Two novel lanthanoid thioantimonates [Sm4(tepa)4(μ-η2,η3-Sb3S7)2(μ-Sb2S4)] (1, tepa = tetraethylenepentamine) and [Eu2(tepa)2(μ-SbS3)(μ-OH)]2(SbS4)(OH)·H2O (2) were solvothermally synthesized. Compound 1 represents the only example of different types of [Sb3S7]5− and [Sb2S4]2− anions coexisting in the same lanthanoid thioantimonate framework, while 2 displays rare mixed-valent Sb3+/Sb5+ character with the Sb3+ in a noncondensed pyramid [SbIIIS3]3−. The theoretical band structure and luminescence properties have also been investigated.
Dalton Transactions
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