Startseite The crystal structure of 1,2-bis[2-methyl-5-(3-cyanophenyl)-3-thienyl]-3,3,4,4,5,5-hexafluoro-cyclopent-1-ene, C29H16F6N2S2
Artikel Open Access

The crystal structure of 1,2-bis[2-methyl-5-(3-cyanophenyl)-3-thienyl]-3,3,4,4,5,5-hexafluoro-cyclopent-1-ene, C29H16F6N2S2

  • Luo-Na Lei , Wen-Yuan Xu EMAIL logo und Jian-Min Yi
Veröffentlicht/Copyright: 13. Mai 2017

Abstract

C29H16F6N2S2, monoclinic, C2/c, a = 18.910(3) Å, b = 8.5720(14) Å, c = 16.757(3) Å, β = 100.474(2)°, V = 2670.9(7) Å3, Z = 4, Rgt(F) = 0.0825 , wRref(F2) = 0.1833 , T = 296(2) K.

CCDC no.:: 1540211

The crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.

Table 1

Data collection and handling.

Crystal:Colourless block
Size:0.25 × 0.20 × 0.16 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:2.6 cm−1
Diffractometer, scan mode:Bruker SMART, φ and ω
2θmax, completeness:56.6°, >93% ( >99% up to 2θ =50.4°)
N(hkl)measured, N(hkl)unique, Rint:9927, 2961, 0.044
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 1902
N(param)refined:206
Programs:Bruker programs [1], SHELX [2]
Table 2

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

AtomxyzUiso*/Ueq
S10.48786(5)0.67983(10)0.07755(5)0.0501(3)
N10.2781(3)1.1298(5)−0.1342(3)0.1120(16)
C10.50000.0243(7)0.25000.091(2)
C20.4785(2)0.1298(4)0.1778(2)0.0559(9)
C30.48826(16)0.2934(3)0.20951(19)0.0420(7)
C40.47489(16)0.4263(4)0.15310(18)0.0417(8)
C50.41170(17)0.4411(4)0.09288(17)0.0436(8)
H50.37530.36680.08490.052*
C60.40953(17)0.5741(4)0.04802(18)0.0452(8)
C70.52227(17)0.5476(4)0.15188(18)0.0432(8)
C80.59361(17)0.5767(4)0.2036(2)0.0560(9)
H8A0.58710.62470.25350.084*
H8B0.62120.64460.17560.084*
H8C0.61860.47950.21510.084*
C90.35279(17)0.6287(4)−0.01729(18)0.0448(8)
C100.30496(19)0.5242(4)−0.0612(2)0.0579(9)
H100.30860.4188−0.04790.069*
C110.34578(19)0.7862(4)−0.0380(2)0.0532(9)
H110.37720.8585−0.00930.064*
C120.2522(2)0.5727(5)−0.1242(2)0.0716(11)
H120.22070.5006−0.15290.086*
C130.2464(2)0.7291(6)−0.1443(2)0.0731(12)
H130.21140.7624−0.18730.088*
C140.2928(2)0.8359(5)−0.1006(2)0.0618(10)
C150.2850(2)0.9997(6)−0.1198(3)0.0813(13)
F1a0.5248(7)−0.1031(9)0.2482(7)0.099(7)
F2a0.4183(11)0.096(2)0.1278(9)0.082(4)
F3a0.4998(9)0.1060(16)0.1083(7)0.094(4)
F1Ab0.5776(6)−0.0184(16)0.2315(4)0.106(4)
F2Ab0.4050(10)0.103(2)0.1576(11)0.102(5)
F3Ab0.5311(7)0.0952(15)0.1335(8)0.084(3)
  1. aOccupancy: 0.482(16); bOccupancy: 0.518(16).

Source of material

The title compound was prepared according to the literature method [3] in 76.42% yield. The title compound was recrystallized from hexane at room temperature and colorless crystals were obtained.

Experimental details

Hydrogen atoms were placed in calculated positions and allowed to ride on their parent atoms. Residual electron density maps indicated the presence of disorder, particularly for the hexafluoropentene moiety, which could not be modelled satisfactorily and which ultimately resulted in deviations from normal geometry. Refinement of a disordered model was hampered by the fact that the molecule sits on a special position (2-fold rotation axis). The presence of whole-molecule disorder for this ambient-temperature dataset cannot be ruled out in this instance.

Discussion

Photochromic compounds that behave as key smart materials in various optoelectronic devices, can specifically switch the physical and chemical properties between two or more states, when stimulated with different wavelength of light [4]. In the past decades, scientists have been paying much attention to the design and fabrication of functional photochromic compounds, such as photochromic diarylethene derivatives [5], spiropyran devatives [6] and azobenzene derivatives [7]. Among all these photochromic compounds, diarylethene derivatives are regarded as the best promising candidates for their notable thermal irreversible photochromic behaviour and remarkable fatigue resistance [4, 8] . In addition, the photochromic properties of diarylethene can be predictably improved by structure variation to meet a specific functional requirement. The photochromic properties of diarylethene can be strongly influenced by introducing substituents to the aryl groups, e.g. by intriducing long π conjugation or chosing appropriate electron-donating/withdrawing substituents [5, 9] .

In order to investigate the effect of the cyanophenyl group on the photochemical properties, we have now determined the structure of 1,2-bis[2-methyl-5-(3-cyanophenyl)-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene. The title compound is a new symmetrical hybrid photochromic diarylethene derivative. The two thiophene rings are linked by the C3 = C3A double bond (1.349(6) Å), which is shorter than the formal single bonds [such as C2–C3, 1.499(5) Å and C3–C4, 1.473(4) Å] in the perfluorocyclopentene ring. The angle between the planes formed by the perfluorocyclopentene and thiophene rings is 48.73(18)°. The molecule adopts an antiparallel conformation [5] of C2 symmetry, which is a crucial prerequisite for photoactivity. The molecular structure of the title compound is shown in the figure. An antiparallel conformation [5] was adopted in the molecule with a 3.540(4) Å distance between the photoactive carbon atoms (C7–C7A). This distance indicates that the crystal can be expected to undergo photochromism to form the closed ring isomer, because photochromic reactivity usually appears when the distance between the reactive C atoms is less than 4.2 Å [10, 11] .

In the crystal structure, the centroid-to-centroid distance between phenyl rings of neighboring molecules related by inversions symmetry at sites 4c and 4d is 3.756(4) Å, and the molecules are involved in a π-π-type interaction. The crystal can display a notable color change upon irradiation with UV light based on the empirical rule [4, 12] . Colourless crystals turn blue when irradiated by 313 UV light, and the reversible transition can be triggered by exposure to visible light. The photochromism was highly reproducible in the crystalline phase even after 200 successive cycles, indicating that it may find application in certain optoelectronic devices [4, 13] .

Acknowledgement

This work was supported by National Nature Science Foundation of China (21471053), the State Key Laboratory of New Ceramic and Fine Processing Tsinghua University (KF201511), and the Scientific Research Fund of Hunan Provincial Education Department (Grant no. 14K041). Finally, we thank the editorial team for editing our paper.

References

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Received: 2016-10-26
Accepted: 2017-4-6
Published Online: 2017-5-13
Published in Print: 2017-7-26

©2017 Luo-Na Lei et al., published by De Gruyter, Berlin/Boston

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

Artikel in diesem Heft

  1. Cover and Frontmatter
  2. Crystal structure of poly[diaqua-(μ2-4,4′-bipyridine-κ2N:N′)manganese(II)] bis(4-chlorobenzenesulfonate) – 4,4′-bipyridine – water (1/1/2) C42H40Cl2MnN6O10S2
  3. The crystal structure of 1,2-bis[2-methyl-5-(3-cyanophenyl)-3-thienyl]-3,3,4,4,5,5-hexafluoro-cyclopent-1-ene, C29H16F6N2S2
  4. Crystal structure of the first characterized polymeric copper and sodium complex diaqua-(tris-acetato-κO,O′)(μ2-acetato-κO′′)dinatrium copper(II) monohydrate, C8H18CuNa2O11
  5. The crystal structure of the Schiff base (E)-2,6-diisopropyl-N-(pyridin-3-yl-methylene)aniline, C18H22N2
  6. Crystal structure of methyl 2,7,7-trimethyl-4-(4-nitrophenyl)-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C20H22N2O5
  7. Crystal structure of bis(1,3-bis(diphenylphosphino)propane-κ2P,P′)silver(I) trifluorosulfonate–methanol (1:0.5), [Ag(C27H26P2)]SO3CF3⋅0.5CH3OH
  8. Crystal structure of μ-1,4-bis(diphenylphosphine)butane-2,9-dimethyl-1,10-phenanthroline-κ2N:N′-bis(cyano-κC)dicopper(I)]-water, C58H56Cu2N6O2P2
  9. Crystal structure of N2,N6-bis(1-hydrazinyl-2-methyl-1-oxopropan-2-yl) pyridine-2,6-dicarboxamide, C15H23N7O4
  10. Crystal structure of 1,3-dimethyl-2-phenyl-1H-perimidin-3-ium iodide, C19H17IN2
  11. Crystal structure of diaqua-(2,2′-(butane-1,4-diyl)-bis(5-carboxy-1H-imidazole-4-carboxylato)-κ4O,O′,N,N′)cadmium(II) monohydrate, C14H18O11N4Cd
  12. Crystal structure of ethyl (E)-3-(cyclopropylamino)-2-(2,4-dichloro-5-fluorobenzoyl) acrylate, C15H14Cl2FNO3
  13. Crystal structure of bis-(1-(4-chlorophenyl)-3-phenyl-4-thenoyl-1H-pyrazol-5-ol-κ2O,O′)-(N,N-dimethylformamide)zinc(II), C43H31Cl2N5O5S2Zn
  14. Crystal structure of tetrakis(μ3-2-(N-(2-hydroxyethyl)amino)ethoxo)-tetrachloro-tetra-cobalt(II) methanol solvate, C17H44Cl4Co4N4O9
  15. Crystal structure of 3-amino-1-(4-bromophenyl)-9-methoxy-1H-benzo[f]chromene-2-carbonitrile, C21H15BrN2O2
  16. Crystal structure of 2-amino-4-(4-isopropyl-phenyl)-3-cyano-5-oxo-4H,5H-pyrano[3,2-c]chromene, C22H18N2O3
  17. Crystal structure of 3-amino-8-methoxy-1-(4-methoxy phenyl)-1H-benzo[f]chromene-2-carbonitrile, C22H18N2O3
  18. Crystal structure of monoaqua-[6,6′-((1E,1′E)-(1,2-phenylene bis(azanylylidene))bis(methanylylidene))bis(4-bromo-2-nitrophenolato-κ4N,N′,O,O′)]zinc(II), C20H12Br2N4O7Zn
  19. Crystal structure of 11-(4-(dimethylamino)phenyl)-17-hydroxy-13-methyl-17-(prop-1-yn-1-yl)-1,2,6,7,8,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one – acetonitril (1/2), C33H41N3O2
  20. Crystal structure of tert-butyl (phenylsulfinyl)carbamate, C11H15NO3S
  21. Crystal structure of catena-poly{diaqua-bis(3-(1H-1,2,4-triazol-1-yl)benzoato-κ2O:N)copper(II)} monohydrate, C18H18CuN6O7
  22. Crystal structure of tetraaqua-bis(3-(4H-1,2,4-triazol-4-yl)benzoato-κN)cobalt(II), C18H20CoN6O8
  23. The crystal structure of 4-bromo-N-cyclopropyl-2,5-difluorobenzenesulfonamide, C9H8BrF2NO2S
  24. Crystal structure of ([3,3′-bipyridine]-6,6′-dicarboxylato-κ2O:O′)-bis(1,2-bis(4-pyridyl)ethane-κ2N:N′)disilver(I) dihydrate, C37H35Ag2N5O6
  25. The crystal structure of (4-(1H-1,2,4-triazol-1-yl)benzoato-κN)-[4-(1H-1,2,4-triazol-1-yl)benzoic acid-κN]silver(I), C18H13AgN6O4
  26. Crystal structure of 3-(4-methoxyphenyl)-1-(4-methylphenyl)prop-2-en-1-one, C17H16O2
  27. Crystal structure of bis(2-((E)-((4-((E)-1-(ethoxyimino)ethyl)phenyl)imino)methyl)-5-methoxyphenolato-κ2O,N)copper(II), C36H38CuN4O6
  28. Crystal structure of poly[1,2-bis(1,2,4-triazol-4-yl)ethane-κ2N:N′]silver(I) bromate monohydrate]silver(I), C6H10AgBrN6O4
  29. The crystal structure of 2,3,5-triphenyl-2,3-dihydro-1H-tetrazol-1-ium 2,3-dioxoindoline-5-sulfonate, C27H19N5O5S
  30. Crystal structure of 3-(2-amino-1,3-selenazol-4-yl)-2H-chromen-2-one – dimethylformamide (1/1), C15H15N3O3Se
  31. Crystal structure of diethyl 3,3′-(diazene-1,2-diyl)(E)-dibenzoate, C18H18N2O4
  32. Crystal structure of cis-bis((1H-benzimidazol-2-yl)methanol-κN,O)-bis(isothiocyanato-κN)nickel(II), C18H16N6NiO2S2
  33. Crystal structure of bis(2-(2′-hydroxy-5′-methoxyphenyl)-1H-benzimidazole)boron – tetrahydrofuran (1/1), C36H37N4O6B
  34. Crystal structure of poly[aqua-bis(nitrato-κ2O,O′)-(μ3-1,3-benzimidazol-3-ium-1,3-diacetato-κ4O,O′:O′′:O′′′)dysprosium(III)], C11H11DyN4O11
  35. Crystal structure of n-butyl-tris(dicyclo-hexylamido)hafnium(IV), C40H75HfN3
  36. Crystal structure of (E)-1-[1-(3-chloro-4-fluoro-phenyl)ethylidene]-2-(2,4-dinitrophenyl)hydrazine, C28H20Cl2F2N8O8
  37. The crystal structure of ethyl 4-((2-hydroxybenzyl)amino)benzoate, a Schiff base, C16H17NO3
  38. Crystal structure of 3-(2-(4-isobutylphenyl)propanoyl)-1-methylimidazolidine-2,4-dione, C17H22N2O3
  39. Crystal structure of poly[(μ3-2-(pyrazin-2-ylthio)acetato-κ3N:O:S)silver(I)], C6H5AgN2O2S
  40. Crystal structure of (E)-1-(3-((E)-((2-hydroxynaphthalen-1-yl)methylene)amino)phenyl)ethanone O-benzyl oxime, C26H22N2O2
  41. Crystal structure of (E)-2,3-dihydroxybenzaldehyde O-(2-((((E)-1-(2,5-dihydroxyphenyl)ethylidene)amino)oxy)ethyl) oxime monohydrate, C17H20N2O7
  42. Crystal structure of 4-(chloromethyl)-3-nitrobenzoic acid, C8H6ClNO4
  43. Crystal stucture of 4-((10H-phenothiazin-10-yl)methyl)-2,6-di-tert-butylphenol, C27H31NOS
  44. The crystal structure of ethyl 1-(4-nitrophenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate, C13H10F3N3O4
  45. Crystal structure of catena-poly[di-(μ3-oxido-κ3O:O:O)-tetraoxido-(μ2-5′-(pyrazin-2-yl)-1H,2′H-3,3′-bi(1,2,4-triazole)-κ2N:N′)dimolybdenum(VI)], C8H6Mo2N8O6
  46. Crystal structure of (3,6-dioxocyclohexa-1,4-diene-1,4-bis(olato)-κ4O,O′:O′′,O′′′)-bis(tris(2-pyridylmethyl)amine-κ4N,N′,N′′,N′′′))-dizinc(II) bis(hexafluorophosphate(V)), C42H38F12N8O4P2Zn2
  47. Crystal structure of catena-poly[hexakis(μ2-2-acetylphenolato-κ3O:O,O′)trimanganese(II)], C48H42Mn3O12
  48. The crystal structure of 2,2-difluoro-4-(trifluoromethyl)-2,5-dihydro-[1,3,2]dioxaborinino[5,4-c]chromen-3-ium-2-uide, C11H6BF5O3
  49. Crystal structure of methyl (E)-2-(4-(diethylamino)-2-hydroxybenzylidene)hydrazine-1-carboxylate, C13H19N3O3
  50. The crystal structure of tert-butyl 2,6-dihydropyrrolo[3,4-c]pyrazole-5(4H)-carboxylate, C10H15N3O2
  51. Crystal structure of 1,1-bis(η5-adamantylcyclopentadienyl)-3-phenyl-2-trimethylsilyl-2,3-dihydroisotitanazole, C42H55NSiTi
  52. Crystal structure of 2-(4-(2-(4-benzylpiperazin-1-yl)ethyl)benzyl)isoindoline-1,3-dione, C28H29N3O2
  53. Important impurity of Flupirtine – a single crystal study on ethyl (6-amino-5-((ethoxycarbonyl)amino)pyridin-2-yl)(4-fluorobenzyl)carbamate, C18H21FN4O4
  54. Crystal structure of ethyl 3-(4-methoxyphenyl)-1-(2-(4-methoxyphenyl)-2-oxoethyl)-1H-pyrazole-5-carboxylate, C22H22N2O5
  55. Crystal structure of 2,3,9,10-tetramethoxy-5,6-dihydroisoquinolino[2,1-b]isoquinolin-7-ium 5-hydroxy-3-(4-hydroxyphenyl)-4-oxo-4H-chromen-7-olate methanol solvate, C37H35N1O10
  56. The crystal structure of the inner salt of 2-[(aminoiminomethyl)amino]ethylcarbamic acid [systematic name: (2-((diaminomethylene)ammonio)ethyl)carbamate], C4H10N4O2
  57. Crystal structure of (8-hydroxy-5-nitroquinolinium) perchlorate – 8-hydroxy-5-nitroquinoline (1/1), C18H13ClN4O10
  58. The crystal structure of (5-methyl-1,2,4-oxadiazol-3-yl)ferrocene, C13H12FeN2O
  59. Crystal structure of methyl 1-(2-(fluorosulfonyl)ethyl)-2-oxocyclopentanecarboxylate, C9H13FO5S
  60. Crystal structure of the triclinic modification of 1-methyl-4-nitroimidzole, C4H5N3O2
  61. Corrigendum
  62. Crystal structure of 4-bromo-2-(1H-pyrazol-3-yl)phenol, C9H7BrN2O
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