Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807056899/zl2061sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807056899/zl2061Isup2.hkl |
CCDC reference: 654195
Key indicators
- Single-crystal X-ray study
- T = 293 K
- Mean (C-C) = 0.003 Å
- Disorder in main residue
- R factor = 0.037
- wR factor = 0.101
- Data-to-parameter ratio = 11.6
checkCIF/PLATON results
No syntax errors found
Alert level B PLAT431_ALERT_2_B Short Inter HL..A Contact F6' .. F6' .. 2.58 Ang.
Alert level C ABSTM02_ALERT_3_C The ratio of expected to reported Tmax/Tmin(RR') is < 0.90 Tmin and Tmax reported: 0.813 0.939 Tmin(prime) and Tmax expected: 0.909 0.938 RR(prime) = 0.894 Please check that your absorption correction is appropriate. PLAT029_ALERT_3_C _diffrn_measured_fraction_theta_full Low ....... 0.97 PLAT061_ALERT_3_C Tmax/Tmin Range Test RR' too Large ............. 0.89 PLAT068_ALERT_1_C Reported F000 Differs from Calcd (or Missing)... ? PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given ....... ? PLAT154_ALERT_1_C The su's on the Cell Angles are Equal (x 10000) 100 Deg. PLAT180_ALERT_3_C Check Cell Rounding: # of Values Ending with 0 = 3 PLAT301_ALERT_3_C Main Residue Disorder ......................... 22.00 Perc. PLAT366_ALERT_2_C Short? C(sp?)-C(sp?) Bond C11 - C15 ... 1.34 Ang.
Alert level G PLAT199_ALERT_1_G Check the Reported _cell_measurement_temperature 293 K PLAT200_ALERT_1_G Check the Reported _diffrn_ambient_temperature . 293 K PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints ....... 343
0 ALERT level A = In general: serious problem 1 ALERT level B = Potentially serious problem 9 ALERT level C = Check and explain 3 ALERT level G = General alerts; check 4 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 2 ALERT type 2 Indicator that the structure model may be wrong or deficient 6 ALERT type 3 Indicator that the structure quality may be low 1 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check
Pu et al. (2005) and Peters et al. (2003) describe the synthesis of diarylethene compounds. Dürr & Bouas-Laurent (1990), Morimoto & Irie (2005), Tian & Yang (2004) and Woodward & Hoffmann (1970) give background information on the photochemistry of diarylethene compounds. Ramamurthy & Venkatesan (1987), Shibata et al. (2002) and Kobatake & Irie (2004) describe the theoretical basis of the photochemistry of diarylethenes.
The title compound was prepared from (2-methyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopent-1-ene (1.83 g, 5.00 mmol) (Peters et al., 2003) and 2-bromo-N,N-dimethylbenzeneamine (1.00 g, 5.00 mmol) (Fig 3). To a stirred solution of 2-bromo-N,N-dimethylbenzeneamine (1.00 g, 5.00 mmol) in THF (50 ml) was added dropwise an n-BuLi solution (2.0 ml, 2.5 mol/l) at 195 K under a nitrogen atmosphere. Stirring was continued for 30 min, (2-methyl-5-phenyl-3-thienyl)-3,3,4,4,5,5-hexafluorocyclopent-1-ene (1.83 g, 5.00 mmol) was slowly added to the reaction mixture, and the mixture was stirred for 2.0 h at 195 K. The reaction was stopped by the addition of water. 1-(2-Methyl-5-phenyl-3-thienyl)-2-(2-N,N-dimethylphenyl) -3,3,4,4,5,5-hexafluorocyclopent-1-ene (1.56 g, 3.34 mmol) was obtained in 66.7% yield by column chromatography on SiO2 using petroleum ether [boiling range (333–363 K)] as the eluent. Finally yellow crystals were obtained by slow vapour diffusion of hexane into a solution of chloroform. The title compound was characterized by melting point, elemental analysis and NMR spectroscopy: m.p.398–399 K; 1HNMR (400 MHz, CDCl3, TMS): δ 1.69 (s, 3H, –CH3), 2.36 (s, 6H, –CH3), 6.84, 6.86 (d, 1H, J = 8.0 Hz, benzene-H), 7.02 (t, 1H, J = 8.0 Hz, benzene-H), 7.14 (s, 1H, thiophene-H), 7.29 (m, 2H, benzene-H), 7.37 (t, 2H, J = 8.0 Hz, benzene-H), 7.51 (t, 2H, J = 8.0 Hz, benzene-H); 13C NMR (100 MHz, CDCl3): δ 13.92, 43.07, 118.90, 120.67, 122.46, 125.56, 126.99, 127.60, 128.97, 129.74, 130.94, 133.91, 139.57, 140.96, 152.98; IR (KBr, cm-1): 751, 849, 951, 990, 1062, 1130, 1257, 1344, 1431, 1504, 1597, 1626, 2792, 1865, 2941; Anal. Calcd. for C24H19F6NS(%): C, 61.66, H, 4.10, Found: C, 62.05, H, 4.09.
Six F atoms of the hexafluorocyclopentene ring are disordered over two positions. The C—F bonds of the hexafluorocyclopentene ring were restrained to be 1.34 (2) Å. The bonds C12—C13 and C13—C14 were restrained to have the same length within a standard deviation of 0.02 Å. From anisotropic refinement, the site occupancies for the two moieties were refined to be 0.641 (3) (primed) and 0.359 (3) (unprimed), respectively. The H atoms were positioned theoretically and allowed to ride on their parent atoms in the final refinement [C—H = 0.93–0.96 Å and Uiso(H) = 1.2Ueq(C) or 1.5Ueq(methyl C)]. The methyl groups were treated as rigid groups and allowed to rotate about the C—C bond.
Data collection: APEX2 (Bruker, 2004); cell refinement: APEX2 (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1997); software used to prepare material for publication: SHELXTL (Bruker, 1997).
C24H19F6NS | F(000) = 480 |
Mr = 467.46 | Dx = 1.430 Mg m−3 |
Triclinic, P1 | Melting point: 399 K |
a = 8.6995 (10) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 10.0545 (12) Å | Cell parameters from 2875 reflections |
c = 12.8146 (15) Å | θ = 2.4–26.9° |
α = 81.019 (1)° | µ = 0.21 mm−1 |
β = 82.697 (1)° | T = 293 K |
γ = 80.347 (1)° | Block, yellow |
V = 1085.6 (2) Å3 | 0.44 × 0.33 × 0.30 mm |
Z = 2 |
Bruker APEXII CCD area-detector diffractometer | 3712 independent reflections |
Radiation source: fine-focus sealed tube | 2969 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.015 |
ϕ and ω scans | θmax = 25.0°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2004?) | h = −10→10 |
Tmin = 0.813, Tmax = 0.939 | k = −11→10 |
7078 measured reflections | l = −15→15 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.037 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0459P)2 + 0.285P] where P = (Fo2 + 2Fc2)/3 |
3712 reflections | (Δ/σ)max = 0.001 |
320 parameters | Δρmax = 0.17 e Å−3 |
343 restraints | Δρmin = −0.24 e Å−3 |
C24H19F6NS | γ = 80.347 (1)° |
Mr = 467.46 | V = 1085.6 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.6995 (10) Å | Mo Kα radiation |
b = 10.0545 (12) Å | µ = 0.21 mm−1 |
c = 12.8146 (15) Å | T = 293 K |
α = 81.019 (1)° | 0.44 × 0.33 × 0.30 mm |
β = 82.697 (1)° |
Bruker APEXII CCD area-detector diffractometer | 3712 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004?) | 2969 reflections with I > 2σ(I) |
Tmin = 0.813, Tmax = 0.939 | Rint = 0.015 |
7078 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 343 restraints |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.17 e Å−3 |
3712 reflections | Δρmin = −0.24 e Å−3 |
320 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
F1 | 0.8341 (2) | 0.48840 (15) | 0.89767 (14) | 0.0790 (5) | 0.9045 (18) |
F2 | 0.6224 (2) | 0.5981 (2) | 0.83418 (13) | 0.0860 (6) | 0.9045 (18) |
F3 | 0.7941 (2) | 0.61311 (17) | 1.06001 (11) | 0.0894 (6) | 0.9045 (18) |
F4 | 0.5507 (2) | 0.62687 (18) | 1.03391 (17) | 0.0967 (6) | 0.9045 (18) |
F5 | 0.71145 (19) | 0.87168 (17) | 1.04886 (11) | 0.0715 (4) | 0.9045 (18) |
F6 | 0.53483 (17) | 0.87590 (16) | 0.94364 (14) | 0.0703 (4) | 0.9045 (18) |
C12 | 0.7469 (3) | 0.6129 (3) | 0.8840 (2) | 0.0557 (6) | 0.9045 (18) |
C13 | 0.6879 (3) | 0.6637 (3) | 0.9903 (2) | 0.0606 (6) | 0.9045 (18) |
C14 | 0.6830 (3) | 0.8176 (2) | 0.96481 (19) | 0.0522 (5) | 0.9045 (18) |
F1' | 0.885 (2) | 0.5155 (17) | 0.9319 (14) | 0.0790 (5) | 0.0955 (18) |
F2' | 0.705 (2) | 0.536 (2) | 0.8269 (14) | 0.0860 (6) | 0.0955 (18) |
F3' | 0.671 (3) | 0.5792 (17) | 1.0677 (11) | 0.0894 (6) | 0.0955 (18) |
F4' | 0.5137 (17) | 0.6690 (16) | 0.9503 (13) | 0.0967 (6) | 0.0955 (18) |
F5' | 0.7913 (16) | 0.7914 (16) | 1.0580 (10) | 0.0715 (4) | 0.0955 (18) |
F6' | 0.5787 (17) | 0.8815 (17) | 0.9882 (15) | 0.0703 (4) | 0.0955 (18) |
C12' | 0.770 (2) | 0.6037 (17) | 0.8870 (14) | 0.0557 (6) | 0.0955 (18) |
C13' | 0.661 (2) | 0.660 (2) | 0.9745 (14) | 0.0606 (6) | 0.0955 (18) |
C14' | 0.7125 (18) | 0.7949 (19) | 0.9737 (10) | 0.0522 (5) | 0.0955 (18) |
S1 | 1.05466 (7) | 0.71277 (6) | 0.53074 (4) | 0.06182 (18) | |
N1 | 1.1320 (2) | 0.86263 (19) | 0.81512 (14) | 0.0601 (5) | |
C1 | 1.1269 (2) | 0.5736 (2) | 0.61735 (15) | 0.0504 (5) | |
C2 | 1.0496 (2) | 0.58068 (19) | 0.71592 (14) | 0.0482 (5) | |
H2 | 1.0710 | 0.5147 | 0.7738 | 0.058* | |
C3 | 0.9333 (2) | 0.69751 (18) | 0.72311 (14) | 0.0461 (4) | |
C4 | 0.9214 (2) | 0.7794 (2) | 0.62758 (15) | 0.0524 (5) | |
C5 | 1.2517 (2) | 0.4665 (2) | 0.58193 (15) | 0.0526 (5) | |
C6 | 1.2966 (3) | 0.4577 (3) | 0.47489 (18) | 0.0685 (6) | |
H6 | 1.2484 | 0.5214 | 0.4237 | 0.082* | |
C7 | 1.4121 (3) | 0.3554 (3) | 0.4439 (2) | 0.0805 (7) | |
H7 | 1.4411 | 0.3514 | 0.3720 | 0.097* | |
C8 | 1.4839 (3) | 0.2608 (3) | 0.5167 (2) | 0.0828 (8) | |
H8 | 1.5619 | 0.1925 | 0.4949 | 0.099* | |
C9 | 1.4409 (3) | 0.2664 (3) | 0.6226 (2) | 0.0812 (7) | |
H9 | 1.4889 | 0.2011 | 0.6729 | 0.097* | |
C10 | 1.3264 (3) | 0.3687 (2) | 0.65499 (18) | 0.0679 (6) | |
H10 | 1.2990 | 0.3721 | 0.7272 | 0.081* | |
C11 | 0.8348 (2) | 0.72232 (18) | 0.82253 (14) | 0.0443 (4) | |
C15 | 0.8024 (2) | 0.83566 (18) | 0.86960 (14) | 0.0441 (4) | |
C16 | 0.8587 (2) | 0.96785 (19) | 0.83729 (14) | 0.0469 (4) | |
C17 | 0.7485 (3) | 1.0865 (2) | 0.83338 (17) | 0.0593 (5) | |
H17 | 0.6448 | 1.0807 | 0.8596 | 0.071* | |
C18 | 0.7902 (3) | 1.2120 (2) | 0.79157 (19) | 0.0714 (6) | |
H18 | 0.7155 | 1.2900 | 0.7893 | 0.086* | |
C19 | 0.9425 (3) | 1.2200 (2) | 0.75369 (19) | 0.0728 (7) | |
H19 | 0.9705 | 1.3038 | 0.7231 | 0.087* | |
C20 | 1.0553 (3) | 1.1065 (2) | 0.75982 (17) | 0.0657 (6) | |
H20 | 1.1585 | 1.1150 | 0.7339 | 0.079* | |
C21 | 1.0178 (2) | 0.9778 (2) | 0.80447 (15) | 0.0508 (5) | |
C22 | 1.1478 (3) | 0.7867 (3) | 0.9196 (2) | 0.0793 (7) | |
H22A | 1.2362 | 0.8089 | 0.9475 | 0.119* | |
H22B | 1.1633 | 0.6909 | 0.9149 | 0.119* | |
H22C | 1.0544 | 0.8098 | 0.9657 | 0.119* | |
C23 | 1.2797 (3) | 0.8644 (3) | 0.7482 (2) | 0.0951 (9) | |
H23A | 1.2597 | 0.9017 | 0.6767 | 0.143* | |
H23B | 1.3349 | 0.7732 | 0.7493 | 0.143* | |
H23C | 1.3423 | 0.9196 | 0.7744 | 0.143* | |
C24 | 0.8113 (3) | 0.9081 (2) | 0.59867 (18) | 0.0713 (6) | |
H24A | 0.7170 | 0.9092 | 0.6466 | 0.107* | |
H24B | 0.7863 | 0.9121 | 0.5273 | 0.107* | |
H24C | 0.8603 | 0.9853 | 0.6036 | 0.107* |
U11 | U22 | U33 | U12 | U13 | U23 | |
F1 | 0.1159 (14) | 0.0358 (8) | 0.0717 (11) | −0.0072 (8) | 0.0267 (9) | 0.0001 (7) |
F2 | 0.0973 (13) | 0.0970 (14) | 0.0771 (10) | −0.0567 (10) | −0.0090 (10) | −0.0075 (9) |
F3 | 0.1293 (15) | 0.0775 (11) | 0.0512 (8) | 0.0051 (10) | −0.0145 (9) | 0.0042 (7) |
F4 | 0.1046 (13) | 0.0791 (11) | 0.1006 (14) | −0.0419 (10) | 0.0504 (11) | −0.0139 (10) |
F5 | 0.0911 (11) | 0.0739 (11) | 0.0527 (7) | −0.0183 (8) | 0.0079 (7) | −0.0247 (7) |
F6 | 0.0487 (8) | 0.0675 (9) | 0.0908 (12) | −0.0013 (7) | −0.0015 (7) | −0.0114 (8) |
C12 | 0.0710 (14) | 0.0430 (12) | 0.0522 (11) | −0.0146 (10) | −0.0002 (10) | −0.0020 (9) |
C13 | 0.0684 (14) | 0.0555 (12) | 0.0522 (12) | −0.0125 (10) | 0.0096 (10) | 0.0005 (10) |
C14 | 0.0515 (13) | 0.0518 (13) | 0.0517 (11) | −0.0032 (11) | 0.0022 (9) | −0.0130 (9) |
F1' | 0.1159 (14) | 0.0358 (8) | 0.0717 (11) | −0.0072 (8) | 0.0267 (9) | 0.0001 (7) |
F2' | 0.0973 (13) | 0.0970 (14) | 0.0771 (10) | −0.0567 (10) | −0.0090 (10) | −0.0075 (9) |
F3' | 0.1293 (15) | 0.0775 (11) | 0.0512 (8) | 0.0051 (10) | −0.0145 (9) | 0.0042 (7) |
F4' | 0.1046 (13) | 0.0791 (11) | 0.1006 (14) | −0.0419 (10) | 0.0504 (11) | −0.0139 (10) |
F5' | 0.0911 (11) | 0.0739 (11) | 0.0527 (7) | −0.0183 (8) | 0.0079 (7) | −0.0247 (7) |
F6' | 0.0487 (8) | 0.0675 (9) | 0.0908 (12) | −0.0013 (7) | −0.0015 (7) | −0.0114 (8) |
C12' | 0.0710 (14) | 0.0430 (12) | 0.0522 (11) | −0.0146 (10) | −0.0002 (10) | −0.0020 (9) |
C13' | 0.0684 (14) | 0.0555 (12) | 0.0522 (12) | −0.0125 (10) | 0.0096 (10) | 0.0005 (10) |
C14' | 0.0515 (13) | 0.0518 (13) | 0.0517 (11) | −0.0032 (11) | 0.0022 (9) | −0.0130 (9) |
S1 | 0.0825 (4) | 0.0630 (4) | 0.0377 (3) | −0.0163 (3) | 0.0008 (2) | −0.0001 (2) |
N1 | 0.0560 (10) | 0.0666 (12) | 0.0575 (10) | −0.0097 (9) | −0.0055 (8) | −0.0080 (9) |
C1 | 0.0600 (12) | 0.0501 (11) | 0.0436 (10) | −0.0186 (9) | −0.0002 (9) | −0.0071 (8) |
C2 | 0.0630 (12) | 0.0418 (10) | 0.0391 (10) | −0.0116 (9) | −0.0009 (8) | −0.0027 (8) |
C3 | 0.0607 (11) | 0.0387 (10) | 0.0401 (10) | −0.0134 (8) | −0.0040 (8) | −0.0037 (8) |
C4 | 0.0706 (13) | 0.0453 (11) | 0.0428 (10) | −0.0145 (9) | −0.0080 (9) | −0.0025 (8) |
C5 | 0.0539 (11) | 0.0576 (12) | 0.0500 (11) | −0.0197 (9) | 0.0044 (9) | −0.0141 (9) |
C6 | 0.0703 (14) | 0.0854 (17) | 0.0510 (12) | −0.0132 (12) | 0.0036 (10) | −0.0197 (11) |
C7 | 0.0742 (16) | 0.104 (2) | 0.0667 (15) | −0.0126 (15) | 0.0144 (13) | −0.0397 (15) |
C8 | 0.0629 (15) | 0.091 (2) | 0.097 (2) | −0.0090 (13) | 0.0114 (14) | −0.0391 (17) |
C9 | 0.0711 (16) | 0.0820 (18) | 0.0845 (18) | 0.0004 (13) | −0.0009 (13) | −0.0116 (14) |
C10 | 0.0705 (14) | 0.0729 (16) | 0.0556 (13) | −0.0051 (12) | 0.0055 (11) | −0.0106 (11) |
C11 | 0.0531 (11) | 0.0391 (10) | 0.0395 (9) | −0.0071 (8) | −0.0045 (8) | −0.0018 (8) |
C15 | 0.0472 (10) | 0.0408 (10) | 0.0438 (10) | −0.0056 (8) | −0.0069 (8) | −0.0035 (8) |
C16 | 0.0597 (12) | 0.0400 (10) | 0.0423 (10) | −0.0095 (8) | −0.0057 (8) | −0.0075 (8) |
C17 | 0.0695 (14) | 0.0460 (12) | 0.0622 (13) | −0.0052 (10) | −0.0057 (10) | −0.0115 (10) |
C18 | 0.1010 (19) | 0.0412 (12) | 0.0733 (15) | −0.0069 (12) | −0.0186 (14) | −0.0079 (11) |
C19 | 0.113 (2) | 0.0478 (14) | 0.0636 (14) | −0.0313 (14) | −0.0174 (14) | −0.0003 (10) |
C20 | 0.0811 (15) | 0.0642 (15) | 0.0589 (13) | −0.0338 (13) | −0.0087 (11) | −0.0048 (11) |
C21 | 0.0645 (12) | 0.0503 (12) | 0.0422 (10) | −0.0179 (10) | −0.0082 (9) | −0.0082 (8) |
C22 | 0.0745 (16) | 0.0862 (18) | 0.0728 (16) | −0.0041 (13) | −0.0220 (13) | 0.0054 (13) |
C23 | 0.0667 (16) | 0.123 (2) | 0.0886 (19) | −0.0079 (16) | 0.0093 (14) | −0.0132 (17) |
C24 | 0.0989 (18) | 0.0568 (14) | 0.0554 (13) | −0.0044 (12) | −0.0202 (12) | 0.0030 (10) |
F1—C12 | 1.349 (3) | C5—C10 | 1.385 (3) |
F2—C12 | 1.364 (3) | C5—C6 | 1.390 (3) |
F3—C13 | 1.350 (3) | C6—C7 | 1.380 (3) |
F4—C13 | 1.337 (3) | C6—H6 | 0.9300 |
F5—C14 | 1.347 (3) | C7—C8 | 1.356 (4) |
F6—C14 | 1.365 (3) | C7—H7 | 0.9300 |
C12—C11 | 1.508 (3) | C8—C9 | 1.368 (4) |
C12—C13 | 1.527 (3) | C8—H8 | 0.9300 |
C13—C14 | 1.525 (3) | C9—C10 | 1.381 (3) |
C14—C15 | 1.508 (3) | C9—H9 | 0.9300 |
F1'—C12' | 1.344 (11) | C10—H10 | 0.9300 |
F2'—C12' | 1.339 (11) | C11—C15 | 1.344 (3) |
F3'—C13' | 1.340 (11) | C15—C16 | 1.474 (3) |
F4'—C13' | 1.345 (11) | C16—C17 | 1.398 (3) |
F5'—C14' | 1.344 (11) | C16—C21 | 1.410 (3) |
F6'—C14' | 1.343 (10) | C17—C18 | 1.379 (3) |
C12'—C11 | 1.490 (12) | C17—H17 | 0.9300 |
C12'—C13' | 1.492 (12) | C18—C19 | 1.363 (4) |
C13'—C14' | 1.493 (11) | C18—H18 | 0.9300 |
C14'—C15 | 1.493 (11) | C19—C20 | 1.374 (3) |
S1—C4 | 1.722 (2) | C19—H19 | 0.9300 |
S1—C1 | 1.727 (2) | C20—C21 | 1.403 (3) |
N1—C21 | 1.395 (3) | C20—H20 | 0.9300 |
N1—C22 | 1.444 (3) | C22—H22A | 0.9600 |
N1—C23 | 1.453 (3) | C22—H22B | 0.9600 |
C1—C2 | 1.359 (3) | C22—H22C | 0.9600 |
C1—C5 | 1.477 (3) | C23—H23A | 0.9600 |
C2—C3 | 1.423 (3) | C23—H23B | 0.9600 |
C2—H2 | 0.9300 | C23—H23C | 0.9600 |
C3—C4 | 1.370 (3) | C24—H24A | 0.9600 |
C3—C11 | 1.473 (3) | C24—H24B | 0.9600 |
C4—C24 | 1.501 (3) | C24—H24C | 0.9600 |
F1—C12—F2 | 105.9 (2) | C8—C7—C6 | 121.1 (2) |
F1—C12—C11 | 114.1 (2) | C8—C7—H7 | 119.5 |
F2—C12—C11 | 111.5 (2) | C6—C7—H7 | 119.5 |
F1—C12—C13 | 111.3 (2) | C7—C8—C9 | 119.5 (2) |
F2—C12—C13 | 109.5 (2) | C7—C8—H8 | 120.2 |
C11—C12—C13 | 104.51 (19) | C9—C8—H8 | 120.2 |
F4—C13—F3 | 107.3 (2) | C8—C9—C10 | 120.2 (3) |
F4—C13—C12 | 114.3 (2) | C8—C9—H9 | 119.9 |
F3—C13—C12 | 109.0 (2) | C10—C9—H9 | 119.9 |
F4—C13—C14 | 113.4 (2) | C9—C10—C5 | 121.2 (2) |
F3—C13—C14 | 109.1 (2) | C9—C10—H10 | 119.4 |
C12—C13—C14 | 103.61 (19) | C5—C10—H10 | 119.4 |
F5—C14—F6 | 105.62 (18) | C15—C11—C3 | 129.46 (16) |
F5—C14—C15 | 113.97 (19) | C15—C11—C12' | 113.3 (8) |
F6—C14—C15 | 112.68 (18) | C3—C11—C12' | 117.1 (8) |
F5—C14—C13 | 111.62 (19) | C15—C11—C12 | 110.45 (18) |
F6—C14—C13 | 108.8 (2) | C3—C11—C12 | 120.03 (17) |
C15—C14—C13 | 104.17 (17) | C11—C15—C16 | 129.55 (16) |
F2'—C12'—F1' | 107.2 (10) | C11—C15—C14' | 105.0 (8) |
F2'—C12'—C11 | 111.4 (13) | C16—C15—C14' | 124.9 (7) |
F1'—C12'—C11 | 110.4 (13) | C11—C15—C14 | 110.47 (17) |
F2'—C12'—C13' | 114.7 (16) | C16—C15—C14 | 119.86 (17) |
F1'—C12'—C13' | 107.4 (15) | C17—C16—C21 | 119.19 (18) |
C11—C12'—C13' | 105.7 (10) | C17—C16—C15 | 118.44 (18) |
F3'—C13'—F4' | 106.7 (10) | C21—C16—C15 | 122.26 (17) |
F3'—C13'—C12' | 112.5 (15) | C18—C17—C16 | 121.5 (2) |
F4'—C13'—C12' | 108.1 (16) | C18—C17—H17 | 119.2 |
F3'—C13'—C14' | 113.5 (15) | C16—C17—H17 | 119.2 |
F4'—C13'—C14' | 114.0 (16) | C19—C18—C17 | 119.0 (2) |
C12'—C13'—C14' | 102.0 (12) | C19—C18—H18 | 120.5 |
F5'—C14'—F6' | 106.7 (10) | C17—C18—H18 | 120.5 |
F5'—C14'—C15 | 113.8 (12) | C18—C19—C20 | 121.2 (2) |
F6'—C14'—C15 | 111.1 (13) | C18—C19—H19 | 119.4 |
F5'—C14'—C13' | 110.0 (13) | C20—C19—H19 | 119.4 |
F6'—C14'—C13' | 104.7 (14) | C19—C20—C21 | 121.3 (2) |
C15—C14'—C13' | 110.1 (11) | C19—C20—H20 | 119.4 |
C4—S1—C1 | 93.19 (9) | C21—C20—H20 | 119.4 |
C21—N1—C22 | 118.53 (18) | N1—C21—C20 | 121.9 (2) |
C21—N1—C23 | 118.33 (19) | N1—C21—C16 | 120.50 (17) |
C22—N1—C23 | 113.6 (2) | C20—C21—C16 | 117.6 (2) |
C2—C1—C5 | 128.50 (18) | N1—C22—H22A | 109.5 |
C2—C1—S1 | 109.61 (15) | N1—C22—H22B | 109.5 |
C5—C1—S1 | 121.88 (14) | H22A—C22—H22B | 109.5 |
C1—C2—C3 | 114.37 (17) | N1—C22—H22C | 109.5 |
C1—C2—H2 | 122.8 | H22A—C22—H22C | 109.5 |
C3—C2—H2 | 122.8 | H22B—C22—H22C | 109.5 |
C4—C3—C2 | 112.41 (17) | N1—C23—H23A | 109.5 |
C4—C3—C11 | 124.94 (18) | N1—C23—H23B | 109.5 |
C2—C3—C11 | 122.62 (16) | H23A—C23—H23B | 109.5 |
C3—C4—C24 | 130.03 (19) | N1—C23—H23C | 109.5 |
C3—C4—S1 | 110.42 (15) | H23A—C23—H23C | 109.5 |
C24—C4—S1 | 119.52 (15) | H23B—C23—H23C | 109.5 |
C10—C5—C6 | 117.4 (2) | C4—C24—H24A | 109.5 |
C10—C5—C1 | 120.80 (18) | C4—C24—H24B | 109.5 |
C6—C5—C1 | 121.7 (2) | H24A—C24—H24B | 109.5 |
C7—C6—C5 | 120.6 (2) | C4—C24—H24C | 109.5 |
C7—C6—H6 | 119.7 | H24A—C24—H24C | 109.5 |
C5—C6—H6 | 119.7 | H24B—C24—H24C | 109.5 |
F1—C12—C13—F4 | −88.6 (3) | F2'—C12'—C11—C15 | 136.6 (11) |
F2—C12—C13—F4 | 28.2 (3) | F1'—C12'—C11—C15 | −104.5 (13) |
C11—C12—C13—F4 | 147.7 (2) | C13'—C12'—C11—C15 | 11.4 (15) |
F1—C12—C13—F3 | 31.4 (3) | F2'—C12'—C11—C3 | −48.2 (16) |
F2—C12—C13—F3 | 148.2 (2) | F1'—C12'—C11—C3 | 70.8 (14) |
C11—C12—C13—F3 | −92.3 (2) | C13'—C12'—C11—C3 | −173.3 (10) |
F1—C12—C13—C14 | 147.5 (2) | F2'—C12'—C11—C12 | 65 (6) |
F2—C12—C13—C14 | −95.7 (2) | F1'—C12'—C11—C12 | −176 (7) |
C11—C12—C13—C14 | 23.8 (3) | C13'—C12'—C11—C12 | −60 (5) |
F4—C13—C14—F5 | 86.8 (3) | F1—C12—C11—C15 | −135.5 (2) |
F3—C13—C14—F5 | −32.7 (3) | F2—C12—C11—C15 | 104.5 (2) |
C12—C13—C14—F5 | −148.7 (2) | C13—C12—C11—C15 | −13.7 (3) |
F4—C13—C14—F6 | −29.3 (3) | F1—C12—C11—C3 | 47.0 (3) |
F3—C13—C14—F6 | −148.9 (2) | F2—C12—C11—C3 | −73.0 (3) |
C12—C13—C14—F6 | 95.1 (2) | C13—C12—C11—C3 | 168.80 (18) |
F4—C13—C14—C15 | −149.7 (2) | F1—C12—C11—C12' | −24 (6) |
F3—C13—C14—C15 | 90.7 (2) | F2—C12—C11—C12' | −144 (6) |
C12—C13—C14—C15 | −25.3 (2) | C13—C12—C11—C12' | 98 (6) |
F2'—C12'—C13'—F3' | 96.9 (18) | C3—C11—C15—C16 | −1.7 (3) |
F1'—C12'—C13'—F3' | −22.2 (17) | C12'—C11—C15—C16 | 172.9 (9) |
C11—C12'—C13'—F3' | −140.0 (14) | C12—C11—C15—C16 | −178.9 (2) |
F2'—C12'—C13'—F4' | −20.6 (18) | C3—C11—C15—C14' | −173.6 (7) |
F1'—C12'—C13'—F4' | −139.7 (15) | C12'—C11—C15—C14' | 1.0 (11) |
C11—C12'—C13'—F4' | 102.5 (15) | C12—C11—C15—C14' | 9.2 (7) |
F2'—C12'—C13'—C14' | −141.1 (13) | C3—C11—C15—C14 | 174.39 (19) |
F1'—C12'—C13'—C14' | 99.9 (15) | C12'—C11—C15—C14 | −11.1 (9) |
C11—C12'—C13'—C14' | −18.0 (17) | C12—C11—C15—C14 | −2.8 (2) |
F3'—C13'—C14'—F5' | 14.7 (18) | F5'—C14'—C15—C11 | 110.7 (12) |
F4'—C13'—C14'—F5' | 137.1 (15) | F6'—C14'—C15—C11 | −128.9 (11) |
C12'—C13'—C14'—F5' | −106.6 (15) | C13'—C14'—C15—C11 | −13.3 (13) |
F3'—C13'—C14'—F6' | −99.6 (17) | F5'—C14'—C15—C16 | −61.6 (15) |
F4'—C13'—C14'—F6' | 22.8 (17) | F6'—C14'—C15—C16 | 58.8 (14) |
C12'—C13'—C14'—F6' | 139.1 (13) | C13'—C14'—C15—C16 | 174.3 (9) |
F3'—C13'—C14'—C15 | 140.9 (14) | F5'—C14'—C15—C14 | −132 (4) |
F4'—C13'—C14'—C15 | −96.7 (16) | F6'—C14'—C15—C14 | −12 (3) |
C12'—C13'—C14'—C15 | 19.6 (17) | C13'—C14'—C15—C14 | 104 (4) |
C4—S1—C1—C2 | 0.04 (16) | F5—C14—C15—C11 | 140.05 (19) |
C4—S1—C1—C5 | 178.88 (16) | F6—C14—C15—C11 | −99.6 (2) |
C5—C1—C2—C3 | −179.16 (18) | C13—C14—C15—C11 | 18.2 (2) |
S1—C1—C2—C3 | −0.4 (2) | F5—C14—C15—C16 | −43.4 (3) |
C1—C2—C3—C4 | 0.7 (2) | F6—C14—C15—C16 | 76.9 (3) |
C1—C2—C3—C11 | 178.77 (17) | C13—C14—C15—C16 | −165.31 (18) |
C2—C3—C4—C24 | 177.3 (2) | F5—C14—C15—C14' | 74 (3) |
C11—C3—C4—C24 | −0.7 (3) | F6—C14—C15—C14' | −166 (4) |
C2—C3—C4—S1 | −0.6 (2) | C13—C14—C15—C14' | −48 (3) |
C11—C3—C4—S1 | −178.65 (15) | C11—C15—C16—C17 | 130.2 (2) |
C1—S1—C4—C3 | 0.35 (16) | C14'—C15—C16—C17 | −59.4 (8) |
C1—S1—C4—C24 | −177.87 (18) | C14—C15—C16—C17 | −45.6 (3) |
C2—C1—C5—C10 | −12.5 (3) | C11—C15—C16—C21 | −46.0 (3) |
S1—C1—C5—C10 | 168.85 (17) | C14'—C15—C16—C21 | 124.4 (8) |
C2—C1—C5—C6 | 166.1 (2) | C14—C15—C16—C21 | 138.23 (19) |
S1—C1—C5—C6 | −12.5 (3) | C21—C16—C17—C18 | 4.4 (3) |
C10—C5—C6—C7 | −0.4 (3) | C15—C16—C17—C18 | −171.92 (19) |
C1—C5—C6—C7 | −179.1 (2) | C16—C17—C18—C19 | −0.3 (3) |
C5—C6—C7—C8 | 0.3 (4) | C17—C18—C19—C20 | −2.3 (4) |
C6—C7—C8—C9 | 0.2 (4) | C18—C19—C20—C21 | 0.5 (3) |
C7—C8—C9—C10 | −0.8 (4) | C22—N1—C21—C20 | 123.1 (2) |
C8—C9—C10—C5 | 0.7 (4) | C23—N1—C21—C20 | −21.1 (3) |
C6—C5—C10—C9 | −0.1 (3) | C22—N1—C21—C16 | −57.9 (3) |
C1—C5—C10—C9 | 178.6 (2) | C23—N1—C21—C16 | 157.9 (2) |
C4—C3—C11—C15 | −50.8 (3) | C19—C20—C21—N1 | −177.4 (2) |
C2—C3—C11—C15 | 131.4 (2) | C19—C20—C21—C16 | 3.6 (3) |
C4—C3—C11—C12' | 134.8 (9) | C17—C16—C21—N1 | 175.04 (18) |
C2—C3—C11—C12' | −43.0 (9) | C15—C16—C21—N1 | −8.8 (3) |
C4—C3—C11—C12 | 126.2 (2) | C17—C16—C21—C20 | −5.9 (3) |
C2—C3—C11—C12 | −51.6 (3) | C15—C16—C21—C20 | 170.28 (17) |
Experimental details
Crystal data | |
Chemical formula | C24H19F6NS |
Mr | 467.46 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 8.6995 (10), 10.0545 (12), 12.8146 (15) |
α, β, γ (°) | 81.019 (1), 82.697 (1), 80.347 (1) |
V (Å3) | 1085.6 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.44 × 0.33 × 0.30 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2004?) |
Tmin, Tmax | 0.813, 0.939 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7078, 3712, 2969 |
Rint | 0.015 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.037, 0.101, 1.03 |
No. of reflections | 3712 |
No. of parameters | 320 |
No. of restraints | 343 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.17, −0.24 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 1997).
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Photochromic diarylethenes have been extensively studied for optoelectronic applications, optical storage, photo-switches and waveguides, etc (Dürr & Bouas-Laurent, 1990). The design and synthesis of new photochromic compounds is a hotspot in this research field, and many publications concerning synthesis and investigation of the properties of diarylethenes with heterocyclic aryl rings have been reported (Pu et al., 2005). Almost all photochromic perfluorocyclopentene systems have five-membered heterocyclic rings as the aryl substitituents (Tian & Yang, 2004). We supposed that a diarylethene would have some novel characteristics when replacing one of the five-membered heterocyclic rings with a six-membered aryl ring. This paper presents the synthesis and crystal structure of a new asymmetric diarylethene with a six-membered aryl ring group.
The C11—C15 bond (1.344 (3) Å) in the cyclopent-1-ene ring of the title compound is clearly a double bond, being significantly shorter than all other C—C single bonds in the molecule. The hexafluoropropylene unit tethered to the double bond forces the methylthiophene and the six-membered aryl groups into a cis position. The thiophene ring and six-membered aryl systems bonded to the cyclopentene have similar dihedral angles to the least-square plane of the cyclopentene ring, which are 46.6 (7)° and 49.7 (4)°, respectively. This geometry brings the potential photoreactive centers in close proximity (Fig.1). Such a conformation is crucial for the compound to exhibit photochromic and photoinduced properties (Woodward & Hoffmann, 1970). The distance between the two reactive C atoms C4 in the thienyl and C21 in the aryl unit of the molecule is 3.504 (5) Å. This distance indicates that the crystal can be expected to undergo photochromism to generate the photoisomer of the title compound upon irradiation (Fig. 4) (Morimoto & Irie, 2005), as photochromic reactivity usually appears when the distance between the reactive C atoms is less than 4.2 Å (Ramamurthy & Venkatesan, 1987; Shibata et al., 2002; Kobatake & Irie, 2004). When the crystal was dissolved in hexane the absorption peak of 283 nm decreased significantly upon irradiation with 365 nm UV light, but the absorption at 228 nm increased dramatically. Upon irradiation with visible light with wavelengths greater than 510 nm, the change of the absorption spectrum of the hexane solution reversed.