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Synthesis and Crystal Structures of [TeI 3 ][GaI 4 ] and [TeI 3 ][InI 4 ]
Author(s) -
Schulz Lang E.,
Abram U.,
Strähle J.,
Vazquez Lopez E. M.
Publication year - 1998
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(199806)624:6<999::aid-zaac999>3.0.co;2-e
Subject(s) - crystallography , monoclinic crystal system , orthorhombic crystal system , chemistry , octahedron , crystal structure , trigonal crystal system , stereochemistry
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) Å and β = 102.51(6)°. The indium derivative crystallizes in the orthorhombic space group Pna 2 1 (No. 33), a = 14.752(2), b = 7.1915(6) and c = 23.391(5) Å, 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.