxopropyl)selanyl)benzamide), C26H24N2O4Se2
  46. The crystal structure of 1-ethyl-2-nitro-imidazole oxide, C5H7N3O3
  47. The crystal structure of 2-(2-fluorophenyl)naphtho[2,1-d]thiazole, C17H10FNS
  48. Crystal structure of (E)-2,4-di-tert-butyl-6-(((2-fluorophenyl)imino) methyl)phenol, C21H26FNO
  49. Synthesis and crystal structure of 3-methyl-2-(methylthio)-4H-chromen-4-one, C12H12O2S
  50. Crystal structure of dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-5,10-dione, C14H4O2S4
  51. The crystal structure of dimethyl 2,2ʹ-((adamantane-1,3-diylbis(4,1-phenylene)) bis(oxy))diacetate, C28H32O6
  52. The crystal structure of N-(6-chloro-2-methyl-2H-indazol-5-yl)acetamide, C10H10ClN3O
  53. Crystal structure of triaqua-(5-bromoisophthalato-κ1 O)-(2,2′-bipyridine-κ2 N:N′)nickel(II) hydrate, C18H19BrN2NiO8
  54. The crystal structure of 2-amino-4-carboxypyridin-1-ium perchlorate, C6H7ClN2O6
  55. The crystal structure of catena-poly[5-aminonicotinic acid-k1 N-m2-bromido-copper(I)], Cu(C6N2H6O2)Br
  56. The crystal structure of 2,2-bis(3-methoxyphenyl)-1-tosyl-1,2-dihydro- 2λ4,3λ4  -[1,3,2]diazaborolo[4,5,1-ij]quinoline - dichloromethane (1/1)
  57. The crystal structure of catena-poly[bis(6-phenylpyridine-2-carboxylato-κ2 N,O)-(μ2-4,4′-bipyridne-κ2 N:N)cadmium(II)], C34H24N4O4Cd
  58. The crystal structure of 5,7-dinitropyrazolo[5,1-b]quinazolin-9(4H)-one, C10H5N5O5
  59. Crystal structure of rac-1,8-bis(2-carbamoylethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H46N6O2
  60. The crystal structure of (E)-N ′-(2-bromobenzylidene)-2-naphthohydrazide, C36H26Br2N4O2
  61. The crystal structure of 5-nitronaphthoquinone, C10H5NO4
  62. The crystal structure of (S, R p )-4–benzhydrylideneamino-12-(4-tert-butyl oxazolin-2-yl)[2.2]paracyclophane, C36H36N2O
  63. Synthesis and crystal structure of 2-(2-oxo-2-(o-tolyl)ethyl)-4H-chromen-4-one, C18H14O3
  64. Crystal structure of 2-(thiazol-2-yl)hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione, C11H10N2O3S
  65. Crystal structure of N-(diaminomethylene)-1-(dimethylamino)-1-iminiomethanaminium dichloride, C4H13Cl2N5
  66. Crystal structure of poly[(μ3-3, 5-dichloro-2-hydroxy-benzoato-κ4 Cl,O:O′:O″) silver(I)], C7H3AgCl2O3
  67. The crystal structure of tetrakis(1-isopropylimidazole-κ1 N)-[μ2- imidazole-4,5-dicarboxylato-κ4 O,N,O′,N′)]- trioxido-divanadium, C29H41N10O7V2
  68. Crystal structure of catena-[(μ3-bromido)-(1H-1,2,4-triazol-1-yl)benzoato-κ1 N)copper(I)], C9H7BrCuN3O2
  69. The crystal structure of (E)-4-fluoro-N′-(1-(2-hydroxyphenyl)propylidene)benzohydrazide, C16H15FN2O2
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