Synthesis and Crystal Structures of [TeI3][GaI4] and [TeI3][InI4]
摘要:
The compounds [TeI3][MI4] (M = Ga, In) were obtained as air sensitive black crystals by the reactions of Te, It and Ga or In in vacuum sealed ampoules. The gallium compound crystallizes in the structural type of [SCl3][AlCl4]: monoclinic system, space group Pc (No. 7), a = 7.211(11), b = 7.2340(9), c = 15.67(2) Angstrom and beta = 102.51(6)degrees. The indium derivative crystallizes in the orthorhombic space group Pna2(1) (No.33), a= 14.752(2), b = 7.1915(6) and c= 23.391(5) Angstrom, with two crystallographically independent formula units per asymmetric unit.The structures consist of tetrahedral GaI4- or InI4- and trigonal pyramidal TeI3+ units. Additionally, in both structures the tellurium atoms establish three weak interactions with iodine atoms of the MI4- units to form a distorted octahedral Te3+3 coordination sphere.