Dichloro-bis(2-chloro-2-phenyl-vinyl)Te(IV) and dibromo-bis(2-bromo-2-phenyl-vinyl)Te(IV): supramolecular self-assembly through different π-aryl interactions

Abstract

Abstract C16H12Cl4Te, (1), Mr = 473.66, P21/c, a = 8.3919(9), b = 14.474(1), c = 14.585(1) Å, β = 94.057(9)°, Z = 4, R 1 = 0.0378. C16H12Br4Te, (2), M r = 651.50, Pnma, a = 19.159(2), b = 16.787(1), c = 5.781(1) Å, Z = 4, R 1 = 0.0437. In both compounds the primary geometry about the TeIV atom is a pseudo-trigonal-bipyramidal arrangement, with two halide atoms in apical positions, and the lone pair of electrons and C atoms in the equatorial plane. The TeIV atoms are involved in secondary interactions resulting in the self-assembly of a chain-like supramolecular array in (1) and into a three dimensional supramolecular array in (2). Compound (1) has a Z configuration with the chlorine atom and the tellurium moiety bonded at the same side in adjacent atoms. In (2) the bromine atom and the dibromotellurium moiety are bonded at adjacent carbons in a cis fashion.