Preparation and molecular structures of the decanuclear diynyl-ruthenium-silver and -copper complexes [M6{μ3-CCCC[Ru(dppe)Cp∗]}4(μ-dppm)2](BF4)2 (M=Ag, Cu)
摘要:
Reactions between [M-2(dppm)(2)(NCMe)(2)]X-2 [M = Ag, X = ClO4; M = Cu, X = BF4] and Ru(C CC CM)(dp-pe)Cp* [M = Ag, Cu; generated in situ from Ru(C CC CH)(dppe)Cp* and AgNO3 or CuCl(PPh3), respectively] afford the cationic mixed-metal cluster diynyl complexes [M-6{mu(3)-C CC C[Ru(dppe)Cp*]}(4)(mu-dppm)(2)]X-2, of which the structures were determined by single-crystal XRD studies. Electrochemical studies indicate that there is no interaction between the ruthenium centres. Reactions between [M-2(mu-dppm)(2)(NCMe)(2)](BF4)(2) and Ru(C CC CM')(dppe)Cp* (M,M' = Cu, Ag) afforded a mixture of Ag-6 Cu-n(n) clusters, as shown by ES-MS and crystallographic studies. Preliminary studies suggest that extensive dis-proportionation occurs in solution. (C) 2010 Elsevier B.V. All rights reserved.
Preparation and molecular structures of the decanuclear diynyl-ruthenium-silver and -copper complexes [M6{μ3-CCCC[Ru(dppe)Cp∗]}4(μ-dppm)2](BF4)2 (M=Ag, Cu)
摘要:
Reactions between [M-2(dppm)(2)(NCMe)(2)]X-2 [M = Ag, X = ClO4; M = Cu, X = BF4] and Ru(C CC CM)(dp-pe)Cp* [M = Ag, Cu; generated in situ from Ru(C CC CH)(dppe)Cp* and AgNO3 or CuCl(PPh3), respectively] afford the cationic mixed-metal cluster diynyl complexes [M-6{mu(3)-C CC C[Ru(dppe)Cp*]}(4)(mu-dppm)(2)]X-2, of which the structures were determined by single-crystal XRD studies. Electrochemical studies indicate that there is no interaction between the ruthenium centres. Reactions between [M-2(mu-dppm)(2)(NCMe)(2)](BF4)(2) and Ru(C CC CM')(dppe)Cp* (M,M' = Cu, Ag) afforded a mixture of Ag-6 Cu-n(n) clusters, as shown by ES-MS and crystallographic studies. Preliminary studies suggest that extensive dis-proportionation occurs in solution. (C) 2010 Elsevier B.V. All rights reserved.