PREPARATION AND CHARACTERIZATION OF N(CH( 2)PPH(2))(3), N(CH(2)PPH(2))(3)MO(CO)(3) AND [HN(CH(2)PPH(2))(3)MO(CO)(3)]BF4

The synthesis of N(CH(2)PPh(2))(3) (1) and Its spectroscopic propertie s are reported. Reaction of N(CH(2)PPh(2))(3) with (CH3CN)(3)Mo(CO)3 l eads to N(CH(2)PPh(2))(3)Mo(CO)(3) (2). The cationic complex [HN(CH(2) PPh(2))(3)Mo(CO)(3)](+) (3) is obtained by protonating the N atom of 2 , with aqueous HBF,. The spectroscopic and structural properties of 2 and the cation 3 are compared. The results indicate an interaction of the ligand N atom and the Mo atom through space over more than 350 pm. It is shown from IR data that 2 is fixed on silicagel by hydrogen bon ding.