P-C versus C-H bond cleavage in coordinated bis(dimethylphosphino)methane: controlled access to either phosphinite or functionalized diphosphine complexes.
2003
Treatment of fac-[Mn(CNPh)(CO)3(dmpm)]ClO4
(1) with KOH affords neutral phosphinite complex fac-[Mn(PMe2O)(CNPh)(CO)3(PMe3)]
(2) as a result of P–C bond cleavage on the dmpm ligand, whereas when carrying out the reaction in the presence of iodine the diphosphinoketenimine derivative fac-[MnI(CO)3{(PMe2)2CCNPh}]
(4) is obtained after deprotonation and further functionalization of the central carbon atom of the diphosphine.
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