Literature DB >> 22220062

2-(1,2-Dimethyl-1H-indol-3-yl)-1-{5-[3-(1,3-dioxolan-2-yl)phen-yl]-2-methyl-thio-phen-3-yl}-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-ene.

Li-Qin Wang, Liu-Shui Yan, Gang Liu.   

Abstract

The title compound, C(29)H(23)F(6)NO(2)S, a member of a new family of photochromic diaryl-ethene compounds having an unsymmetrically substituted hexa-fluoro-cyclo-pentene unit, displays dihedral angles between the indole and thio-phene rings of 52.5 (4)°, and between the indole ring and the planar C-C=C-C unit of the cyclopentene ring of 53.8 (6)°. The distance between the potentially reactive C atoms from the two heteroaryl substituents of 3.817 (6) Å is proven to be short enough for photocyclization to occur.

Entities:  

Year:  2011        PMID: 22220062      PMCID: PMC3247444          DOI: 10.1107/S1600536811043509

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For literature on photochromic diaryl­ethene compounds, see: Pu et al. (2007 ▶, 2010 ▶); Yamamoto et al. (2003 ▶).

Experimental

Crystal data

C29H23F6NO2S M = 563.54 Monoclinic, a = 10.7364 (13) Å b = 9.8983 (12) Å c = 24.020 (3) Å β = 93.151 (1)° V = 2548.8 (5) Å3 Z = 4 Mo Kα radiation μ = 0.20 mm−1 T = 296 K 0.50 × 0.38 × 0.30 mm

Data collection

Bruker SMART APEX diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.906, T max = 0.942 22213 measured reflections 5816 independent reflections 4512 reflections with I > 2σ(I) R int = 0.024

Refinement

R[F 2 > 2σ(F 2)] = 0.041 wR(F 2) = 0.126 S = 1.03 5816 reflections 355 parameters H-atom parameters constrained Δρmax = 0.25 e Å−3 Δρmin = −0.26 e Å−3 Data collection: SMART (Bruker, 1997 ▶); cell refinement: SAINT (Bruker, 1997 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL. Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536811043509/ng5249sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536811043509/ng5249Isup2.hkl Supplementary material file. DOI: 10.1107/S1600536811043509/ng5249Isup3.cml Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C29H23F6NO2SF(000) = 1160
Mr = 563.54Dx = 1.469 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
a = 10.7364 (13) ÅCell parameters from 8530 reflections
b = 9.8983 (12) Åθ = 2.5–28.0°
c = 24.020 (3) ŵ = 0.20 mm1
β = 93.151 (1)°T = 296 K
V = 2548.8 (5) Å3Block, yellow
Z = 40.50 × 0.38 × 0.30 mm
Bruker SMART APEX diffractometer5816 independent reflections
Radiation source: fine-focus sealed tube4512 reflections with I > 2σ(I)
graphiteRint = 0.024
φ and ω scansθmax = 27.5°, θmin = 2.6°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)h = −13→13
Tmin = 0.906, Tmax = 0.942k = −12→12
22213 measured reflectionsl = −31→31
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.041Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.126H-atom parameters constrained
S = 1.03w = 1/[σ2(Fo2) + (0.0649P)2 + 0.789P] where P = (Fo2 + 2Fc2)/3
5816 reflections(Δ/σ)max = 0.011
355 parametersΔρmax = 0.25 e Å3
0 restraintsΔρmin = −0.26 e Å3
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.
xyzUiso*/Ueq
S10.46926 (4)0.75926 (5)0.44072 (2)0.05075 (14)
C20.5797 (3)1.4850 (2)0.26912 (11)0.0767 (7)
H2A0.54681.51240.23240.092*
H2B0.67011.48590.26960.092*
C10.5343 (2)1.5767 (2)0.31281 (11)0.0697 (6)
H1A0.59361.64860.32150.084*
H1B0.45431.61620.30120.084*
C30.4832 (2)1.3650 (2)0.33581 (9)0.0574 (5)
H30.39191.36420.33110.069*
O10.52349 (16)1.48886 (14)0.35886 (7)0.0691 (4)
O20.53560 (19)1.35553 (16)0.28268 (7)0.0788 (5)
C90.44801 (16)1.14124 (17)0.38049 (7)0.0424 (4)
H90.36741.14220.36420.051*
C80.48836 (15)1.03020 (17)0.41218 (7)0.0394 (4)
C70.60943 (17)1.0324 (2)0.43654 (8)0.0477 (4)
H70.63810.95960.45810.057*
C60.68702 (18)1.1412 (2)0.42901 (8)0.0550 (5)
H60.76761.14090.44540.066*
C40.52623 (17)1.25041 (18)0.37281 (8)0.0453 (4)
C50.64630 (18)1.2503 (2)0.39749 (8)0.0523 (5)
H50.69891.32350.39270.063*
C100.40687 (16)0.91279 (16)0.41941 (7)0.0392 (4)
C130.32653 (16)0.68064 (17)0.43779 (7)0.0438 (4)
C120.23425 (15)0.76930 (16)0.42070 (7)0.0372 (3)
C110.28040 (15)0.90194 (16)0.41100 (7)0.0390 (4)
H110.22930.97410.40000.047*
C140.3162 (2)0.5367 (2)0.45587 (10)0.0615 (5)
H14A0.23820.52350.47280.092*
H14B0.38370.51570.48240.092*
H14C0.32010.47850.42400.092*
C190.04988 (15)0.62631 (16)0.38624 (6)0.0351 (3)
C150.10223 (15)0.72872 (15)0.41630 (6)0.0357 (3)
C18−0.08018 (16)0.60133 (17)0.40400 (7)0.0412 (4)
C160.00880 (17)0.79637 (17)0.45098 (7)0.0419 (4)
C17−0.11661 (17)0.73266 (19)0.43227 (8)0.0467 (4)
C270.09376 (15)0.40600 (16)0.33100 (7)0.0388 (3)
C210.15871 (16)0.60655 (17)0.29688 (7)0.0394 (4)
C200.10126 (15)0.54940 (16)0.34138 (6)0.0367 (3)
C260.05000 (19)0.29491 (18)0.35967 (8)0.0495 (4)
H260.01450.30590.39380.059*
C220.14977 (16)0.38410 (17)0.28003 (7)0.0424 (4)
C230.1598 (2)0.25562 (19)0.25678 (9)0.0539 (5)
H230.19630.24290.22300.065*
C250.0604 (2)0.16781 (19)0.33630 (10)0.0590 (5)
H250.03080.09320.35510.071*
C240.1139 (2)0.1490 (2)0.28563 (10)0.0604 (5)
H240.11860.06230.27100.072*
C280.17998 (19)0.75138 (18)0.28411 (8)0.0500 (4)
H28A0.26670.77250.29100.075*
H28B0.13090.80660.30740.075*
H28C0.15610.76860.24570.075*
C290.2481 (2)0.5262 (2)0.20780 (8)0.0638 (6)
H29A0.30580.45390.20250.096*
H29B0.29190.61080.20860.096*
H29C0.18550.52650.17770.096*
N10.18883 (14)0.50697 (15)0.26043 (6)0.0442 (3)
F6−0.08404 (11)0.49895 (11)0.44167 (5)0.0586 (3)
F5−0.16255 (10)0.56709 (13)0.36180 (5)0.0624 (3)
F4−0.19297 (12)0.71618 (14)0.47397 (6)0.0710 (4)
F20.00594 (12)0.93212 (11)0.44437 (6)0.0672 (3)
F10.03219 (11)0.77538 (14)0.50619 (4)0.0639 (3)
F3−0.17684 (12)0.81256 (14)0.39387 (6)0.0727 (4)
U11U22U33U12U13U23
S10.0373 (2)0.0444 (3)0.0708 (3)0.00047 (18)0.0052 (2)0.0026 (2)
C20.0806 (16)0.0674 (15)0.0844 (16)−0.0038 (12)0.0267 (13)0.0159 (12)
C10.0631 (14)0.0481 (11)0.0991 (18)−0.0011 (10)0.0144 (12)0.0125 (11)
C30.0507 (11)0.0501 (11)0.0722 (13)−0.0103 (9)0.0109 (10)0.0030 (9)
O10.0832 (11)0.0417 (7)0.0850 (11)−0.0074 (7)0.0272 (9)−0.0044 (7)
O20.1211 (15)0.0564 (9)0.0603 (9)−0.0133 (9)0.0182 (9)0.0006 (7)
C90.0356 (8)0.0440 (9)0.0476 (9)−0.0075 (7)0.0042 (7)−0.0071 (7)
C80.0384 (8)0.0429 (9)0.0374 (8)−0.0070 (7)0.0063 (6)−0.0094 (7)
C70.0415 (9)0.0552 (11)0.0461 (9)−0.0045 (8)0.0002 (7)−0.0056 (8)
C60.0385 (9)0.0708 (13)0.0552 (11)−0.0129 (9)−0.0019 (8)−0.0087 (10)
C40.0434 (9)0.0431 (9)0.0502 (10)−0.0082 (7)0.0109 (7)−0.0078 (7)
C50.0448 (10)0.0540 (11)0.0589 (11)−0.0199 (8)0.0092 (8)−0.0110 (9)
C100.0411 (9)0.0377 (8)0.0391 (8)−0.0045 (7)0.0053 (7)−0.0053 (6)
C130.0425 (9)0.0388 (9)0.0508 (10)−0.0024 (7)0.0091 (7)−0.0007 (7)
C120.0391 (8)0.0367 (8)0.0361 (8)−0.0040 (6)0.0060 (6)−0.0034 (6)
C110.0392 (8)0.0352 (8)0.0425 (8)−0.0029 (6)0.0013 (7)−0.0012 (6)
C140.0535 (12)0.0451 (11)0.0870 (15)0.0018 (9)0.0132 (11)0.0143 (10)
C190.0383 (8)0.0342 (8)0.0330 (7)−0.0025 (6)0.0045 (6)0.0039 (6)
C150.0383 (8)0.0343 (8)0.0349 (7)−0.0024 (6)0.0059 (6)0.0021 (6)
C180.0384 (9)0.0442 (9)0.0409 (8)−0.0072 (7)0.0021 (7)0.0051 (7)
C160.0494 (10)0.0380 (8)0.0391 (8)−0.0008 (7)0.0109 (7)−0.0005 (7)
C170.0409 (9)0.0526 (10)0.0476 (9)0.0046 (8)0.0105 (7)0.0065 (8)
C270.0403 (9)0.0367 (8)0.0393 (8)−0.0028 (7)−0.0003 (7)−0.0005 (6)
C210.0408 (9)0.0404 (9)0.0373 (8)−0.0059 (7)0.0040 (7)−0.0007 (6)
C200.0395 (8)0.0350 (8)0.0358 (8)−0.0060 (6)0.0030 (6)0.0002 (6)
C260.0570 (11)0.0399 (9)0.0515 (10)−0.0055 (8)0.0033 (8)0.0063 (8)
C220.0433 (9)0.0405 (9)0.0431 (9)−0.0005 (7)0.0004 (7)−0.0043 (7)
C230.0571 (11)0.0481 (10)0.0564 (11)0.0054 (9)0.0019 (9)−0.0123 (8)
C250.0664 (13)0.0358 (9)0.0739 (13)−0.0056 (9)−0.0037 (11)0.0095 (9)
C240.0649 (13)0.0373 (10)0.0779 (14)0.0043 (9)−0.0067 (11)−0.0090 (9)
C280.0606 (11)0.0437 (10)0.0465 (10)−0.0117 (8)0.0104 (8)0.0052 (7)
C290.0730 (14)0.0741 (14)0.0465 (10)−0.0085 (11)0.0246 (10)−0.0059 (10)
N10.0489 (8)0.0463 (8)0.0385 (7)−0.0040 (6)0.0108 (6)−0.0025 (6)
F60.0633 (7)0.0500 (6)0.0646 (7)−0.0054 (5)0.0230 (6)0.0172 (5)
F50.0442 (6)0.0782 (8)0.0638 (7)−0.0133 (5)−0.0051 (5)−0.0084 (6)
F40.0568 (7)0.0845 (9)0.0753 (8)−0.0072 (6)0.0349 (6)−0.0066 (7)
F20.0781 (8)0.0367 (6)0.0900 (9)0.0017 (5)0.0336 (7)−0.0054 (6)
F10.0649 (8)0.0909 (9)0.0365 (5)−0.0039 (6)0.0086 (5)−0.0064 (5)
F30.0695 (8)0.0693 (8)0.0777 (8)0.0233 (7)−0.0101 (7)0.0093 (7)
S1—C131.7167 (18)C19—C201.453 (2)
S1—C101.7269 (18)C19—C181.503 (2)
C2—O21.411 (3)C15—C161.497 (2)
C2—C11.490 (4)C18—F51.351 (2)
C2—H2A0.9700C18—F61.3608 (19)
C2—H2B0.9700C18—C171.527 (3)
C1—O11.417 (3)C16—F11.352 (2)
C1—H1A0.9700C16—F21.353 (2)
C1—H1B0.9700C16—C171.532 (3)
C3—O11.404 (2)C17—F41.339 (2)
C3—O21.426 (3)C17—F31.352 (2)
C3—C41.498 (3)C27—C261.393 (2)
C3—H30.9800C27—C221.410 (2)
C9—C41.387 (2)C27—C201.443 (2)
C9—C81.392 (2)C21—N11.369 (2)
C9—H90.9300C21—C201.384 (2)
C8—C71.396 (2)C21—C281.486 (2)
C8—C101.471 (2)C26—C251.385 (3)
C7—C61.380 (3)C26—H260.9300
C7—H70.9300C22—N11.378 (2)
C6—C51.376 (3)C22—C231.395 (2)
C6—H60.9300C23—C241.369 (3)
C4—C51.389 (3)C23—H230.9300
C5—H50.9300C25—C241.387 (3)
C10—C111.366 (2)C25—H250.9300
C13—C121.369 (2)C24—H240.9300
C13—C141.496 (2)C28—H28A0.9600
C12—C111.427 (2)C28—H28B0.9600
C12—C151.471 (2)C28—H28C0.9600
C11—H110.9300C29—N11.458 (2)
C14—H14A0.9600C29—H29A0.9600
C14—H14B0.9600C29—H29B0.9600
C14—H14C0.9600C29—H29C0.9600
C19—C151.349 (2)
C13—S1—C1093.21 (8)C19—C15—C12127.95 (15)
O2—C2—C1105.30 (19)C19—C15—C16111.21 (14)
O2—C2—H2A110.7C12—C15—C16120.68 (14)
C1—C2—H2A110.7F5—C18—F6105.62 (13)
O2—C2—H2B110.7F5—C18—C19114.11 (14)
C1—C2—H2B110.7F6—C18—C19111.96 (14)
H2A—C2—H2B108.8F5—C18—C17111.96 (15)
O1—C1—C2102.70 (18)F6—C18—C17108.68 (14)
O1—C1—H1A111.2C19—C18—C17104.53 (13)
C2—C1—H1A111.2F1—C16—F2105.63 (14)
O1—C1—H1B111.2F1—C16—C15112.52 (15)
C2—C1—H1B111.2F2—C16—C15112.99 (13)
H1A—C1—H1B109.1F1—C16—C17109.72 (14)
O1—C3—O2106.39 (15)F2—C16—C17111.13 (15)
O1—C3—C4110.41 (17)C15—C16—C17104.93 (14)
O2—C3—C4110.92 (17)F4—C17—F3106.98 (15)
O1—C3—H3109.7F4—C17—C18114.29 (15)
O2—C3—H3109.7F3—C17—C18108.60 (15)
C4—C3—H3109.7F4—C17—C16113.28 (15)
C3—O1—C1105.36 (17)F3—C17—C16109.82 (15)
C2—O2—C3107.51 (17)C18—C17—C16103.79 (14)
C4—C9—C8121.01 (17)C26—C27—C22118.65 (16)
C4—C9—H9119.5C26—C27—C20135.12 (16)
C8—C9—H9119.5C22—C27—C20106.19 (14)
C9—C8—C7118.14 (16)N1—C21—C20109.31 (14)
C9—C8—C10121.28 (15)N1—C21—C28121.21 (15)
C7—C8—C10120.58 (16)C20—C21—C28129.32 (16)
C6—C7—C8120.79 (19)C21—C20—C27106.96 (14)
C6—C7—H7119.6C21—C20—C19124.20 (15)
C8—C7—H7119.6C27—C20—C19128.61 (14)
C7—C6—C5120.59 (18)C25—C26—C27118.68 (18)
C7—C6—H6119.7C25—C26—H26120.7
C5—C6—H6119.7C27—C26—H26120.7
C9—C4—C5119.80 (18)N1—C22—C23129.50 (17)
C9—C4—C3119.96 (17)N1—C22—C27108.26 (14)
C5—C4—C3120.18 (17)C23—C22—C27122.24 (17)
C6—C5—C4119.67 (17)C24—C23—C22117.54 (19)
C6—C5—H5120.2C24—C23—H23121.2
C4—C5—H5120.2C22—C23—H23121.2
C11—C10—C8129.61 (16)C26—C25—C24121.65 (19)
C11—C10—S1109.93 (12)C26—C25—H25119.2
C8—C10—S1120.45 (13)C24—C25—H25119.2
C12—C13—C14129.32 (17)C23—C24—C25121.21 (18)
C12—C13—S1110.56 (13)C23—C24—H24119.4
C14—C13—S1120.02 (14)C25—C24—H24119.4
C13—C12—C11112.74 (15)C21—C28—H28A109.5
C13—C12—C15121.65 (15)C21—C28—H28B109.5
C11—C12—C15125.54 (15)H28A—C28—H28B109.5
C10—C11—C12113.54 (15)C21—C28—H28C109.5
C10—C11—H11123.2H28A—C28—H28C109.5
C12—C11—H11123.2H28B—C28—H28C109.5
C13—C14—H14A109.5N1—C29—H29A109.5
C13—C14—H14B109.5N1—C29—H29B109.5
H14A—C14—H14B109.5H29A—C29—H29B109.5
C13—C14—H14C109.5N1—C29—H29C109.5
H14A—C14—H14C109.5H29A—C29—H29C109.5
H14B—C14—H14C109.5H29B—C29—H29C109.5
C15—C19—C20128.81 (15)C21—N1—C22109.27 (13)
C15—C19—C18109.75 (14)C21—N1—C29126.17 (16)
C20—C19—C18121.40 (14)C22—N1—C29124.52 (15)
O2—C2—C1—O126.9 (3)C19—C15—C16—F2−128.64 (16)
O2—C3—O1—C131.8 (2)C12—C15—C16—F255.7 (2)
C4—C3—O1—C1152.24 (17)C19—C15—C16—C17−7.41 (18)
C2—C1—O1—C3−35.9 (2)C12—C15—C16—C17176.91 (14)
C1—C2—O2—C3−8.2 (3)F5—C18—C17—F488.26 (18)
O1—C3—O2—C2−14.1 (3)F6—C18—C17—F4−28.0 (2)
C4—C3—O2—C2−134.2 (2)C19—C18—C17—F4−147.72 (15)
C4—C9—C8—C70.7 (2)F5—C18—C17—F3−31.07 (19)
C4—C9—C8—C10−178.57 (15)F6—C18—C17—F3−147.36 (14)
C9—C8—C7—C6−0.5 (3)C19—C18—C17—F392.94 (16)
C10—C8—C7—C6178.79 (16)F5—C18—C17—C16−147.87 (14)
C8—C7—C6—C50.3 (3)F6—C18—C17—C1695.84 (15)
C8—C9—C4—C5−0.7 (3)C19—C18—C17—C16−23.86 (16)
C8—C9—C4—C3176.42 (16)F1—C16—C17—F422.7 (2)
O1—C3—C4—C9140.83 (17)F2—C16—C17—F4−93.70 (18)
O2—C3—C4—C9−101.5 (2)C15—C16—C17—F4143.86 (15)
O1—C3—C4—C5−42.0 (2)F1—C16—C17—F3142.28 (15)
O2—C3—C4—C575.6 (2)F2—C16—C17—F325.83 (19)
C7—C6—C5—C4−0.3 (3)C15—C16—C17—F3−96.61 (16)
C9—C4—C5—C60.5 (3)F1—C16—C17—C18−101.77 (15)
C3—C4—C5—C6−176.59 (18)F2—C16—C17—C18141.78 (14)
C9—C8—C10—C11−17.9 (3)C15—C16—C17—C1819.34 (17)
C7—C8—C10—C11162.90 (17)N1—C21—C20—C27−1.06 (19)
C9—C8—C10—S1161.20 (13)C28—C21—C20—C27174.27 (18)
C7—C8—C10—S1−18.0 (2)N1—C21—C20—C19−176.00 (15)
C13—S1—C10—C110.47 (13)C28—C21—C20—C19−0.7 (3)
C13—S1—C10—C8−178.77 (14)C26—C27—C20—C21178.3 (2)
C10—S1—C13—C120.33 (14)C22—C27—C20—C210.73 (19)
C10—S1—C13—C14−176.36 (16)C26—C27—C20—C19−7.1 (3)
C14—C13—C12—C11175.27 (19)C22—C27—C20—C19175.36 (16)
S1—C13—C12—C11−1.02 (19)C15—C19—C20—C21−47.4 (3)
C14—C13—C12—C15−1.8 (3)C18—C19—C20—C21130.03 (17)
S1—C13—C12—C15−178.09 (12)C15—C19—C20—C27138.83 (19)
C8—C10—C11—C12178.01 (15)C18—C19—C20—C27−43.8 (2)
S1—C10—C11—C12−1.14 (18)C22—C27—C26—C25−1.6 (3)
C13—C12—C11—C101.4 (2)C20—C27—C26—C25−178.92 (19)
C15—C12—C11—C10178.36 (15)C26—C27—C22—N1−178.17 (16)
C20—C19—C15—C12−15.4 (3)C20—C27—C22—N1−0.14 (19)
C18—C19—C15—C12166.98 (15)C26—C27—C22—C231.7 (3)
C20—C19—C15—C16169.35 (16)C20—C27—C22—C23179.72 (17)
C18—C19—C15—C16−8.30 (19)N1—C22—C23—C24179.24 (19)
C13—C12—C15—C19−56.5 (2)C27—C22—C23—C24−0.6 (3)
C11—C12—C15—C19126.83 (19)C27—C26—C25—C240.5 (3)
C13—C12—C15—C16118.39 (18)C22—C23—C24—C25−0.6 (3)
C11—C12—C15—C16−58.3 (2)C26—C25—C24—C230.6 (3)
C15—C19—C18—F5143.23 (15)C20—C21—N1—C221.0 (2)
C20—C19—C18—F5−34.6 (2)C28—C21—N1—C22−174.78 (17)
C15—C19—C18—F6−96.87 (17)C20—C21—N1—C29178.59 (18)
C20—C19—C18—F685.28 (18)C28—C21—N1—C292.8 (3)
C15—C19—C18—C1720.60 (18)C23—C22—N1—C21179.63 (19)
C20—C19—C18—C17−157.26 (15)C27—C22—N1—C21−0.52 (19)
C19—C15—C16—F1111.83 (16)C23—C22—N1—C292.0 (3)
C12—C15—C16—F1−63.85 (19)C27—C22—N1—C29−178.16 (18)
  3 in total

1.  Absolute asymmetric photocyclization of a photochromic diarylethene derivative in single crystals.

Authors:  Satoshi Yamamoto; Kenji Matsuda; Masahiro Irie
Journal:  Angew Chem Int Ed Engl       Date:  2003-04-11       Impact factor: 15.336

2.  Efficient synthesis and properties of isomeric photochromic diarylethenes having a pyrrole unit.

Authors:  Shouzhi Pu; Gang Liu; Liang Shen; Jingkun Xu
Journal:  Org Lett       Date:  2007-05-02       Impact factor: 6.005

3.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

  3 in total

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