Issue 10, 1973

Carbon-13 nuclear magnetic resonance spectra of tungsten and molybdenum carbonyl derivatives

Abstract

13 C N.m.r. data are presented for the series of complexes (CO)6–nMLn(where M = Mo or W; L = alkylphosphine, alkyl phosphite, bisdiphenylphosphinoethane, bisdiphenylphosphinomethane, and n= 1 or 2) and for the corresponding free ligands. Chemical shifts and coupling constants for the co-ordinated carbon monoxide and ligand carbons are compared with results from other spectroscopic techniques. The chemical shift of co-ordinated carbon monoxide is found to reflect the charge donor ability of L. The phosphorus to carbon monoxide coupling constants vary in a similar way to phosphorus–phosphorus coupling constants in this class of compounds and a dependence of 1J M–13CO on s-electron density at the metal atom is suggested.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1973, 1027-1031

Carbon-13 nuclear magnetic resonance spectra of tungsten and molybdenum carbonyl derivatives

P. S. Braterman, D. W. Milne, E. W. Randall and E. Rosenberg, J. Chem. Soc., Dalton Trans., 1973, 1027 DOI: 10.1039/DT9730001027

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