1-(2,5-Dimethyl-3-thien­yl)-3,3,4,4,5,5-hexa­fluoro-2-(5-formyl-2-methyl-3-thien­yl)cyclo­pent-1-ene: a new photochromic diaryl­ethene compound

Pu, S.-Z.; Luo, F.-S.; Wang, R.-J.; Yang, T.-S.

doi:10.1107/S160053680600674X

1-(2,5-Dimethyl-3-thienyl)-3,3,4,4,5,5-hexafluoro-2-(5-formyl-2-methyl-3-thienyl)cyclopent-1-ene: a new photochromic diarylethene compound

S.-Z. Pu, F.-S. Luo, R.-J. Wang and T.-S. Yang

The title compound, C₁₇H₁₂F₆OS₂, is a new nonsymmetric photochromic diarylethene which contains 3-thienyl substituents. The distance between the two reactive C atoms in the molecule is 3.550 (7) Å. The dihedral angles between the central cyclopentene ring and two thiophene rings are 44.7 (3) and 43.6 (3)°.

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Supporting information

	Crystallographic Information File (CIF) https://doi.org/10.1107/S160053680600674X/is6183sup1.cif Contains datablocks global, I
	Structure factor file (CIF format) https://doi.org/10.1107/S160053680600674X/is6183Isup2.hkl Contains datablock I

CCDC reference: 605102

checkCIF report

Key indicators

Single-crystal X-ray study
T = 295 K
Mean (C-C) = 0.008 Å
Disorder in main residue
R factor = 0.075
wR factor = 0.162
Data-to-parameter ratio = 11.6

checkCIF/PLATON results

No syntax errors found



Alert level B
PLAT213_ALERT_2_B Atom F5      has ADP max/min Ratio .............       4.10 prolat
PLAT242_ALERT_2_B Check Low       Ueq as Compared to Neighbors for         C5
PLAT242_ALERT_2_B Check Low       Ueq as Compared to Neighbors for        C10
PLAT242_ALERT_2_B Check Low       Ueq as Compared to Neighbors for        C4'

Alert level C
PLAT026_ALERT_3_C Ratio Observed / Unique Reflections too Low ....         46 Perc.
PLAT213_ALERT_2_C Atom F6      has ADP max/min Ratio .............       3.50 prolat
PLAT301_ALERT_3_C Main Residue  Disorder .........................      21.00 Perc.
PLAT340_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ...          8
PLAT431_ALERT_2_C Short Inter HL..A Contact  F6     ..  O1      ..       2.76 Ang.

   0 ALERT level A = In general: serious problem
   4 ALERT level B = Potentially serious problem
   5 ALERT level C = Check and explain
   0 ALERT level G = General alerts; check

   0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   6 ALERT type 2 Indicator that the structure model may be wrong or deficient
   3 ALERT type 3 Indicator that the structure quality may be low
   0 ALERT type 4 Improvement, methodology, query or suggestion

Computing details top

Data collection: XSCANS (Bruker, 1997); cell refinement: XSCANS; data reduction: XSCANS; program(s) used to solve structure: SHELXTL (Bruker, 1997); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.

1-(2,5-Dimethyl-3-thienyl)-3,3,4,4,5,5-hexafluoro-2-(5-formyl-2-methyl- 3-thienyl)cyclopent-1-ene top

Crystal data top

C₁₇H₁₂F₆OS₂	F(000) = 832
M_r = 410.39	D_x = 1.542 Mg m⁻³
Monoclinic, P2₁/c	Melting point: 382.2 K
Hall symbol: -P 2ybc	Mo Kα radiation, λ = 0.71073 Å
a = 17.1836 (15) Å	Cell parameters from 47 reflections
b = 8.8408 (8) Å	θ = 2.4–16.9°
c = 11.6536 (16) Å	µ = 0.36 mm⁻¹
β = 93.342 (9)°	T = 295 K
V = 1767.4 (3) Å³	Prism, colourless
Z = 4	0.4 × 0.2 × 0.2 mm

Data collection top

Bruker P4 diffractometer	R_int = 0.029
Radiation source: fine-focus sealed tube	θ_max = 25.0°, θ_min = 2.4°
Graphite monochromator	h = −20→20
ω scans	k = −10→1
4094 measured reflections	l = −1→13
3107 independent reflections	3 standard reflections every 97 reflections
1421 reflections with I > 2σ(I)	intensity decay: none

Refinement top

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)] = 0.075	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.162	H-atom parameters constrained
S = 1.02	w = 1/[σ²(F_o²) + (0.001P)² + 5P] where P = (F_o² + 2F_c²)/3
3107 reflections	(Δ/σ)_max < 0.001
267 parameters	Δρ_max = 0.51 e Å⁻³
18 restraints	Δρ_min = −0.30 e Å⁻³

Special details top

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.

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

	x	y	z	U_iso*/U_eq	Occ. (<1)
S1	0.42007 (9)	0.70882 (18)	0.49186 (14)	0.0755 (5)
S2	0.07985 (9)	0.70498 (19)	0.51493 (14)	0.0780 (5)
O1	0.5225 (5)	0.7470 (10)	0.2911 (6)	0.189 (3)
C1	0.2871 (3)	0.3389 (6)	0.4874 (5)	0.0596 (14)
C2	0.2138 (3)	0.3387 (6)	0.5202 (5)	0.0599 (14)
C3	0.1851 (4)	0.1788 (7)	0.5327 (5)	0.0831 (19)
C4	0.2511 (13)	0.0781 (11)	0.5155 (12)	0.101 (7)	0.65
F1	0.1530 (5)	0.1444 (8)	0.6282 (7)	0.114 (3)	0.65
F2	0.1296 (4)	0.1498 (7)	0.4434 (7)	0.104 (2)	0.65
F3	0.2406 (4)	−0.0466 (7)	0.4505 (8)	0.117 (3)	0.65
F4	0.2884 (4)	0.0314 (9)	0.6137 (7)	0.119 (3)	0.65
F5	0.3289 (7)	0.1549 (11)	0.3552 (8)	0.186 (7)	0.65
F6	0.3768 (5)	0.1466 (12)	0.5338 (13)	0.218 (8)	0.65
C4'	0.253 (2)	0.080 (2)	0.4892 (18)	0.066 (8)*	0.35
F1'	0.1891 (10)	0.164 (2)	0.6511 (9)	0.127 (8)*	0.35
F2'	0.1101 (6)	0.1525 (19)	0.5164 (14)	0.110 (5)*	0.35
F3'	0.2558 (10)	−0.0370 (19)	0.5633 (15)	0.119 (5)*	0.35
F4'	0.2136 (9)	0.0281 (18)	0.3944 (11)	0.114 (5)*	0.35
F5'	0.2980 (10)	0.163 (2)	0.3464 (9)	0.106 (6)*	0.35
F6'	0.3898 (6)	0.156 (3)	0.4768 (13)	0.090 (4)*	0.35
C5	0.3137 (4)	0.1796 (7)	0.4629 (6)	0.085 (2)
C6	0.3516 (3)	0.5863 (6)	0.5419 (5)	0.0605 (14)
C7	0.3412 (3)	0.4657 (6)	0.4699 (5)	0.0567 (13)
C8	0.3899 (3)	0.4721 (7)	0.3746 (5)	0.0669 (15)
H8A	0.3906	0.3976	0.3183	0.080*
C9	0.4344 (3)	0.5972 (7)	0.3749 (5)	0.0695 (16)
C10	0.4878 (4)	0.6299 (8)	0.2892 (7)	0.095 (2)
H10A	0.4957	0.5597	0.2315	0.114*
C11	0.3172 (4)	0.6211 (7)	0.6547 (5)	0.0803 (18)
H11A	0.3064	0.5282	0.6934	0.120*
H11B	0.2697	0.6771	0.6409	0.120*
H11C	0.3536	0.6800	0.7017	0.120*
C12	0.1486 (3)	0.5855 (6)	0.4656 (5)	0.0627 (14)
C13	0.1609 (3)	0.4653 (6)	0.5384 (5)	0.0626 (14)
C14	0.1135 (3)	0.4723 (7)	0.6353 (5)	0.0697 (16)
H14A	0.1149	0.4000	0.6934	0.084*
C15	0.0661 (3)	0.5957 (7)	0.6333 (5)	0.0733 (17)
C16	0.0042 (4)	0.6480 (10)	0.7196 (5)	0.113 (3)
H16A	0.0198	0.6139	0.7957	0.170*
H16B	−0.0458	0.6057	0.6966	0.170*
H16C	0.0007	0.7564	0.7191	0.170*
C17	0.1843 (4)	0.6182 (7)	0.3531 (5)	0.0807 (18)
H17A	0.1974	0.5248	0.3170	0.121*
H17B	0.2306	0.6778	0.3670	0.121*
H17C	0.1476	0.6730	0.3036	0.121*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
S1	0.0753 (10)	0.0651 (10)	0.0871 (11)	−0.0131 (8)	0.0136 (8)	0.0056 (8)
S2	0.0759 (10)	0.0708 (10)	0.0881 (11)	0.0171 (9)	0.0113 (8)	−0.0066 (9)
O1	0.204 (8)	0.188 (7)	0.184 (7)	−0.033 (6)	0.081 (6)	0.034 (6)
C1	0.064 (3)	0.048 (3)	0.067 (3)	0.001 (3)	0.014 (3)	−0.002 (3)
C2	0.065 (3)	0.049 (3)	0.067 (3)	−0.003 (3)	0.015 (3)	0.005 (3)
C3	0.069 (4)	0.061 (4)	0.120 (6)	−0.001 (3)	0.007 (4)	0.008 (4)
C4	0.142 (14)	0.039 (6)	0.126 (12)	−0.001 (7)	0.056 (13)	0.019 (7)
F1	0.119 (7)	0.061 (4)	0.173 (7)	−0.001 (4)	0.101 (6)	0.028 (4)
F2	0.091 (4)	0.073 (4)	0.145 (6)	−0.022 (3)	−0.024 (4)	−0.008 (4)
F3	0.110 (5)	0.050 (3)	0.195 (8)	−0.021 (3)	0.038 (6)	−0.038 (4)
F4	0.109 (5)	0.104 (5)	0.144 (7)	0.018 (5)	0.001 (5)	0.053 (5)
F5	0.254 (14)	0.072 (5)	0.255 (12)	−0.053 (7)	0.210 (11)	−0.083 (6)
F6	0.093 (6)	0.052 (4)	0.50 (3)	0.020 (5)	−0.074 (10)	−0.006 (12)
C5	0.071 (4)	0.058 (4)	0.125 (6)	0.005 (3)	−0.001 (4)	−0.006 (4)
C6	0.061 (3)	0.054 (3)	0.067 (4)	−0.005 (3)	0.011 (3)	0.003 (3)
C7	0.049 (3)	0.051 (3)	0.071 (3)	0.004 (2)	0.009 (3)	0.003 (3)
C8	0.058 (3)	0.067 (4)	0.078 (4)	0.006 (3)	0.019 (3)	0.004 (3)
C9	0.063 (3)	0.070 (4)	0.077 (4)	0.002 (3)	0.020 (3)	0.018 (3)
C10	0.091 (5)	0.082 (5)	0.115 (6)	−0.014 (4)	0.030 (4)	0.026 (4)
C11	0.091 (4)	0.080 (4)	0.072 (4)	−0.018 (4)	0.020 (3)	−0.011 (3)
C12	0.058 (3)	0.059 (3)	0.072 (4)	0.004 (3)	0.011 (3)	−0.004 (3)
C13	0.063 (3)	0.054 (3)	0.073 (4)	−0.003 (3)	0.017 (3)	−0.003 (3)
C14	0.065 (4)	0.071 (4)	0.074 (4)	−0.010 (3)	0.020 (3)	0.002 (3)
C15	0.059 (3)	0.075 (4)	0.087 (4)	−0.010 (3)	0.012 (3)	−0.018 (3)
C16	0.081 (4)	0.188 (9)	0.075 (4)	−0.047 (5)	0.031 (4)	−0.035 (5)
C17	0.093 (5)	0.073 (4)	0.077 (4)	0.016 (4)	0.018 (3)	0.010 (3)

Geometric parameters (Å, º) top

S1—C9	1.712 (6)	F5'—C5	1.376 (9)
S1—C6	1.725 (5)	F6'—C5	1.326 (9)
S2—C15	1.712 (6)	C6—C7	1.362 (7)
S2—C12	1.709 (5)	C6—C11	1.504 (7)
O1—C10	1.194 (9)	C7—C8	1.430 (7)
C1—C2	1.338 (6)	C8—C9	1.345 (7)
C1—C7	1.478 (7)	C8—H8A	0.9300
C1—C5	1.513 (7)	C9—C10	1.425 (8)
C2—C13	1.466 (7)	C10—H10A	0.9300
C2—C3	1.507 (7)	C11—H11A	0.9600
C3—F1	1.306 (7)	C11—H11B	0.9600
C3—F2'	1.312 (9)	C11—H11C	0.9600
C3—F1'	1.383 (10)	C12—C13	1.368 (7)
C3—F2	1.393 (7)	C12—C17	1.507 (7)
C3—C4	1.47 (2)	C13—C14	1.432 (7)
C3—C4'	1.57 (4)	C14—C15	1.360 (8)
C4—F3	1.343 (9)	C14—H14A	0.9300
C4—F4	1.343 (9)	C15—C16	1.576 (8)
C4—C5	1.55 (2)	C16—H16A	0.9600
F5—C5	1.315 (8)	C16—H16B	0.9600
F6—C5	1.357 (8)	C16—H16C	0.9600
C4'—F4'	1.343 (10)	C17—H17A	0.9600
C4'—F3'	1.343 (10)	C17—H17B	0.9600
C4'—C5	1.41 (3)	C17—H17C	0.9600

C9—S1—C6	92.3 (3)	C11—C6—C12	77.8 (3)
C15—S2—C12	93.0 (3)	S1—C6—C12	126.6 (3)
C2—C1—C7	130.6 (5)	C6—C7—C8	112.7 (5)
C2—C1—C5	110.6 (5)	C6—C7—C1	124.7 (5)
C7—C1—C5	118.8 (5)	C8—C7—C1	122.5 (5)
C1—C2—C13	130.0 (5)	C9—C8—C7	112.9 (5)
C1—C2—C3	110.4 (5)	C9—C8—H8A	123.6
C13—C2—C3	119.6 (5)	C7—C8—H8A	123.6
F2'—C3—F1'	96.9 (10)	C8—C9—C10	123.7 (6)
F1—C3—F2	106.9 (7)	C8—C9—S1	111.6 (4)
F1—C3—C4	110.1 (8)	C10—C9—S1	124.8 (5)
F2—C3—C4	106.7 (7)	O1—C10—C9	120.2 (8)
F1—C3—C2	117.2 (6)	O1—C10—H10A	119.9
F2'—C3—C2	118.5 (9)	C9—C10—H10A	119.9
F1'—C3—C2	100.9 (10)	C6—C11—H11A	109.5
F2—C3—C2	108.3 (5)	C6—C11—H11B	109.5
C4—C3—C2	107.2 (7)	H11A—C11—H11B	109.5
F2'—C3—C4'	126.7 (11)	C6—C11—H11C	109.5
F1'—C3—C4'	105.8 (11)	H11A—C11—H11C	109.5
C2—C3—C4'	103.8 (10)	H11B—C11—H11C	109.5
F3—C4—F4	105.7 (10)	C13—C12—C17	129.2 (5)
F3—C4—C3	119.8 (13)	C13—C12—S2	110.8 (4)
F4—C4—C3	113.8 (13)	C17—C12—S2	119.9 (4)
F3—C4—C5	109.0 (14)	C13—C12—C6	74.5 (3)
F4—C4—C5	101.9 (12)	C17—C12—C6	77.0 (3)
C3—C4—C5	105.2 (7)	S2—C12—C6	127.1 (3)
F4'—C4'—F3'	105.4 (16)	C12—C13—C14	112.4 (5)
F4'—C4'—C5	112.1 (19)	C12—C13—C2	125.3 (5)
F3'—C4'—C5	128 (2)	C14—C13—C2	122.2 (5)
F4'—C4'—C3	96 (2)	C15—C14—C13	112.9 (6)
F3'—C4'—C3	103 (2)	C15—C14—H14A	123.6
C5—C4'—C3	107.0 (15)	C13—C14—H14A	123.6
F6'—C5—C4'	127.5 (16)	C14—C15—C16	130.6 (6)
F6'—C5—F5'	103.8 (11)	C14—C15—S2	110.8 (4)
C4'—C5—F5'	92.5 (12)	C16—C15—S2	118.6 (5)
F5—C5—F6	110.4 (10)	C15—C16—H16A	109.5
F6'—C5—C1	115.5 (12)	C15—C16—H16B	109.5
F5—C5—C1	114.4 (7)	H16A—C16—H16B	109.5
C4'—C5—C1	108.0 (15)	C15—C16—H16C	109.5
F5'—C5—C1	103.9 (10)	H16A—C16—H16C	109.5
F6—C5—C1	108.9 (7)	H16B—C16—H16C	109.5
F5—C5—C4	117.4 (8)	C12—C17—H17A	109.5
F6—C5—C4	100.5 (9)	C12—C17—H17B	109.5
C1—C5—C4	103.9 (7)	H17A—C17—H17B	109.5
C7—C6—C11	130.8 (5)	C12—C17—H17C	109.5
C7—C6—S1	110.5 (4)	H17A—C17—H17C	109.5
C11—C6—S1	118.5 (4)	H17B—C17—H17C	109.5
C7—C6—C12	75.6 (3)

C7—C1—C2—C13	6.8 (10)	F4—C4—C5—F5	129.8 (10)
C5—C1—C2—C13	−171.4 (6)	C3—C4—C5—F5	−111.2 (10)
C7—C1—C2—C3	−176.4 (6)	C3—C4—C5—C4'	−97 (10)
C5—C1—C2—C3	5.5 (6)	C3—C4—C5—F5'	−91.9 (11)
C1—C2—C3—F1	130.0 (7)	F3—C4—C5—F6	−101.4 (11)
C13—C2—C3—F1	−52.8 (9)	F4—C4—C5—F6	10.0 (12)
C1—C2—C3—F2'	−151.7 (10)	C3—C4—C5—F6	129.0 (9)
C13—C2—C3—F2'	25.5 (11)	F3—C4—C5—C1	145.9 (10)
C1—C2—C3—F1'	104.2 (10)	F4—C4—C5—C1	−102.7 (10)
C13—C2—C3—F1'	−78.6 (10)	C3—C4—C5—C1	16.3 (8)
C1—C2—C3—F2	−109.1 (6)	C9—S1—C6—C7	−0.2 (5)
C13—C2—C3—F2	68.0 (7)	C9—S1—C6—C11	176.9 (5)
C1—C2—C3—C4	5.6 (8)	C9—S1—C6—C12	−87.2 (3)
C13—C2—C3—C4	−177.2 (6)	C11—C6—C7—C8	−175.7 (6)
C1—C2—C3—C4'	−5.3 (8)	S1—C6—C7—C8	0.8 (6)
C13—C2—C3—C4'	171.9 (7)	C12—C6—C7—C8	124.9 (4)
F1—C3—C4—F3	94.9 (13)	C11—C6—C7—C1	3.1 (10)
F2—C3—C4—F3	−20.7 (15)	S1—C6—C7—C1	179.7 (4)
C2—C3—C4—F3	−136.5 (12)	C12—C6—C7—C1	−56.2 (5)
F1—C3—C4—F4	−31.5 (13)	C2—C1—C7—C6	43.3 (9)
F2—C3—C4—F4	−147.1 (9)	C5—C1—C7—C6	−138.6 (6)
C2—C3—C4—F4	97.1 (11)	C2—C1—C7—C8	−137.9 (6)
F1—C3—C4—C5	−142.2 (8)	C5—C1—C7—C8	40.1 (8)
F2'—C3—C4—C5	140.4 (12)	C6—C7—C8—C9	−1.3 (7)
F1'—C3—C4—C5	−116.7 (10)	C1—C7—C8—C9	179.9 (5)
F2—C3—C4—C5	102.2 (7)	C7—C8—C9—C10	180.0 (6)
C2—C3—C4—C5	−13.6 (8)	C7—C8—C9—S1	1.1 (6)
F2'—C3—C4'—F4'	30.4 (19)	C6—S1—C9—C8	−0.6 (5)
F1'—C3—C4'—F4'	141.9 (14)	C6—S1—C9—C10	−179.4 (6)
C2—C3—C4'—F4'	−112.3 (12)	C8—C9—C10—O1	175.8 (8)
F1—C3—C4'—F3'	6.9 (18)	S1—C9—C10—O1	−5.4 (12)
F2'—C3—C4'—F3'	−76.9 (17)	C15—S2—C12—C13	−0.3 (5)
F1'—C3—C4'—F3'	34.6 (18)	C15—S2—C12—C17	177.6 (5)
C2—C3—C4'—F3'	140.5 (13)	C15—S2—C12—C6	−86.2 (3)
F1—C3—C4'—C5	−130.4 (10)	C7—C6—C12—C13	72.4 (4)
F2—C3—C4'—C5	114.3 (9)	C11—C6—C12—C13	−65.8 (4)
C2—C3—C4'—C5	3.1 (11)	S1—C6—C12—C13	177.5 (4)
F4'—C4'—C5—F6'	−111 (2)	C7—C6—C12—C17	−65.2 (4)
F3'—C4'—C5—F6'	22 (4)	C11—C6—C12—C17	156.6 (4)
C3—C4'—C5—F6'	144.8 (13)	S1—C6—C12—C17	39.9 (5)
F4'—C4'—C5—F5'	−2 (2)	C7—C6—C12—S2	177.1 (4)
F3'—C4'—C5—F5'	132 (3)	C11—C6—C12—S2	38.8 (5)
C3—C4'—C5—F5'	−105.7 (12)	S1—C6—C12—S2	−77.8 (4)
F4'—C4'—C5—C1	104 (2)	C17—C12—C13—C14	−177.7 (6)
F3'—C4'—C5—C1	−123 (3)	S2—C12—C13—C14	−0.1 (7)
C3—C4'—C5—C1	−0.2 (11)	C6—C12—C13—C14	124.2 (5)
C2—C1—C5—F6'	−153.0 (9)	C17—C12—C13—C2	0.0 (10)
C7—C1—C5—F6'	28.6 (11)	S2—C12—C13—C2	177.6 (5)
C2—C1—C5—F5	115.7 (8)	C6—C12—C13—C2	−58.0 (5)
C7—C1—C5—F5	−62.7 (9)	C1—C2—C13—C12	45.8 (9)
C2—C1—C5—C4'	−3.3 (9)	C3—C2—C13—C12	−130.8 (6)
C7—C1—C5—C4'	178.2 (8)	C1—C2—C13—C14	−136.7 (6)
C2—C1—C5—F5'	94.0 (10)	C3—C2—C13—C14	46.8 (8)
C7—C1—C5—F5'	−84.4 (10)	C12—C13—C14—C15	0.6 (8)
C2—C1—C5—F6	−120.1 (9)	C2—C13—C14—C15	−177.3 (5)
C7—C1—C5—F6	61.4 (10)	C13—C14—C15—C16	179.1 (6)
C2—C1—C5—C4	−13.6 (7)	C13—C14—C15—S2	−0.8 (7)
C7—C1—C5—C4	168.0 (6)	C12—S2—C15—C14	0.6 (5)
C3—C4—C5—F6'	151.0 (12)	C12—S2—C15—C16	−179.2 (5)
F3—C4—C5—F5	18.4 (15)

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1-(2,5-Dimethyl-3-thien­yl)-3,3,4,4,5,5-hexa­fluoro-2-(5-formyl-2-methyl-3-thien­yl)cyclo­pent-1-ene: a new photochromic diaryl­ethene compound

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1-(2,5-Dimethyl-3-thienyl)-3,3,4,4,5,5-hexafluoro-2-(5-formyl-2-methyl-3-thienyl)cyclopent-1-ene: a new photochromic diarylethene compound