Preparative and NMR studies of 1,3-dienecobalt(I) complexes |
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| Authors: | M Bressan R Ettorre P Rigo |
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| Institution: | Centro di Studio sulla Stabilità e Reattività dei Composti di Coordinazione, C.N.R., Istituto di Chimica Analitica University of Padova Italy |
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| Abstract: | The synthesis and the characterization of cobalt(I) complexes of the type Co(diene)(phosphine)3]Y (diene = 1,3-butadiene and isoprene; phosphine = PMe3, PMe2Ph, and HPPh2; Y = ClO4, BF4, or BPh4) are reported. The fluxional nature of the five-coordinate cations Co(diene)(phosphine)3]+ is shown by variable-temperature NMR spectroscopy (1H and 31P). Low-temperature spectra are consistent with a square-pyramidal structure in which the diene occupies two basal coordination sites. |
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