[Cu12(P2Se6){Se2P(OR)2}8]: Discrete Copper Clusters Containing an Ethane-Like Hexaselenodiphosphate(IV)

Abstract

Most of the structures containing hexaselenodiphosphate(iv), P 2 Se 6 4À , are ternary and quaternary solid-state materials. In addition to the high-temperature reactions of the metals with P and Se, these compounds are usually synthesized by the application of the polychalcophosphate flux method. Notable examples of ternary phases are M 2 P 2 Se 6 (M Pb, [1a] Hg [1b] ) and Tl 4 P 2 Se 6[1c] from Brockner et al., M 4 (P 2 Se 6 ) 3 (M Sb, Bi) [2] , and Ag 4 P 2 Se 6 . [3] The quaternary phases are a,b-KMP 2 Se 6 (M Sb, Bi),