MU-CYCLOHEXYLPHOSPHIDO-BIS(TETRACARBONYLMANGANESE) AND YLMANGANESE)PHOSPHIDO-BIS-(TETRACARBONYLMANGANESE)

The central molecular fragment of the first title complex, [Mn2Br(C6H1 2P)(CO)(8)], is a four-membered non-planar Mn2BrP ring with a cyclohex yl ring and a H atom attached to the bridging P atom. In the related s econd title complex, [Mn3Br(PH)(CO)(13)], the cyclohexyl ligand is sub stituted by an Mn(CO)(5) group which displays an unusual ecliptic arra ngement with the axial carbonyl ligands of the ring Mn atoms.