Die Kristallstruktur von Ga3Cl7/ Crystal Structure of Ga3Cl7
Open Access
- 1 January 1990
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 45 (1) , 1-7
- https://doi.org/10.1515/znb-1990-0103
Abstract
Trigallium heptachloride, G a3Cl7, has been prepared from GaCl3 and Ga in sealed glass ampoules. Ga3Cl7 crystallizes in the space group Pna21 (No. 33) with a = 1181.8(1) pm; b = 889.7(1) pm; c = 1057.5(1) pm; Z = 4. The compound is isotypic with KGa2Cl7 -. The Ga2Cl7 - anion has nearly C2 symmetry (gauche conformation) with d̄ (Ga -Clbridg) = 230.3 pm, d̄ (Ga -Clterm) = 214.3 pm and and ∢ Ga -Cl -Ga = 109.0°. The Ga+ ion is coordinated by ten Cl atoms (4 + 6) with d = 346.2 pm. The coordination of Ga+ and the conformation of Ga2Cl7 - are discussed in detail together with related compounds.Keywords
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