Home Physical Sciences Crystal structure of rac-4,4,4-trifluoro-3-hydroxy-3-methylbutanoic acid, C5H7O2F3
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Crystal structure of rac-4,4,4-trifluoro-3-hydroxy-3-methylbutanoic acid, C5H7O2F3

  • Bereneice Sephton , Abigail Sephton , Matthew Hickson , Travis Dugmore and Richard Betz EMAIL logo
Published/Copyright: February 4, 2016

Abstract

C5H7O3F3, monoclinic, P21/c, a = 7.9450(4) Å, b = 21.0079(10) Å, c = 8.5285(3), β = 101.240(2)°, V = 1396.17(11) Å3, Z = 8, Rgt(F) = 0.0374, wRref(F2) = 0.1005, T = 200.

CCDC no.:: 1443128

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

Source of material

The compound was obtained commercially (fluorochem). Crystals suitable for the diffraction study were taken directly from the provided product.

Table 1

Data collection and handling.

Crystal:Colourless, block, size 0.30×0.34×0.51 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:1.80 cm−1
Diffractometer, scan mode:Bruker APEX-II CCD, φ and ω scans
2θmax:56.62°
N(hkl)measured, N(hkl)unique:13069, 3463
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2886
N(param)refined:246
Programs:SHELX [7], WinGX [8], Mercury [9], Platon [10]
Table 2

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

AtomSitexyzUiso
H(3)4e0.46450.10710.41340.052
H(1)4e0.19120.01210.64070.056
H(12A)4e0.51260.13560.80910.035
H(12B)4e0.38080.14760.64430.035
H(14A)4e0.71260.02340.68520.058
H(14B)4e0.79670.07970.80090.058
H(14C)4e0.85310.06900.63270.058
H(41)4e−0.34220.05690.13950.059
H(61)4e0.15480.09970.36400.058
H(22A)4e−0.08680.19150.24500.036
H(22B)4e−0.10920.17260.06070.036
H(24A)4e0.16960.25080.26250.060
H(24B)4e0.16200.24270.07470.060
H(24C)4e0.33200.22330.19930.060
H(42)4e−0.33140.05250.12530.059
H(62)4e0.15020.10220.36820.058
H(22C)4e−0.08680.19150.24500.036
H(22D)4e−0.10920.17260.06070.036
C(242)4e0.179(2)0.1242(6)0.086(1)0.027(3)
H(24D)4e0.12340.08240.07850.040
H(24E)4e0.30400.11870.11090.040
H(24F)4e0.14650.1464−0.01700.040
Table 3

Atomic displacement parameters (Å2).

AtomSitexyzU11U22U33U12U13U23
F(1)4e0.5741(1)0.21930(5)0.5238(1)0.0692(7)0.0383(5)0.0788(8)−0.0007(5)0.0223(6)0.0194(5)
F(2)4e0.7473(2)0.20317(5)0.7474(1)0.0787(7)0.0538(6)0.0522(6)−0.0373(5)0.0199(5)−0.0190(5)
F(3)4e0.8223(1)0.17973(5)0.5265(1)0.0542(6)0.0622(6)0.0626(6)−0.0223(5)0.0310(5)−0.0012(5)
O(3)4e0.5592(1)0.09017(5)0.4522(1)0.0328(5)0.0451(6)0.0259(5)0.0001(4)0.0034(4)−0.0063(4)
O(1)4e0.2365(1)0.04638(5)0.6195(1)0.0317(5)0.0360(5)0.0408(6)−0.0085(4)−0.0018(4)0.0108(4)
O(2)4e0.4432(1)0.01631(5)0.8220(1)0.0380(5)0.0422(6)0.0331(5)−0.0107(4)−0.0023(4)0.0103(4)
C(11)4e0.3826(2)0.05464(6)0.7201(2)0.0284(6)0.0306(6)0.0250(6)−0.0042(5)0.0086(5)−0.0013(5)
C(12)4e0.4676(2)0.11768(6)0.7018(2)0.0319(6)0.0276(6)0.0300(6)−0.0041(5)0.0101(5)−0.0032(5)
C(13)4e0.6156(2)0.11181(6)0.6099(2)0.0278(6)0.0308(6)0.0250(6)−0.0039(5)0.0059(5)−0.0017(5)
C(14)4e0.7570(2)0.06697(8)0.6892(2)0.0312(6)0.0465(8)0.0363(7)0.0037(6)0.0031(5)0.0014(6)
C(15)4e0.6898(2)0.17844(7)0.6016(2)0.0432(8)0.0379(8)0.0396(8)−0.0121(6)0.0148(6)−0.0016(6)
O(41)4e−0.2934(1)0.08867(5)0.1086(1)0.0271(5)0.0459(6)0.0424(6)−0.0074(4)−0.0015(4)0.0158(5)
O(51)4e−0.0827(1)0.06096(5)0.3108(1)0.0254(4)0.0376(5)0.0377(5)−0.0037(4)0.0020(4)0.0130(4)
C(211)4e−0.1462(2)0.09736(6)0.2029(2)0.0216(5)0.0325(6)0.0296(6)0.0018(5)0.0080(4)0.0044(5)
F(41)4e0.1234(2)0.14055(6)−0.0879(1)0.0653(7)0.0589(7)0.0282(5)−0.0013(6)0.0124(5)0.0021(5)
F(51)4e0.3531(2)0.11252(8)0.0737(2)0.0340(6)0.090(1)0.0756(9)0.0116(6)0.0276(6)0.0016(8)
F(61)4e0.1238(2)0.05755(5)0.0562(2)0.0655(7)0.0335(6)0.0570(7)0.0048(5)0.0270(6)−0.0055(5)
O(61)4e0.2148(1)0.12953(5)0.3389(1)0.0311(5)0.0495(6)0.0317(5)−0.0119(4)−0.0016(4)0.0131(4)
C(221)4e−0.0596(2)0.15851(6)0.1708(2)0.0291(6)0.0290(6)0.0334(7)0.0012(5)0.0079(5)0.0052(5)
C(231)4e0.1348(2)0.15486(7)0.1882(2)0.0266(6)0.0462(8)0.0261(6)−0.0075(5)0.0033(5)0.0070(5)
C(241)4e0.2063(5)0.2245(2)0.1804(4)0.046(1)0.032(2)0.041(2)−0.015(1)0.006(1)0.005(1)
C(251)4e0.1833(3)0.1126(2)0.0534(3)0.035(1)0.061(2)0.031(1)0.005(1)0.0159(9)−0.007(1)
O(42)4e−0.2934(1)0.08867(5)0.1086(1)0.0271(5)0.0459(6)0.0424(6)−0.0074(4)−0.0015(4)0.0158(5)
O(52)4e−0.0827(1)0.06096(5)0.3108(1)0.0254(4)0.0376(5)0.0377(5)−0.0037(4)0.0020(4)0.0130(4)
C(212)4e−0.1462(2)0.09736(6)0.2029(2)0.0216(5)0.0325(6)0.0296(6)0.0018(5)0.0080(4)0.0044(5)
F(42)4e0.212(1)0.2477(3)0.260(1)0.113(7)0.038(4)0.084(6)−0.037(4)0.025(5)−0.017(4)
F(52)4e0.1687(9)0.2256(4)0.0101(8)0.076(4)0.090(5)0.063(4)−0.020(4)0.005(3)0.054(4)
F(62)4e0.3988(7)0.1938(4)0.1645(9)0.039(3)0.101(5)0.091(5)−0.028(3)0.015(3)0.038(4)
O(62)4e0.2148(1)0.12953(5)0.3389(1)0.0311(5)0.0495(6)0.0317(5)−0.0119(4)−0.0016(4)0.0131(4)
C(222)4e−0.0596(2)0.15851(6)0.1708(2)0.0291(6)0.0290(6)0.0334(7)0.0012(5)0.0079(5)0.0052(5)
C(232)4e0.1348(2)0.15486(7)0.1882(2)0.0266(6)0.0462(8)0.0261(6)−0.0075(5)0.0033(5)0.0070(5)
C(252)4e0.231(2)0.2011(6)0.157(2)0.055(7)0.032(7)0.038(7)−0.012(6)−0.004(5)0.017(6)

Discussion

Chelate ligands have found widespread use in coordination chemistry due to the increased stability of coordination compounds they can form in comparison to monodentate ligands [1]. Hydroxycarboxylic acids are particularily interesting in this aspect as they offer two hydroxyl groups of markedly different acidity as potential bonding partners. Upon varying the substitution pattern on the hydrocarbon backbone, the acidity of the respective hydroxyl groups can be finetuned over a wide range and they may, thus, serve as probes for establishing the rules in which pKa range coordination to various central atoms can be observed. At the beginning of a study to establish the rules guiding the complexation of various transition metals by hydroxycarboxylic acids, the title compound was chosen as a starting point. To allow for comparisons of metrical parameters of the carboxylic-acid-derived ligand in envisioned coordination compounds, the crystal and molecular structure of the free ligand was determined. The crystal structure of several related compounds such as 2-hydroxy-2-(trifluoromethyl)proprionic acid [2], rac-3,3,3-trifluorolactic acid [3] and 3,3,3-trifluoro-2-hydroxy-2-(trifluoromethyl)propionic acid [4] are apparent in the literature.

The title compound is a derivative of butanoic acid bearing a hydroxyl as well as a trifluoromethyl group in β-position to the carboxyl group. The asymmetric unit contains two complete molecules, one of them showing orientational disorder with the major component constituting 82%. Only the main component is shown in the figure. The two C—O bond lengths for the carbonyl-type oxygen atom of 1.2131(16) Å and 1.2271(15) Å differ slightly between the two molecules present in the asymmetric unit, a finding that also holds true for the two acidic C-(OH) bond lengths of 1.2966(15) Å and 1.3132(15) Å as well as for the two C—O distances involving the alcoholic hydroxyl groups with values of 1.4076(15) Å and 1.4217(16) Å.

In the crystal, a series of classical hydrogen bonds can be observed. These are either intramolecular – as observed in between one alcoholic hydroxyl group as donor and the carbonyl-type oxygen atom as acceptor – or intermolecular. Overall, the carboxylic acid groups give rise to centrosymmetric dimers formed by the two different molecules present in the asymmetric unit that are further extended to tetrameric units upon the interaction of the alcoholic hydroxyl group that establishes intermolecular hydrogen bonds. In terms of graph-set analysis [5, 6], the descriptors for these hydrogen bonds are S(6), R22(8) and R46(20).


Corresponding author: Richard Betz, Department of Chemistry, Nelson Mandela Metropolitan University, Summerstrand Campus (South), University Way, Summerstrand, PO Box 77000, Port Elizabeth 6031, South Africa, e-mail:

Acknowledgements:

The authors thank Ms Sandi Eybers for helpful discussions.

References

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Received: 2015-3-9
Accepted: 2015-12-17
Published Online: 2016-2-4
Published in Print: 2016-3-1

©2016 Bereneice Sephton et al., published by De Gruyter.

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

Articles in the same Issue

  1. Cover and Frontmatter
  2. Crystal structure of rac-4,4,4-trifluoro-3-hydroxy-3-methylbutanoic acid, C5H7O2F3
  3. Crystal structure of 5-methyl-2-phenyl-1,3-dioxane-5-carboxylic acid, C12H14O4
  4. Crystal structure of ethyl 2-(2-(2-(4-chlorophenyl)-3-methylbutanamido)thiazol-4-yl)acetate, C18H21ClN2O3S
  5. The crystal structure of (4E,11E,31E,38E)-1,4,12,15,18,26,31,39-Octaaza-7,21,24-trihydroxy-penta-cyclo[13·13·13·16,10·120,24·133,37]tetratetraconta-4,6(44),7,9,11,18,20(43),21,23,25,31,33(42),34,36,38-pentadecaene, C36H42N8O3
  6. Crystal structure of poly[diaqua-μ5-4-(3,5-dicarboxylato-κ3O1:O2:O3-phenoxy)phthalato-κ3O5,O7:O8)(μ2-4-(1H-pyrazol-5-yl)pyridine-κ2N:N′)dicobalt(II)] C24H16N3O11Co2
  7. Crystal structure of catena-poly[(μ2-acetamido-benzoato-κ2O:O′)triphenyltin(IV)], C27H23NO3Sn
  8. Crystal structure of chlorido(2,2′-((1E,1′E)-(((1R,2R)-cyclohexane-1,2-diyl)bis(azanylylidene))bis(methylylidene))diphenolato-κ4N,N′,O,O′)iron(III), C20H20ClFeN2O2
  9. Crystal structure of (E)-3-(4-tert-butyl)phenyl)-1-(3-chlorophenyl)prop-2-en-1-one, C18H17CIO
  10. Crystal structure of trans-1,2-bis(pyridinium-4-yl)ethylene–2-carboxy-4-methylbenzoate (1/2), C30H26N2O8
  11. Crystal structure of poly[aqua-ethylenediamine-tetraacetatolead(II)zinc(II)]
  12. Crystal structure of (E)-2-((2-(2,4-dinitrophenyl)hydrazono)methyl)-4-nitrophenol — triethylamine (2/1), C32H33N11O14
  13. Crystal structure of catena-poly[diaqua-bis-(μ2-5-carboxy-2-(pyridin-4-yl)benzoato-κ2O:N)cadmium(II)] dihydrate, C26H24N2O12Cd
  14. Crystal structure of 2-(ethoxycarbonyl)-2-(2-nitro-1-phenylethyl)-3-oxopyrrolidinium chloride, C15H19N2O5Cl
  15. Crystal structure of 4-((pyridin-4-ylmethyl)sulfinyl)pyridine, C11H10N2OS
  16. Crystal structure of 2,5-diethoxy-1,4-bis[2-(quinoline)ethenyl]benzene, C32H28N2O2
  17. Crystal structure of diaqua(μ2-1,1′-biphenyl-4,4′-diylbis(1H-imidazole)-κ2N:N′)tetrakis(3-carboxy-5-ethylpyridine-2-carboxylato-κ2N,O)dizinc(II), C54H50N8O18Zn2
  18. Crystal structure of a poly[bis(3,4,5,6-tetrachlorophthalato)neodym(III)potassium(I)] — 4,4′-bipyridine — water (1/1/5.5)
  19. The second polymorph of triethylammonium 2,4,6-trisulfanylidene-1,3,5-triazinan-1-ide, C9H18N4S3
  20. Crystal structure of 2,2′-diamino-[1,1′-biphenyl]-4,4′-dicarboxylic acid dihydrate, C14H16N2O6
  21. Crystal structure of the catena-poly[bis(1H-imidazole-κN)-(μ2-furan-2,5-dicarboxylato-κ2O1:O4)manganese(II)]monohydrate, C12H12MnN4O6
  22. Crystal structure of (acetylacetonato-κ2O:O′)bis-((1-(2-hydroxyphenyl)-3-(pyridin-2-yl)prop-2-en-1-one)-κ2C,N)iridium(III), C33H27IrN2O6
  23. Crystal structure of 1-benzyl-3-(4-methylpyridin-2-yl)-1H-imidazol-3-ium hexafluorophosphate, C16H16F6N3P
  24. Crystal structure of tetraethylammonium 3,5-dinitrosalicylate, C15H23N3O7
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  26. Crystal structure of 2,4-dichlorobenzene anhydride, C14H6Cl4O3
  27. Crystal structure of bis(2-hydroxy-2-phenylacetato-κ2O,O′)bis(pyridine-κN)nickel(II), C26H24N2NiO6
  28. Crystal structure of (E)-4-nitro-2-(((3-(tetrahydro-8λ4-[1,3,2]oxazaborolo[2,3-b][1,3,2]oxaborol-8-yl)phenyl)imino)methyl)phenol – water (1/2), C17H18BN3O5·2H2O
  29. Crystal structure of 5-(4-carboxyphenoxy)-nicotinic acid, C13H9NO5
  30. Crystal structure of catena-poly[hexaaquabis(μ2-3-nitrophthalate-κ2O:O′)-(μ2-1,4-bis(4-pyridylmethyl)piperazine-κ2N:N′)dimanganese(II)] dihydrate, C32H42Mn2N6O20
  31. Crystal structure of diaquabis(bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate-κ4O, O′:/O′′,O′′′)bis-(2,2′-bipyridine-κ2N, N′)dicadmium(II) hydrate
  32. Crystal structure of (R)-1-(1-(6-fluorobenzo[d]thiazol-2-yl)ethyl)-3-phenylthiourea
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  36. Crystal structure of poly[bis(μ4-4,4′-(1,2-phenylenebis(oxy))dibenzoato-κ4O:O′:O′′:O′′′)bis(μ3-4,4′-(1,2-phenylenebis(oxy))dibenzoato–κ3O:O′:O′′)(μ2-1-(4-((1H-imidazol-1-yl)methyl)benzyl)-1H-imidazole-κ2N:N′)tetracobalt(II)], C94H62O24N4Co4
  37. Crystal structure of catenapoly[diaqua-(μ24,4′-bipyridine)-κ2N:N′)-bis(2,6-difluorobenzoate)-κO)nickel(II)] ethanol monosolvate, C28H30F4N2O8Ni
  38. Crystal structure of 2-(9H-fluoren-9-ylidene)hydrazine-1-carbothioamide, C14H11N3S
  39. Crystal structure of 2-(4-methoxyphenyl)-2,3-dihydro-1H-perimidine, C18H16N2O
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  42. Crystal structure of 4-(1H-imidazol-1-yl)-6-pyrimidinylferrocene, C17H14FeN4
  43. Crystal structure of [2-(4-methoxyphenyl)pyrazine-κ2C,N) chlorido[N,N′-bis-(2,6-diisopropyl-phenyl)imidazol-2-ylidene-κC)] palladium(II), C38H45ClN4OPd
  44. Crystal structure of 2-(4-acetyl-2,6-dimethyl-phenyl)-5,6-dichloro-isoindole-1,3-dione, C18H13Cl2NO3
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  46. Crystal structure of catena-poly[diaqua-μ2-4,4′-biphenyl-4,4′-diyldipyridine-κ2N:N′-bis(5-carboxy-2,6-dimethylpyridine-3-carboxylato-κO)nickel(II)] dihydrate, C40H40N4O12Ni
  47. Crystal structure of poly-[μ2-4,4′-bipyridine-κ2N:N′−μ3-thiophene-2,3-di-carboxylato-κ4O,O′, O′′:O′′′ -cadmium(II)]
  48. Crystal structure of hexaaquamanganese(II) bis(3-carboxythiophene-2-carboxylate) C12H18MnO14S2
  49. Crystal structure of 4-(3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)benzoic acid, C14H10N4O2
  50. Crystal structure of (E)-2-(benzo[d]thiazol-2-yl)-3-(pyridin-3-yl)acrylonitrile)
  51. Crystal structure of catena-poly[2,2′-bipyridinyl-6,6′-dicarboxylato-κ4N,N′,O,O′)-(μ2-2,2′-bipyridinyl-6′-carboxyl-6-carboxylato-κ5N,N′,O,O′:O′′)samarium(III)] monohydrate, C24H13N4O8Sm · H2O
  52. Crystal structure of catena-poly[bis(μ2-4-(3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)benzoato)-κ2N:O)copper(II)] dihydrate, C28H22N8O6Cu
  53. Crystal structure of catena-poly[tetraaqua-(μ2-4,4′-bipyridine-k2N:N′)-zinc(II)] fumarate tetrahydrate, C14H26N2O12Zn
  54. Crystal structure of triaqua-(1,10-phenanthroline)-(dihydrogen-3,3′,3′′-(2,4,6-trioxo-1,3,5-triazinane-1,3,5-triyl)tripropanoato) cobalt(II)dihydrogen-3,3′,3′′-(2,4,6-trioxo-1,3,5-triazinane-1,3,5-triyl)tripropanoate, C72H82Co2N16O42
  55. Crystal structure of poly[dibromido-(μ2–4,4′-bis-(pyrid-4-yl)biphenyl-κ2N:N′)lead(II)], C22H16N2PbBr2
  56. Crystal structure of catena-poly[diaqua-bis(μ2-5-carboxy-2-(pyridin-4-yl)benzoato-κ2O:N)-cobalt(II)]dihydrate, C26H24N2O12Co
  57. Crystal structure of 5-(4-pyridyl)pyrimidine–4,4′-bipyridine–1,3,5-benzenetriol–water (1:1:1:1), C25H23N5O4
  58. Crystal structure of 5-hydroxy-4-((4-hydroxyphenyl)imino)naphthalen-1(4H)-one monohydrate, C16H11NO3 · 0.5H2O
  59. Crystal structure of 2-amino-N-(4-methoxyphenyl)benzamide, C14H14N2O2
  60. Crystal structure of (2,5-dihydroxyphenyl)-(4-hydroxy-3,5-dimethoxyphenyl)methanone, C15H14O6
  61. Crystal structure of dichlorido[bis(2-hydroxyethyl)5′-([2,2′:6′,2′′-terpyridin]-4′-yl)-[1,1′:3′,1′′-terphenyl]-4,4′′-dicarboxylato]zinc(II), C39H31Cl2N3O6Zn
  62. Crystal structure of bis[4-(3-carboxy-6-fluoro-1-(4-fluorophenyl)-4-oxo-1,4-dihydroquinolin-7-yl)piperazin-1-ium] benzene-1,4-dicarboxylate (C20H18F2N3O3)2(C8H4O4), C48H40F4N6O10
  63. Crystal structure of (2,5-dihydroxyphenyl)-(4-methoxyphenyl)methanone, C14H12O4
  64. Crystal structure of photochromic 1-(2-methyl-5-phenyl-3-thienyl-2-[2-methyl-5-(4-ethoxylphenyl)-3-thienyl] 3,3,4,4,5,5-hexafluoro-cyclopent-1-ene, C29H22F6OS2
  65. Crystal structure of poly[diaquabis(μ2-biphenyl-2,4′-dicarboxylato-κ2O:O′)tris(μ2-1,1′-biphenyl-4,4′-diylbis(1H-imidazole)-κ2N:N′)dicobalt(II)] monohydrat, C82H64N12O11Co2
  66. Crystal structure of 2-amino-4-(3,4-difluorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C16H12N2O2F2
  67. Crystal structure of poly[(di-μ2-aqua-κ2O:O)bis(μ5-oxalato-1:2κ2O1; 1κ1O2; 3:4:5κ3O3; 3κ1O4)(μ4-oxalato-1:2κ2O1; 2:3κ2O2; 3:4κ2O3; 4:1κ2O4)dizinc(II)disodium(I)]
  68. Crystal structure of tetraethylammonium hexachloridotantalate(V), C8H20Cl6NTa
  69. Crystal structure of (E)-2,4-dibromo-6-(((2-nitrophenyl)imino)methyl)phenol, C13H8Br2N2O3
  70. The crystal structure of 6-chloro-2,4-diphenylquinoline
  71. Crystal structure of (E)-2-(((1,10-phenanthrolin-5-yl)imino)methyl)-5-methylphenol monohydrate, C20H15N3O·H2O
  72. Crystal structure of tris(3-(2-pyridyl)pyrazole)zinc(II)tetrachlorido zincate(II), C24H21Cl4N9Zn2
  73. Crystal structure of 4-chloro-N,N-diethyl-6-(piperidin-1-yl)-1,3,5-triazin-2-amine, C12H20ClN5
  74. The crystal structure of 4-allyl-5-benzyl-2,4-dihydro-3H-1,2,4-triazol-3-one, C12H13N3O
  75. Crystal structure of diethyl 2-(((2-(pyridin-3-ylthio)phenyl)amino)methylene)malonate, C19H20N2O4S
  76. Crystal structure of fac-tricarbonyl(2-(isopropylimino)methyl-5-methylphenolatido-κ2N,O)(pyridine-κN)rhenium(I), C19H19N2O4Re
  77. Crystal structure of 1,3,6,8-tetrakis(p-tolylthio)pyrene, C44H34S4
  78. Crystal structure of catena-poly-(diaqua-(μ2-1,2-bis(4-pyridyl)ethene-κ2N:N′)-(4-methylphthalato-κ2O,O′)-cobalt(II)trihydrate, C21H26CoN2O9
  79. Crystal structure of tetraethylammonium fac-tricarbonyl(hexafluoroacetylacetonato-κ2O,O′)-(nitrato-κO)rhenium(I), C16H21O8N2F6Re
  80. Crystal structure of 3-(thiophen-2-yl)-5-(p-tolyl)-4,5-dihydro-1H-pyrazole-1-carboxamide
  81. Crystal structure of bis(1-ethyl-3-methylimidazolium) tetrabromidocadmate(II), [C6H11N2]2[CdBr4]
  82. Crystal structure of N′-(adamantan-2-ylidene)-isonicotinohydrazide, C16H19N3O
  83. Crystal structure of trans-tetraaquabis(4-(pyridin-4-ylsulfonyl)pyridine-κN)cobalt(II) diperchlorate dihydrate, C20H28Cl2CoN4O18S2
  84. Crystal structure of (Z)-4-(furan-2-yl(p-tolylamino)methylene)-3-methyl-1-p-tolyl-1H-pyrazol-5(4H)-one, C23H21N3O2
  85. Crystal structure of 2-[(4-fluorobenzyl)sulfanyl]-4-(2-methylpropyl)-6-oxo-1,6-dihydropyrimidine-5-carbonitrile, C16H16FN3OS
  86. Crystal structure of poly[octaaqua-tris(benzene-1,2,4,5-tetracarboxylato)tetralanthanum(III)] hexahydrate, C30H34La4O38
  87. Crystal structure of trans-tetraaqua-bis(4,4′-sulfonyldipyridine-κN)zinc(II) diperchlorate dihydrate, C20H28Cl2ZnN4O18S2
  88. Crystal structure of 4-nitro-thiophene-2-carboxylic acid, a structure with a Z′ = 4, C5H3NO4S
  89. Crystal structure of dirubidium trimercury(II) tetraselenide, Rb2Hg3Se4
  90. Crystal structure of 5-(adamantan-1-yl)-3-[(4-chloroanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione, C19H22ClN3OS
  91. Crystal structure of hexaaquamagnesium(II) 5,5′-bitetrazole-1,1′-diolate, C2H12N8O8Mg
  92. The crystal structure of catena-poly[(μ2-1,1′-benzene-1,4-diylbis(1H-benzimidazole-κ2N:N′)silver(I)] nitrate, C20H14N5AgO3
  93. The crystal structure of 1-(2-(4-chlorophenoxy)-4-chlorophenyl)ethanone, C14H10Cl2O2
  94. The crystal structure of 3,5-dinitro-1,3,5-oxadiazinane, C3H6N4O5
  95. Crystal structure of methyl 5-methoxy 1H-indole-2-carboxylate, C11H11NO3
  96. Crystal structure of (Z)-1-(((3-acetyl-2-hydroxyphenyl)amino)methylene)naphthalen-2(1H)-one, C19H15NO3
  97. Crystal structure of (Z)-5-(4-chlorobenzylidene)-2-thioxothiazolidin-4-one —dimethylsulfoxide (1:1), C12H12ClNO2S3
  98. Crystal structure of 5,5′-((4-(trifluoromethyl)phenyl)methylene)bis(1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione) – diethylamine – dichloromethane (1/1/1) C25H32Cl2F3N5O6
  99. Crystal structure of 2-(dimethylsulfanylidene)-N-(4-methoxyphenyl)-3-oxo-3-phenylpropanamide
  100. Crystal structure of (1,10-phenanthroline-κ2N,N′)bis(thiocyanato-κN)platinum(II), C14H8N4PtS2
  101. Crystal structure of di(μ2-chlorido)bis[2-(2-pyridyl)phenyl-κ2N,C1]dipalladium(II), C22H16Cl2N2Pd2
  102. Crystal structure of trans-dibromidodi(pyridine-κN)palladium(II), PdBr2(C5H5N)2
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