- 作者: 洪豐裕 ; 呂怡仁 ; 林助傑
- 作者服務機構: 中興大學化學系
- 中文摘要: Reaction of [ MoCo(CO)/sub 5/(PPh/sub 3/)/sub 2/(.eta./sup 5/-C/sub 5/H/sub 5/) ] with diphenylacetylene in tetrahydrofuran at 50.degree.C yielded two heterobimetallic compounds, [ MoCo(CO)/sub 4/(PPh/sub 3/).lbrace..mu.-PhC.ident.CPh.rbrace.(.eta./ sup 5/-C/sub 5/H/sub 5/) ](4) and [ MoCo(CO)/sub 5/.lbrace..mu.-PhC.ident.CPh.rbrace.(.eta./sup 5/-C/sub 5/H/sub 5/) ] . However, an unexpected product, Co(CO)/sub 2/(.mu.-CO)(.mu.:.eta./sup 2/,.eta./sup 4/-C/sub 4/Ph/sub 4/)Co(CO)/sub 2/(PPh/sub 3/) (6), was observed while attempting to grow the crystals for structural determination of 4. The X-ray crystal structure of 6 was determined: triclinic, P.1bar., a=11.654(2).ANG., b=12.864(2).ANG., c=13.854(2).ANG.,.alpha.=89.67(2).degree., .beta.=86. 00(2).degree.,.gamma.=83.33(2).degree., V=2057.9(6).ANG./sup 3/, Z=2. In 6, two cobalt fragments are at apical and basal positions of the pseudo-pentagonal pyramidal structure, respectively. The electron count for the apical cobalt fragments is 20, which is rather unusual. It is believed that 6 was formed after the fragmentation and recombination of the fragmented species of 4.
- 英文摘要: --
- 中文關鍵字: Cobalt Complex; X-Ray Crystal Structure
- 英文關鍵字: 鈷錯合物;X射線晶體結構