The reaction of [Mo(CO)3I2(NCCH3)2] with a stoichiometric amount of Me3SiN=PPh2CH2PPh2 gives an octahedral complex, [Mo3I(CO)(η2-N=PPh2CH2PPh2)] by the metathetical elimination of Me3SiI. Interestingly, similar reaction of the analogous tungsten complex gives a seven-coordinated complex, [WI2(CO)3(η2-Me3SiN=PPh2CH2PPh2)] which ultimately hydrolyses to give an amide complex, [W(CO)3I2(η2-HN=PPh2CH2PPh2)]. The complexes have been characterised by microanalysis, IR and NMR (1H and 31P) spectroscopic data.
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