A new mixed-valence lead(II) mangan-ese(II/III) phosphate(V): PbMn(II) 2Mn(III)(PO4)3.

ABSTRACT: The title compound, lead trimanganese tris(orthophosphate), has been synthesized by hydro-thermal methods. In this structure, only two O atoms are in general positions and all others atoms are in the special positions of the Imma space group. Indeed, the atoms in the Wyckoff positions are namely: Pb1 and P1 on 4e (mm2); Mn1 on 4b (2/m); Mn2 and P2 on 8g (2); O1 on 8h (m); O2 on 8i (m). The crystal structure can be viewed as a three-dimensional network of corner- and edge-sharing PO4 tetra-hedra and MnO6 octa-hedra, building two types of chains running along the b axis. The first is an infinite linear chain, formed by alternating Mn(III)O6 octa-hedra and PO4 tetra-hedra which share one vertex. The second chain is built up from two adjacent edge-sharing octa-hedra (Mn(II) 2O10 dimers) whose

SUBMITTER: Alhakmi G 

PROVIDER: S-EPMC3772398 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature