摘要:
                                The cationic allene complex [Mo(eta(5)-C5H5)(CO)(3)(eta(2)-CH2=C=CHCPh(3))]BF4 1, was converted into the dihydronaphthyl complex [Mo(eta(5)-C5H5)(CO)(3)(C(10)H(7)Ph(2))] in the presence of KSCN as the major product. When the reaction was carried out at high concentration, the allylic complex [Mo(eta(5)-C5H5) (CO)(2){eta(3)-CH2C(COC(10)H(7)Ph(2))CHCPh(3)}] was isolated as a minor product. Reaction of allene with the dihydronaphthyl complex also induced insertion of CO followed by C-C coupling to give the allylic complex [Mo(eta(5)-C5H5)(CO)(2){eta(3)-CH2C(COC(10)H(7)Ph(2))CH2}]. In CH CI, migration of the organic moiety on Mo in the dihydronaphthyl to the C5H5 ligand occurred giving [MoCl{eta(5)-C5H4(C(10)H(7)Ph(2))}(CO)(3)]. In tetrahydrofuran and MeCN, similar reactions gave [MoH{eta(5)-C5H4(C(10)H(7)Ph(2))}(CO)(3)] and C5H5(C(10)H(7)Ph(2)) respectively. Under thermolytic conditions [Mo(eta(5)-C5H5)(CO)(2)(PPh(3))(C(O)C(10)H(7)Ph(2))] was also converted into [MoCl{eta(5)-C5H4(C(10)H(7)Ph(2))}(CO)(2)(PPh(3))]. The latter complex and [W(eta(5)-C5H5)(CO)(3)(C(10)H(7)Ph(2))] have been characterized by X-ray diffraction analysis.