Crystallographic Analysis of Compounds with Lindqvist Polyanions: Coherent Assembly, Symmetry, Stability

Abstract

The crystallographic analysis of the structure of three inorganic compounds with Lindqvist polyanions establishes that their structural arrangement is determined by the geometry and symmetry of the [M₆] cation octahedron by the coherent assembly of [M₆O₁₉] building blocks. The relative stability of the structures is estimated from the number of degrees of freedom of their atoms and the fundamental volumes characterizing the degree of symmetrization of the structures.