The complex cis-[Mo(CO) (PPh Cl) ] (I) readily reacts with a variety of nucleophiles, HX where X NH , NHMe, NH-p-C H Me, OCH , O-p- H Me, and SEt, in the presence of a nitrogen base to yield new cis-[Mo(CO) (PPh X) ] complexes. The reaction of cis-[Mo(CO) (PPh NH ) (II) first with n-BuLi and then with dichlorosilanes yields unique heterocyclic complexes. The reaction of I with H O and Et N yields [Et NH] cis-[Mo(CO) (PPh O) H] (VIII) which is postulated to contain a symmetrically-bound hydrogen. The hydrogen may be replaced by a BF group by treatment with BF · OEt and with a Na by treatment with NaOH and Et NCl. Reaction of VIII with dichlorosilanes yields complexes containing unique heterocyclic rings analogous to those obtained from II. H NMR and infrared spectral properties of the new complexes are given. © 1978. 4 2 2 2 6 4 3 6 4 4 2 2 4 2 2 2 2 3 3 4 2 2 2 3 2 4 + - + 1
