The reaction of the unsaturated anion [Re3(μ-H)4(CO)10- with LiMe at low temperature gives the unsaturated acyl derivative [Re3(μ-H)4(CO)9{C(Me)O}]2-, which is slowly converted, as the temperature is raised, into a saturated species in which a hydride ligand has migrated from the cluster to the acylic carbon atom to give [Re3(μ-H)3(CO)9{μ3-γ2-C(H)(Me)O}]2-. Variable temperature 1H-NMR spectroscopy has shown the existence of an unexpected equilibrium between the two anions.
Beringhelli, T., Dalfonso, G., Freni, M., Ciani, G., Moret, M., Sironi, A. (1991). Transformation of a coordinated carbon monoxide into an oxyethyl bridging group in a hydrido-carbonyl rhenium cluster. Synthesis and crystal structure of the anion [Re3(μ-H)3(CO)9{μ3-η2-C(H)(Me)O}]2-. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 412(1-2), C4-C5 [10.1016/0022-328X(91)86065-X].
Transformation of a coordinated carbon monoxide into an oxyethyl bridging group in a hydrido-carbonyl rhenium cluster. Synthesis and crystal structure of the anion [Re3(μ-H)3(CO)9{μ3-η2-C(H)(Me)O}]2-
MORET, MASSIMO;
1991
Abstract
The reaction of the unsaturated anion [Re3(μ-H)4(CO)10- with LiMe at low temperature gives the unsaturated acyl derivative [Re3(μ-H)4(CO)9{C(Me)O}]2-, which is slowly converted, as the temperature is raised, into a saturated species in which a hydride ligand has migrated from the cluster to the acylic carbon atom to give [Re3(μ-H)3(CO)9{μ3-γ2-C(H)(Me)O}]2-. Variable temperature 1H-NMR spectroscopy has shown the existence of an unexpected equilibrium between the two anions.
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