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Synthesis and Crystal Structures of [TeI3][GaI4] and [TeI3][InI4]

✍ Scribed by E. Schulz Lang; U. Abram; J. Strähle; E. M. Vazquez Lopez

Publisher
John Wiley and Sons
Year
1998
Tongue
German
Weight
109 KB
Volume
624
Category
Article
ISSN
0372-7874

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✦ Synopsis

The compounds [TeI 3 ][MI 4 ] (M = Ga, In) were obtained as air sensitive black crystals by the reactions of Te, I 2 and Ga or In in vacuum sealed ampoules. The gallium compound crystallizes in the structural type of [SCl 3 ][AlCl 4 ]: monoclinic system, space group Pc (No. 7), a = 7.211(11), b = 7.2340(9), c = 15.67(2) A Ê and b = 102.51(6)°. The indium derivative crystallizes in the orthorhombic space group Pna2 1 (No. 33), a = 14.752(2), b = 7.1915( ) and c = 23.391(5) A Ê , with two crystallographically independent formula units per asymmetric unit.

The structures consist of tetrahedral GaI 4 ± or InI 4 ± and trigonal pyramidal TeI 3 + units. Additionally, in both structures the tellurium atoms establish three weak interactions with iodine atoms of the MI 4 ± units to form a distorted octahedral Te 3 + 3 coordination sphere.

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