Abstract

CsCd(NO 2)3 has a disordered cubic structure ( a 0 = 5.466 A ̊ , space group Pm3) rather than the face-centred cubic A 2A′M(NO 2) 6 structure with a 0 = 11 A ̊ . The cadmium atom has a very high thermal parameter ( U = 0.099 A ̊ 3 ) which is consistent with static disordered displacement of the atom from the equilibrium position. R = 0.058 for 100 observed reflections. CsCd(NO 2) 3 acts as host lattice for many metal ions including Mn(II) and Cr(III) which do not form hexanitrite complexes. The compositions and spectra of these doped complexes suggest local ordering of the NO 2 groups. Unlike many nitrite complexes CsCd(NO 2) 3 undergoes a simple thermal decomposition to CdO and CsNO 3.

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