Home The crystal structure of [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}alaninato]-diphenyl-silicon(IV) – chloroform (1/1), C29H25NO4Si·CHCl3
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The crystal structure of [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}alaninato]-diphenyl-silicon(IV) – chloroform (1/1), C29H25NO4Si·CHCl3

  • Uwe Böhme ORCID logo EMAIL logo and Sabine Fels
Published/Copyright: April 28, 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

C29H25NO4Si·CHCl3, monoclinic, P21/c (no. 14), a = 17.1316(8) Å, b = 10.1173(3) Å, c = 18.2252(8) Å, β =  117.195 ( 3 ) ° , V = 2809.7(2) Å3, Z = 4, R gt (F) = 0.0431, wR ref (F 2) = 0.1050, T = 153 K.

CCDC no.: 2256096

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 prism
Size: 0.33 × 0.25 × 0.13 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 0.41 mm−1
Diffractometer, scan mode: STOE IPDS 2,
θ max, completeness: 27.5°, >99 %
N(hkl)measured , N(hkl)unique, R int: 43,582, 6398, 0.060
Criterion for I obs, N(hkl)gt: I obs > 2σ(I obs), 5352
N(param)refined: 391
Programs: X-RED [1], SHELX [2, 3], ORTEP-3 [4]
Table 2:

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

Atom x y z U iso*/U eq
Si1 0.26915 (3) 0.07087 (5) 0.46704 (3) 0.01644 (11)
O1 0.34140 (8) 0.01134 (12) 0.42679 (7) 0.0202 (3)
O2 0.44570 (9) −0.13470 (13) 0.44274 (8) 0.0254 (3)
O3 0.20677 (8) 0.10764 (13) 0.51919 (7) 0.0218 (3)
N1 0.35954 (9) 0.00980 (14) 0.56762 (8) 0.0169 (3)
C1 0.40348 (11) −0.07246 (17) 0.46952 (10) 0.0183 (3)
C2 0.41860 (11) −0.08735 (17) 0.55767 (10) 0.0177 (3)
H2 0.480941 −0.064901 0.596238 0.021*
C3 0.37773 (11) 0.05492 (17) 0.64205 (10) 0.0182 (3)
C4 0.32019 (12) 0.14396 (17) 0.65510 (10) 0.0198 (3)
C5 0.23540 (12) 0.16870 (18) 0.59194 (10) 0.0200 (3)
C6 0.17745 (13) 0.25088 (19) 0.60467 (11) 0.0246 (4)
H6 0.120055 0.266101 0.561505 0.029*
C7 0.20451 (14) 0.31029 (19) 0.68113 (12) 0.0268 (4)
C8 0.28921 (14) 0.2877 (2) 0.74534 (11) 0.0281 (4)
H8 0.307453 0.329186 0.797372 0.034*
C9 0.34492 (13) 0.20606 (19) 0.73260 (11) 0.0245 (4)
H9 0.401753 0.190143 0.776548 0.029*
O4 0.15459 (11) 0.39373 (16) 0.69988 (10) 0.0385 (4)
C10 0.06749 (15) 0.4210 (3) 0.63776 (15) 0.0413 (5)
H10A 0.069884 0.463766 0.590578 0.062*
H10B 0.038326 0.479879 0.660293 0.062*
H10C 0.034510 0.338147 0.619797 0.062*
C11 0.45960 (12) 0.01428 (17) 0.71633 (10) 0.0203 (3)
C12 0.45315 (13) −0.06245 (19) 0.77695 (11) 0.0251 (4)
H12 0.397428 −0.093282 0.768954 0.030*
C13 0.52796 (13) −0.09383 (19) 0.84893 (11) 0.0272 (4)
H13 0.523491 −0.147539 0.889607 0.033*
C14 0.60902 (13) −0.04697 (19) 0.86150 (11) 0.0278 (4)
H14 0.660042 −0.066731 0.911299 0.033*
C15 0.61554 (13) 0.02883 (19) 0.80125 (12) 0.0268 (4)
H15 0.671346 0.060156 0.809800 0.032*
C16 0.54132 (12) 0.05959 (18) 0.72838 (11) 0.0227 (4)
H16 0.546353 0.111109 0.687167 0.027*
C17 0.39917 (14) −0.22784 (18) 0.57414 (12) 0.0269 (4)
H17A 0.409753 −0.235395 0.631560 0.040*
H17B 0.437518 −0.289499 0.564308 0.040*
H17C 0.337724 −0.249169 0.537172 0.040*
C18 0.17441 (12) −0.03388 (17) 0.39072 (10) 0.0198 (3)
C19 0.08810 (13) −0.0086 (2) 0.37608 (12) 0.0291 (4)
H19 0.077630 0.061093 0.405398 0.035*
C20 0.01717 (14) −0.0820 (2) 0.32011 (14) 0.0379 (5)
H20 −0.040591 −0.061095 0.311094 0.045*
C21 0.03068 (14) −0.1853 (2) 0.27762 (13) 0.0347 (5)
H21 −0.017305 −0.237300 0.240471 0.042*
C22 0.11488 (15) −0.2119 (2) 0.28986 (12) 0.0316 (4)
H22 0.124744 −0.282441 0.260693 0.038*
C23 0.18530 (13) −0.13633 (19) 0.34450 (11) 0.0262 (4)
H23 0.242364 −0.154679 0.350656 0.031*
C24 0.27989 (12) 0.24721 (18) 0.44063 (10) 0.0201 (3)
C25 0.20765 (13) 0.3326 (2) 0.41217 (12) 0.0285 (4)
H25 0.153673 0.301245 0.408421 0.034*
C26 0.21290 (16) 0.4616 (2) 0.38933 (13) 0.0369 (5)
H26 0.162367 0.516593 0.368516 0.044*
C27 0.29141 (16) 0.5104 (2) 0.39676 (13) 0.0365 (5)
H27 0.295200 0.599261 0.381757 0.044*
C28 0.36459 (15) 0.4295 (2) 0.42613 (12) 0.0311 (4)
H28 0.419021 0.463349 0.432383 0.037*
C29 0.35852 (12) 0.29867 (18) 0.44653 (11) 0.0228 (4)
H29 0.408647 0.243149 0.464808 0.027*
C30Aa 0.8465 (6) 0.1894 (11) 0.4388 (6) 0.019 (3)
H30Aa 0.832235 0.125688 0.472825 0.023*
Cl1Aa 0.8367 (7) 0.3505 (11) 0.4689 (10) 0.060 (3)
Cl2Aa 0.9530 (5) 0.1579 (8) 0.4538 (6) 0.0628 (13)
Cl3Aa 0.7749 (5) 0.1634 (10) 0.3362 (5) 0.0638 (18)
C30Bb 0.8507 (6) 0.1954 (11) 0.4353 (6) 0.059 (4)
H30Bb 0.843096 0.118517 0.465864 0.071*
Cl1Bb 0.8384 (4) 0.3416 (5) 0.4818 (5) 0.0441 (8)
Cl2Bb 0.9551 (3) 0.1860 (12) 0.4424 (5) 0.0827 (16)
Cl3Bb 0.7710 (2) 0.1843 (6) 0.3329 (2) 0.0541 (9)

  1. aOccupancy: 0.38 (3), boccupancy: 0.62 (3).

1 Source of materials

The O,N,O′-ligand was prepared from 2-hydroxy-4-methoxybenzophenone and L-alanine according to a literature procedure [5].

In a representative experiment 1.2 g (4.0 mmol) 2-{(E)-[(2-hydroxy-4-methoxyphenyl)(phenyl)methylidene]amino}propanoic acid were placed in a Schlenk flask under argon and solved in 40 mL dry THF. To this solution were added 0.9 g (8.9 mmol) triethylamine and cooled to 0 °C. 1.0 g (4.0 mmol) SiCl2Ph2 were diluted with 20 mL THF and added via a dropping funnel to the solution. The mixture was stirred for 14 h at room temperature. The white precipitate of triethylammonium chloride was separated by filtration. The filtrate was reduced in a vacuum and the pale yellow residue was solved in 20 mL chloroform. The resulting suspension was filtered again. 2 mL n-hexane were added to the filtrate and the solution was stored for 5 months at 8 °C. Pale yellow crystals suitable for crystal structure analysis were obtained. Yield: 1.7 g (71 %). M.pt: 383 K.

1 H NMR (CDCl3, 400 MHz) δ = 1.08 (d, 3 J HH  = 8 Hz, 3H, CH3 at C17), 3.72 (s, 3H, CH3 at C10), 4.21 (d, 3 J HH  = 8 Hz, 1H, CH at C2), 6.16–7.99 (m, 18 H, Ph). 13 C NMR (CDCl3, 100 MHz) δ = 19.8 (C17), 55.9 (C10), 59.4 (C2), 102.9, 110.1, 112.9, 125.9, 127.5, 129.1, 129.3, 130.5, 136.7, 137.3, 138.0, 139.8 (12 × aromatic C), 167.0, 168.8, 172.6 (C3, C5, C7), 178.1 (C1). 29 Si NMR (CDCl3, 80 MHz) δ = −99.2 ppm.

IR (KBr, cm−1) 429.8 (m), 445.3 (w), 491.0 (s), 520.1 (s), 531.5(s), 575.8 (w), 618.9 (m), 627.8 (m), 665.1 (m), 701.7 (s), 742.9 (s), 755.9 (s), 811.0 (s), 837.5 (m), 870.2 (m), 914.9 (m), 962.4 (m), 978.3 (m), 999.3 (m), 1028.8 (m), 1073.9 (m), 1094.0 (m), 1109.5 (m), 1130.8 (s), 1173.9 (m), 1219.8 (s), 1249.2 (m), 1278.7 (vs), 1328.0 (s), 1370.9 (s), 1382.9 (s), 1428.8 (m), 1457.1 (m), 1486.9 (s), 1509.9 (vs), 1566.6 (vs), 1609.8 (vs), 1714.2 (vs), 2845.2 (w), 2932.3 (w), 3004.6 (m), 3046.3 (m), 3392.6 (w).

2 Experimental details

The carbon-bound H atoms were geometrically placed (C–H = 0.95–1.0 Å) and refined as riding atoms with U iso (H) = 1.2–1.5 U eq (C). The disordered chloroform molecule was refined with a split atom model. Site occupation factors for parts A and B were refined to 0.38/0.62, respectively. Restraints were applied in order to keep both parts of the disordered chloroform to sensible values regarding bond lengths and anisotropic displacement parameters.

3 Comment

Tridentate O,N,O-chelate ligands based on Schiff bases are used frequently for the generation of pentacoordinated silicon complexes [6]. We wanted to explore the ability of the Schiff base 2-{(E)-[(2-hydroxy-4-methoxyphenyl)(phenyl)methylidene]amino}propanoic acid to be a tridentate ligand in pentacoordinate silicon complexes. This ligand has not been used so far for the generation of any coordination compound. Related silicon complexes contain Schiff base ligands derived from salicyl aldehyde [7], acetophenone [8] or naphthyl aldehyde [9].

The asymmetric unit of the title structure contains one molecule [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}alaninato]-diphenyl-silicon(IV) and one chloroform molecule. The molecular structure is shown in the figure (50 % displacement ellipsoids) with a silicon complex and a disordered chloroform in the asymmetric unit. The centrosymmetric space group P21/c indicates that both enantiomers of the amino acid derivative are present in the crystal under investigation. The batch product shows no rotation of polarized light ([α]20 D  = 0°). L-alanine has been used for the synthesis of the Schiff-base ligand. Racemization of the ligand system must have occured during complex formation. This was already observed in other cases [7, 10].

The silicon complex features a pentacoordinated silicon atom, coordinated by carboxyl–O1, phenoxy–O3, imine–N1 and two carbon atoms from phenyl groups (C18 and C24). The coordination geometry of the pentacoordinate silicon atom was analysed with the parameter τ. This is defined as τ = (β − α)/60° with β as largest and α as the second largest angle at the central atom [11]. If τ = 0 it is a perfect square pyramid, while τ = 1 indicates a perfect trigonal bipyramid. Largest angle at the silicon atom is O1–Si1–O3 with 170.17 ( 6 ) ° and second largest N1–Si1–C18 with 125.15 ( 7 ) ° . This gives a parameter τ = 0.75, which corresponds to a distorted trigonal bipyramid. The apical positions are occupied by O1 and O3 of the tridentate ligand, while the atoms N1, C18, and C24 represent the atoms in the trigonal plane.

The bond Si–O1 [1.806(2) Å] is longer than the bond Si1–O3 [1.764(2) Å]. This can be explained with the carboxyl type oxygen atom O1 and the electronegative character of the phenyl bound O3. The bond lengths Si1–N1 and Si–C are similar as in comparable pentacoordinate silicon complexes [8, 9, 12, 13].

Two closely related complexes with the [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}glycinato] ligand have been reported [14, 15]. This Schiff-base ligand lacks the methyl group at C2 with a glycinato instead of alaninato group.

Corresponding author: Uwe Böhme, Institut für Anorganische Chemie, Technische Universität Bergakademie Freiberg, Leipziger Str. 29 09599 Freiberg, Germany, E-mail:

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

  2. Research funding: TU Bergakademie Freiberg (Freiberg, Germany), Open Access Funding by the Publication Fund of the TU Bergakademie Freiberg.

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

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Received: 2023-03-09
Accepted: 2023-04-13
Published Online: 2023-04-28
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.

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  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-2023-0109
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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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