Abstract
The synthesis and characterization of the new ligand cis-1,5-bis[(diphenylphosphino) methyl]-3-oxabicyclo[3.3.0]octane (6) is reported. The complexes (6-P,P')M(CO) 4 (M=Cr, Mo, W), (6-P,P')PdCl 2 , and two diastereomers of fac-(6-P,P')Mn(CO) 3 Br have been prepared, in which 6 coordinates in a bidentate (P,P') fashion. A tridentate (P,P',O) coordination mode has been established for (6-P,P',O)M(CO) 3 (M=Mo, W) and [(6-P,P',O)Mn(CO) 3 ]BF 4 on the basis of 1 H, 13 C, 31 P, and IR spectroscopic data. Single-crystal X-ray diffraction studies of (6-P,P')Mo(CO) 4 and (6-P,P',O)W(CO) 3 verify the bidentate and tridentate coordination
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