Reactivity of an Octanuclear Copper(I) Siloxide Compound – Isolation of a Copper(II) Oxo Compound with a Supertetrahedral Core12. Issue 12 (23rd June 2015)

• Record Type: Journal Article
• Authors: Schax, Fabian; Limberg, Christian
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 641:Issue 12/13(2015)
• Page Start: 2060
• Page End: 2064
• Publication Date: 2015-06-23
• Subjects: Dioxygen -- Copper -- Polynuclear -- Siloxides -- Supertetrahedron; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.201500228
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: The reactivity of the octanuclear copper(I) siloxide compound [L4 Cu8 ], (1 ) (L 2– = – OPh2 SiOSiPh2 O – ), towards external substrates was tested. In the presence of N‐donor molecules like acetonitrile and propionitrile1 decomposes with formation of cyclic siloxane rings. Contact with 2, 2′‐bipyridine (bipy) leads to the formation of a mixed valent tricopper complex [L2 Cu3 (bipy)2 ], (3 ), which likely represents an intermediate of the disproportion of1 to elemental copper and a mononuclear copper(II) complex [LCu1 (bipy)], (2 ), which was isolated and characterized as the final product. The addition of O2 to1 leads to an unprecedented supertetrahedral copper(II) complex [L6 Cu10 (μ4 ‐O)4 (MeCN)4 ], (4 ), that incorporates four μ4 ‐oxido ligands. The structural parameters for compounds2 –4 were elucidated by single‐crystal X‐ray crystallography. Abstract :