摘要:
Silyl alkylidene complexes (Me(3)ECH(2))(2)Ta(=CHEMe(3))-(SiPh(2)Bu(t)) (E = C 1, Si 2) react with PMe(3) to form bis(alkylidene) complexes (Me(3)ECH(2))Ta(PMe(3))(2)-(=CHEMe(3))(2)(E = C 3, Si 4; 4 is structurally characterized) via preferential silane elimination, but 2 thermally decomposes to an alkyl alkylidyne compound (Me(3)SiCH(2))(4)Ta-2(mu-CSiMe(3))(2).