Inorganic Chemistry, Vol.45, No.22, 8835-8837, 2006
K(3)Ln(AsS4)(2) (Ln = Nd, Sm, Gd): the first rare earth thioarsenate compounds with infinite straight (1)(infinity)[Ln(AsS4)(2)](3-) chains
The structures of the novel compounds K(3)Ln( AsS4)(2) ( Ln = Nd, Sm, Gd) contain infinite straight (1)(infinity)[ Ln( AsS4)(2)](3-) anionic chains which are composed of interconnected LnS(8) polyhedra and AsS4 tetrahedra. The compounds were synthesized via reactions of Ln metals with in-situ-formed potassium polythioarsenate fluxes.