Synthesis and Characterization of Diphenyl-2-thienylphosphine Derivatives

Summary, in English

The reaction of [Co2{μ-C2(CO2Me)2}(CO)6] with the ligand diphenyl-2-thienylphosphine, PPh2(C4H3S), yields the complexes [Co2{μ-C2(CO2Me)2}(CO)5{PPh2(C4H3S)}] (1) and [Co2{μ-C2(CO2Me)2}(CO)4{PPh2(C4H3S)}2] (2). The related complex [Co3(μ3CMe)(CO)9] reacts with the same ligand to give [Co3(μ3-CMe)(CO)8{PPh2(C4H3S)}] (3) and [Co3(μ3-CMe)(CO)7{PPh2(C4H3S))2] (4). Thermolysis of 1 at 80°C leads to partial conversion of 1 into 2, which is isolated in low yield. Similarly, thermolysis of 3 at 70°C results in partial conversion of 3 to 4. Coordination of the thienyl unit of the diphenyl-2-thienylphosphine ligand to cobalt could not be detected in these thermolyses. Complexes 1–4 have been completely characterized and the crystal structure of complex 4 has been determined.

• Author: Jason D King; Magda Monari; Ebbe Nordlander
• Department/s: Department of Chemistry
• Publishing year: 1999
• Language: English
• Pages: 272-278
• Publication/Series: Journal of Organometallic Chemistry
• Volume: 573
• Issue: 1-2
• Links: http://dx.doi.org/10.1016/S0022-328X(98)00833-X
• Document type: Journal article
• Publisher: Elsevier
• Topic: Inorganic Chemistry
• Keywords: Cobalt; Carbonyl; Polyfunctional phosphine; Crystal structure
• Status: Published
• ISBN/ISSN/Other: ISSN: 0022-328X