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Issue 4, 2010
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Structural diversity of rare earth and transition metal thiophosphates

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Abstract

Technological interest in the design of solid state materials has stimulated recent research into the development of mild molten polychalcophosphate salt fluxes for the synthesis of complex, multinary rare earth and transition metal thiophosphate compounds. The reaction pathways from elemental or metal sulfide sources can be influenced by a variety of often interdependent factors of which counter cation sizes and charges, basicity, and temperature are of paramount importance. In rare earth and transition metal containing thiophosphates the dominating structural building units are tetrahedral [PS4]3− or ethane-like [P2S6]4− anions. Hierarchical topological relations between individual members of structural families of the type AmMnPySz (A = alkali metal, M = rare earth or transition metal) can be established that provide a detailed insight into probable mechanisms of formation. The findings enable the development of guidelines for the employment of suitable counter cations in controlling the condensation of small species into chains, layers or frameworks.

Graphical abstract: Structural diversity of rare earth and transition metal thiophosphates

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Article information


Submitted
19 Aug 2009
Accepted
13 Oct 2009
First published
10 Nov 2009

CrystEngComm, 2010,12, 1003-1015
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Structural diversity of rare earth and transition metal thiophosphates

Y. Wu and W. Bensch, CrystEngComm, 2010, 12, 1003
DOI: 10.1039/B917184N

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