CRYSTAL STRUCTURE DETERMINATION OF LI2CA2SI5O13

摘要

Li2Ca2Si5O13, M(r) = 441.56, triclinic, space group P (1) over bar, a = 7.495(1), b = 7.749(2), c = 10.191(2) Angstrom, alpha = 83.28(2)degrees, beta 68.87(2)degrees, gamma = 75.87(2)degrees, V = 535.1(2) Angstrom(3), Z = 2. This structure contains a complex double-chain silicate anion composed of 4- and 5-membered rings of silicate tetrahedra. Lithium is tetrahedrally coordinated and pairs of tetrahedra sharing one edge form binuclear units. Distorted calcium octahedra form an infinite column, each octahedron sharing four edges with four adjacent octahedra. (C) 1995 Academic Press, Inc. [References: 7]