Synthesis of a binuclear copper(I) complex [Cu 2 (PPh 3 ) 6 ( k -OOCH)](ClO 4 ) - insertion reaction of carbon dioxide

Author: Liu Ying-Fan   Zhao Dong   Sun Yu-An   Yang Rui-Na   Fu Peng-Fei  

Publisher: Taylor & Francis Ltd

ISSN: 0095-8972

Source: Journal of Coordination Chemistry, Vol.58, Iss.4, 2005-03, pp. : 301-308

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

A novel binuclear complex [Cu 2 (PPh 3 ) 6 (μ-OOCH)](ClO 4 ) ( II ) was synthesized via the interaction of carbon dioxide with [Cu(PPh 3 ) 2 (BH 4 )] ( I ) in the presence of PPh 3 and NBu 4 (ClO 4 ). It was characterized by elemental analysis and spectroscopic methods as well as by single-crystal X-ray diffraction. Crystals are monoclinic, space group C 2 / c , with a = 25.911(5), b = 13.6361(3), c = 26.929(5) Å, β = 90.21(3)°, V = 9323.1(3) Å 3 , Z = 8 and D c = 1.314 g cm −3 . The formate ligand of II in the solid state displays a near-perfect linear coordination mode as CO 2 and serves as a bridge for the two Cu(PPh 3 ) 3 units with the O-C-O bond angle being 180.0(5)°. A mechanism involving carbon dioxide insertion into the Cu-H bond of [Cu(PPh 3 ) 2 (BH 4 )] ( I ) for the formation of II is proposed.

Related content