摘要:
The disilane (Ph2HSi)(2) reacted at room temperature with Co-2(CO)(8) to yield Co(SiPh3)(CO)(4) as a major product. Corresponding monosilyl derivatives were formed also when other disilanes Ph3SiSiR2H (R-2 = Ph-2, PhMe, Me-2, Et-2), Me3SiSiPh2H and PhMe2SiSiPhMeH were reacted with Co-2(CO)(8) under the same conditions. A mechanism based on silyl-silylene intermediates is proposed. The germylsilanes Ph3GeSiR2H (R = Ph, Et) with Co-2(CO)(8) also gave Co(SiPh3)(CO)(4) by selective elimination of:GePh2 which was trapped by Co-2(CO)(8) as Ph2Ge[Co(CO)(4)](2). Crystal structures of Co(SiPh3)(CO)(4) and Ph2Ge[Co(CO)(4)](2) are presented. (C) 1999 Elsevier Science S.A. All rights reserved.