The structure and dynamic behaviour of disubstituted derivatives of [Rh6(CO)16] containing bidentate phosphorus ligands

The solution structure and dynamic behaviour of [Rh6(CO)14(μ,η2-dppm)] (1), [Rh6(CO)14(μ,η2-dppe)] (2) and [Rh6(CO)14(μ,η2-dppef)] (3) containing bridging diphosphine ligands have been examined using 1D 13C, 31P and 2D 13C–{103Rh}, 31P–{103Rh} HMQC and 13C EXSY NMR techniques. It has been shown that the solid state structure of these clusters remains unchanged in solution, including the close non-bonding intramolecular interactions of the …