B. Casari, V. Langer
Aug 1, 2007
Citations
0
Influential Citations
5
Citations
Journal
European Journal of Inorganic Chemistry
Abstract
The title compound, synthesized from Cr VI and Ce IV species, crystallizes in the space group P6 3 with a = 19.3015(2), c = 25.2684(4) A, and Z = 2. The structural design of the title compound differs essentially from structures of known mixed-valence cerium compounds which all form three-dimensional networks. In the title compound the cerium atoms, interlinked by sulfate groups, extend to form layers held together by hydrogen-bonding contacts. Perpendicular to these layers there are 10 A wide channels. One third of the channels host solvent water only, while the other two thirds of the channels also host [Cr(H 2 O) 6 ] 3+ and [Ce(SO 4 ) 3 (H 2 O) 6 ] 3- units, blocking each of these channels once per unit cell, resulting in 14 A long voids.