Abstract
A novel binuclear complex [Cu2(PPh3)6(μ-OOCH)](ClO4) (II) was synthesized via the interaction of carbon dioxide with [Cu(PPh3)2(BH4)] (I) in the presence of PPh3 and NBu4(ClO4). 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) Å3, 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 CO2 and serves as a bridge for the two Cu(PPh3)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(PPh3)2(BH4)] (I) for the formation of II is proposed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
