Synthese und Strukturen neuer selenido‐ und selenolatoverbrückter Kupfercluster: [Cu38Se13(SePh)12(dppb)6] (1), [Cu(dppp)2][Cu25Se4(SePh)18(dppp)2] (2), [Cu36Se5(SePh)26(dppa)4] (3), [Cu58Se16(SePh)24(dppa)6] (4) und [Cu3(SeMes)3(dppm)] (5) |
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Authors: | Marco Bettenhausen,Andreas Eichhö fer,Dieter Fenske,Marcus Semmelmann |
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Abstract: | Syntheses and Crystal Structures of new Selenido‐ and Selenolato‐bridged Copper Clusters: [Cu38Se13(SePh)12(dppb)6] (1), [Cu(dppp)2][Cu25Se4(SePh)18(dppp)2] (2), [Cu36Se5(SePh)26(dppa)4] (3), [Cu58Se16(SePh)24(dppa)6] (4), and [Cu3(SeMes)3(dppm)] (5) The reactions of copper(I) chloride or copper(I) acetate with monodentate phosphine ligands (PR3; R = organic group) and Se(SiMe3)2 have already lead to the formation of CuSe clusters with up to 146 copper and 73 selenium atoms. If the starting materials and the bidentate phosphine ligands (Ph2P–(CH2)n–PPh2, n = 1: dppm, n = 3: dppp, n = 4: dppb; Ph2P–C≡C–PPh2: dppa) and silylated chalcogen derivates are changed (RSeSiMe3; R = Ph, Mes) a series of new CuSe clusters can be synthesized. From single crystal X‐ray structure analysis one can characterise [Cu38Se13(SePh)12(dppb)6] ( 1 ), [Cu(dppp)2] · [Cu25Se4(SePh)18(dppp)2] ( 2 ), [Cu36Se5(SePh)26(dppa)4] ( 3 ), [Cu58Se16(SePh)24(dppa)6] ( 4 ) and [Cu3(SeMes)3(dppm)] ( 5 ). In this new class of CuSe clusters, compounds 1 and 4 possess a spherical cluster skeleton, wheras 2 and 3 have a layered cluster core. |
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Keywords: | Copper Selenium Cluster compounds Bidentate phosphine ligands |
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