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• W1966058654 abstract "The sulfido-bridged cluster Ru3(CO)9(μ3-S)2 (1) has been allowed to react with the redox-active diphosphine ligand 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd) in the presence of Me3NO to give the new cluster Ru3(CO)7(bpcd)(μ3-S)2 (2) in 61% yield. The ancillary bpcd in 2 is bound at one of the basal ruthenium sites in a chelating fashion, being derived by the replacement of axial and equatorial CO groups. This cluster represents the first example of a cluster derived from Ru3(CO)9(μ3-S)2 that contains a chelating diphosphine ligand. Cluster 2 has been characterized in solution by IR and NMR (1H and 31P) spectroscopies and in the solid state by X-ray diffraction analysis. Ru3(CO)7(bpcd)(μ3-S)2, which exists as two crystallographically independent molecules in the unit cell, crystallizes in the monoclinic space group P21/c, a= 19.451(1), b = 21.865(2) Å, Z = 8, Dcalc = 1.702 cm−3; R = 0.0411, Rw = 0.0447 for 5622 observed reflections. The redox properties of 2 were explored by cyclic voltammetry in MeCN, which revealed the presence of a reversible one-electron reduction process (bpcd based) and an irreversible oxidation (metal based). The natture of the HOMO and LUMO in 2 has been examined by carrying out extended Hückel MO calculations on the model cluster Ru3(CO)7(H4-bpcd)(μ3-S)2, and the results are discussed relative to the observed electrochemistry." @default.
• W1966058654 created "2016-06-24" @default.
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• W1966058654 date "1996-01-01" @default.
• W1966058654 modified "2023-09-23" @default.
• W1966058654 title "Basal site substitution in the sulfido-bridged cluster Ru3(CO)9(μ3-S)2 by the redox-active diphosphine 4,5-bis(diphenylphosphino)-4-cyclopenten-1,3-dione (bpcd). Synthesis, X-ray structure and electrochemical properties of Ru3(CO)7(bpcd)(μ3-S)2" @default.
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• W1966058654 doi "https://doi.org/10.1016/0020-1693(95)04742-5" @default.
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