Redetermination of AgNb(2)PS(10) revealing a silver deficiency.

ABSTRACT: In comparison with a previous crystallographic study [Goh et al. (2002 ▶). J. Solid State Chem.168, 119-125] of the title compound, silver diniobium tris-(disulfide) tetra-thio-phosphate(V), that reports a full occupation of the silver position and isotropic displacement parameters for the atoms, the current redetermination reveals a silver deficiency with a site-occupation factor of 0.88 (1) and reports all atoms with anisotropic displacement parameters. The structure of Ag(0.88)Nb(2)PS(10) is composed of (∞) (1)[Nb(2)PS(10)] chains, which are built up from pairs of distorted bicapped trigonal-prismatic [NbS(8)] polyhedra forming [Nb(2)S(12)] dimers and of tetra-hedral [PS(4)] groups. These chains are connected via the statistically disordered Ag(+) ions, forming double layers. Adjacent l

SUBMITTER: Do J 

PROVIDER: S-EPMC2977382 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature