Isolation and Structural Elucidation of 15-Nuclear Copper Dihydride Clusters: An Intermediate in the Formation of a Two-Electron Copper Superatom
Résumé
Highly reactive copper-dihydride clusters, [Cu (H) (S CNR ) (C Ph) ](PF ) {R = Bu (1 ), Pr (2 ), Bu (3 )}, are isolated during the reaction of [Cu H {S CN Bu } ](PF ) with ten equivalents of phenylacetylene. They are found to be intermediates in the formation of the earlier reported two-electron superatom [Cu (S CNR ) (C Ph) ] . Better yields are obtained by reacting dithiocarbamate sodium salts, [Cu(CH CN) ](PF ), BH and phenylacetylene. The presence of two hydrides in the isolated clusters is confirmed by the synthesis and characterization of its deuteride analogue [Cu (D) (S CNR ) (C Ph) ] , and a single-crystal neutron structure of 2 . Structural characterization of 1 reveals a new bicapped icosahedral copper(I) cage encapsulating a linear copper dihydride (CuH ) unit. Reaction of 3 with Au(I) salts yields a highly luminescent [AuCu (S CN Bu ) (C Ph) ] cluster.
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Chimie
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Kumarvarma Chakrahari et al - 2020 - Isolation and Structural Elucidation of 15-nuclear Copper.pdf (3.54 Mo)
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