Kristallstruktur von Caesiumacetat,Cs(CH3COO)

Crystal Structure of Cesium Acetate, Cs(CH₃COO) . The crystal structure of cesium acetate, Cs(CH₃COO), was determined from single crystal fourcirclediffractometer data: hexagonal crystal system, P6/m (No. 175), Z = 6, a = 1 488.0(2), c = 397.65(5) pm, V_m = 76.54(2) cm³/mol, R = 0.045, R_w = 0.030. The structure consists of flat layers of acetate anions parallel (001) that are separated by layers of cesium cations. There is a close relationship with the CaF₂ type according to CsO₂(CCH₃): each cesium cation has eight oxygen atoms as nearest neighbours. They form a heavily distorted cube with trapezoidal basal faces. In contrast to CaF₂, these polyhedra are linked via three faces and two edges to a three-dimensional network.