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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.

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.

SUBMITTER: Wang LQ

PROVIDER: S-EPMC3247444 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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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.

Wang Li-Qin LQ Yan Liu-Shui LS Liu Gang G

Acta crystallographica. Section E, Structure reports online 20111029 Pt 11

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 photocycli ...[more]

PMID: 22220062

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1-[5-(3-Chloro-phen-yl)-2-methyl-3-thi-en-yl]-3,3,4,4,5,5-hexa-fluoro-2-(2-methoxy-phen-yl)-cyclo-pent-1-ene.

Project description:The title compound, C(23)H(15)ClF(6)OS, has thienyl and phenyl-ene substituents on the double-bond C atoms of the envelope-shaped cyclo-pentenyl ring. The aromatic systems are aligned at 55.3 (4) (thien-yl) and 60.8 (7)° (phenyl-ene) with respect to the planar C-C=C-C portion of the main central cyclo-pentenyl ring.

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4-{2-[5-(3,5-Difluoro-phen-yl)-2-methyl-thio-phen-3-yl]-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-en-1-yl}-1,5-dimethyl-pyrrole-2-carbonitrile.

Project description:In the title compound, C(23)H(14)F(8)N(2)S, the dihedral angles between the pyrrole and thio-phene groups and the almost planar C-C=C-C unit of the cyclo-pentene ring (r.m.s. deviation = 0.4193?Å) are 43.6?(5) and 50.1?(2)°, respectively. The distance of 3.612?(3)?Å between the potentially reactive C atoms of the two heteroaryl substituents is short enough to enable a photocyclization reaction.

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1,2-Bis[5-(4-cyano-phen-yl)-2-methyl-3-thien-yl]-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-ene: a photochromic diaryl-ethene compound.

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1-(2-Chloro-phen-yl)-2-(2-methyl-5-phenyl-3-thien-yl)-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-ene: a new photochromic diaryl-ethene.

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5-n-Butyl-4-[2-(2-ethyl-1-benzothio-phen-3-yl)-3,3,4,4,5,5-hexa-fluoro-cyclo-pent-1-en-1-yl]thio-phene-2-carbaldehyde.

Project description:The title compound, C(24)H(20)F(6)OS(2), exhibiting photochromic behaviour, has thienyl and benzothienyl substituents attached to the double-bond C atoms of the envelope-shaped cyclo-pentene ring. The mean planes of aromatic systems form dihedral angles of 43.0 (1) (thien-yl) and 73.8 (1)° (benzothien-yl) with the mean plane of the C-C=C-C portion of the cyclo-pentene ring. This conformation avoids steric hindrance between the n-butyl and ethyl substituents. The formyl substituent of the thienyl group, as well as the ethyl substituent of the benzothienyl group, are disordered [occupancies of 0.788 (17):0.212 (17) and 0.64 (5):0.36 (5), respectively].

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3,3,4,4,5,5-Hexa-fluoro-1,2-bis[4-(phenyl-ethyn-yl)phen-yl]-cyclo-pentene.

Project description:The title compound, C(33)H(18)F(6), has a V-shaped conjugated subunit. The dihedral angles between the central cyclo-pentene ring and the directly attached benzene rings are 32.7?(2) and 53.7?(2)°, respectively. The fluoro substituents are disordered, the occupancies refined to a 0.675?(2):0.325?(2) ratio.

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1,2-Bis[5-(9-ethyl-9H-carbazol-3-yl)-2-methyl-thio-phen-3-yl]-3,3,4,4,5,5-hexa-fluoro-cyclo-pentene.

Project description:The title compound, C(43)H(32)F(6)N(2)S(2), is a new symmetrical photochromic diaryl-ethene derivative with 9-ethyl-carbazol-3-yl substituents. The mol-ecule adopts a photoactive anti-parallel conformation [Irie (2000). Chem. Rev.100, 1685-1716; Kobatake et al. (2002). Chem. Commun. pp. 2804-2805], with a dihedral angle between the mean planes of the two thio-phene rings of 56.23?(6)°. The distance between the two reactive C atoms is 3.497?(3)?Å. In the crystal, two mol-ecules are associated through a pair of C-H?F inter-molecular hydrogen bonds, forming a centrosymmetric dimer. Dimers are linked by weak ?-? inter-actions [centroid-centroid distance = 3.8872?(13)?Å], forming chains along the c axis.

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3,3,4,4,5,5-Hexafluoro-1,2-bis-(5-formyl-2-methylsulfanyl-3-thienyl)cyclo-pent-1-ene.

Project description:In the crystal structure of the title diaryl-ethyl-ene compound, C(17)H(10)F(6)O(2)S(4), the two 3-thienyl substituents are aligned at 44.9?(1) and 40.2?(1)° with respect to the -C-C=C-C- fragment of the central cyclo-pentenyl ring. The five-membered cyclo-pentenyl ring adopts an envelope conformation. The flap atom of this ring and the two F atoms bonded to it are disordered over two positions with occupancies 0.810?(5)/0.190?(5).

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3-(4-{3,3,4,4,5,5-Hexafluoro-2-[5-(3-methoxy-phen-yl)-2-methyl-3-thien-yl]cyclo-pent-1-en-yl}-5-methyl-2-thien-yl)benzonitrile.

Project description:The title compound, C(29)H(19)F(6)NOS(2), is a new unsymmetrical photochromic diarylethene derivative with different meta-phenyl substituents. The distance between the two reactive (i.e. can be irradiated to form a new chemical bond) C atoms is 3.501?(4)?Å; the dihedral angles between the mean plane of the main central cyclo-pentene ring and the thio-phene rings are 47.7?(5) and 45.1?(2)°, and those between the thio-phene rings and the adjacent benzene rings are 29.4?(2) and 28.4?(3)°. The three C atoms and the F atoms of hexa-fuorocyclo-pentene ring are disordered over two positions, with site-occupancy factors of 0.751?(4) and 0.249?(4).

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