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4-[4-(Hept­yloxy)benzo­yloxy]phenyl 2-oxo-7-tri­fluoro­methyl-2H-chromene-3-carboxyl­ate

The title compound, C(31)H(27)F(3)O(7), is a liquid crystal and exhibits enanti­otropic SmA and nematic phase transitions. In the crystal, the the 2H-chromene ring system makes dihedral angles of 54.46 (17) and 7.79 (16)°, respectively, with the central benzene ring and 4-(hept­yloxy)benzene ring. T...

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Detalles Bibliográficos
Autores principales: Devarajegowda, H. C., Palakshamurthy, B. S., Harishkumar, H. N., Suchetan, P. A., Sreenivasa, S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3793833/
https://www.ncbi.nlm.nih.gov/pubmed/24109420
http://dx.doi.org/10.1107/S1600536813020679
Descripción
Sumario:The title compound, C(31)H(27)F(3)O(7), is a liquid crystal and exhibits enanti­otropic SmA and nematic phase transitions. In the crystal, the the 2H-chromene ring system makes dihedral angles of 54.46 (17) and 7.79 (16)°, respectively, with the central benzene ring and 4-(hept­yloxy)benzene ring. The three F atoms of the –CF(3) group are disordered over two sets of sites, with an occupancy ratio of 0.62 (3):0.38 (3). The crystal structre features two pairs of C—H⋯O hydrogen bonds, which form inversion dimers and generate R (2) (2)(10) and R (2) (2)(30) ring patterns. C—H⋯O inter­actions along [100] and C—H⋯π inter­actions futher consolidate the packing, leading to a three-dimensional network.