THE PREPARATION, PROPERTIES AND CRYSTAL-STRUCTURE OF A SALT CONTAINING THE HEXABROMOCHROMATE(III) ANION

Authors
HALEPOTO DM LARKWORTHY LF POVEY DC SIDDIQUI RA SMITH GW
Citation
Dm. Halepoto et al., THE PREPARATION, PROPERTIES AND CRYSTAL-STRUCTURE OF A SALT CONTAINING THE HEXABROMOCHROMATE(III) ANION, Inorganica Chimica Acta, 227(1), 1994, pp. 167-170
Citations number
15
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganica Chimica Acta → ACNP
ISSN journal
00201693
Volume
227
Issue
1
Year of publication
1994
Pages
167 - 170
Database
ISI
SICI code
0020-1693(1994)227:1<167:TPPACO>2.0.ZU;2-T
Abstract
The hexabromochromate(III) anion, otherwise known only in Cs2LiCrBr6, has been stabilised in the salt [4-BrC6H4NH3](6)[CrBr6]Br-3.2CH(3)CO(2 )H which forms dark green crystals, space group P2(1)/a, a = 10.665(4) , b = 24.650(7), c = 11.464(3) Angstrom, beta = 91.81(3)degrees. The [ CrBr6](3-) anion is sited on a centre of symmetry and shows little dep arture from octahedral symmetry. The Cr-Br bond distnces range from 2. 513(1) to 2.521(1) Angstrom, and the Br-Cr-Br angles are 180 degrees o r close to 90 degrees. The magnetic behaviour and d-d spectrum are typ ical of an octahedral chromium(III) complex.