B(C_6F_5)_3 adducts of transition metal acyl compounds

摘要

The transition metal acyl compounds [Co(L)(CO)_3(COMe)] (L = PMe_3,PPhMe_2,P(4-Me-C_6H_4)_3,PPh_3 and P(4-F-C_6H_4)_3),[Mn(CO)_5(COMe)] and [Mo(PPh_3)(eta~5-C_5H_5)(CO)_2(COMe)] react with B(C_6F_5)_3 to form the adducts [Co(L)(CO)_3(C{OB(C_6F_5)_3}Me)] (L = PMe_31,PPhMe_2 2,P(4-Me-C_6H_4)_3 3,PPh_3 4,P(4-F-C_6H_4)_3 5),[Mn(CO)_5(C{OB(C_6F_5)_3}Me)] 6 and [Mo(eta~5-C_5H_5)(PPh_3)(CO)_2-(C{OB(C_6F_5)_3}Me)],7.Addition of B(C_6F_5)_3 to a cooled solution of [Mo(eta~5-C_5H_5)(CO)_3(Me)],under an atmosphere of CO gave [Mo(eta~5-C_5H_5)(CO)_3(C{OB(C_6F_5)_3}Me)] 8.In the presence of adventitious water,the compound [Co{HOB(C6F_5)_3}_2{OP(4-F-C_6H_4)_3}_2] 9,was formed from [Co(P(4-F-C_6H_4)_3)-(CO)_3(C{OB(C_6F_5)_3}Me)].The compounds 4 and 9 have been structurally characterised.The use of B(C_5F_5)_3 as a catalyst for the CO-induced migratory-insertion reaction in the transition metal alkyl compounds [Co(PPh_3)(CO)_3(Me)],[Mn(CO)_5(Me)],[Mo(eta~5-C_5H_5)(CO)_3(Me)] and [Fe(eta~5-C_5H_5)(CO)_2(Me)] has been investigated.