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

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...

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Veröffentlicht in:	New journal of chemistry 2022-02, Vol.46 (5), p.2218-2223
Hauptverfasser:	Novikova, Evgeniya D, Gassan, Alena D, Ivanov, Anton A, Vorotnikov, Yuri A, Shestopalov, Michael A
Format:	Artikel
Sprache:	eng
Schlagworte:	Clusters Crystal structure Ligands Optical properties Water chemistry
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description	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.
doi_str_mv	10.1039/d1nj05802a
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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. 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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><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/d1nj05802a</doi><tpages>6</tpages></addata></record>
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subjects	Clusters Crystal structure Ligands Optical properties Water chemistry
title	Neutral Mo6Q8-clusters with terminal phosphane ligands – a route to water-soluble molecular units of Chevrel phases
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