Neutral Mo6Q8-clusters with terminal phosphane ligands – a route to water-soluble molecular units of Chevrel phases.

Autor: Novikova, Evgeniya D., Gassan, Alena D., Ivanov, Anton A., Vorotnikov, Yuri A., Shestopalov, Michael A.
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Zdroj: New Journal of Chemistry; 2/7/2022, Vol. 46 Issue 5, p2218-2223, 6p
Abstrakt: Despite the numerous studies on Chevrel phases, their building blocks – molecular compounds containing the {Mo6Q8} cluster core – are hardly presented in the literature. Here we present rare examples of phosphane molybdenum chalcogenide clusters – [{Mo6Q8}(Ph2PC2H4COOH)6] (Q = S or Se) – which have been obtained by the direct interaction of (Bu4N)2[{Mo6Cl8}Cl6] with in situ generated Na2Q in the presence of a phosphane pro-ligand. Crystal structure determination has confirmed the formation of a homoleptic six-substituted neutral complex. The redox and optical properties were also studied. Due to the presence of six carboxylate groups in phosphane ligands, both clusters form a stable solution in alkaline water. Besides the known K7[{Mo6Se8}(CN)6]·8H2O, the compounds obtained here are the only examples of water-soluble complexes of such types. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index