CESIUM NITRATE (II) AT 296-K

CsNO3(II), M(r) = 194.91, trigonal, P3(1) (or its enantiomorph P3(2)), a = 10.902 (2), c = 7.740 (2) angstrom, V = 796.7 (4) angstrom3, Z = 9, D(x) = 3.656 (2) g cm-3, lambda(Ag Kalpha) = 0.56087 angstrom, mu = 102.04 cm-1, F(000) = 774, R = 0.019 and wR = 0.027 for 1036 unique data with I > 3sigma(I). The structure is isomorphous to that of RbNO3(IV). Regarding the Cs and N atoms alone, the structure is of a slightly distorted CsCl type with nine pseudocubes per unit cell. The nitrate groups form almost planar equilateral triangles. Each nitrate plane is essentially parallel to a pair of pseudocube faces and one of the N-O bonds is nearly parallel to a pseudocube cell edge.