Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/24398
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 17775/20116 (88%)
造访人次 : 10244127      在线人数 : 509
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    標題: Photochemical reaction of dirhenium decacarbonyl with triphenylphosphine
    作者: S.W.LEE
    貢獻者: Department of Chemistry,National Tsing Hua University
    日期: 1987
    上傳時間: 2011-10-24 14:19:41 (UTC+8)
    摘要: The CO substitution reaction of Re2(CO)l0 by triphenylphosphine was investigated photochemically under vacuum. In contrast to the previous studies, three sterically crowded, triply substituted dirhenium complexes, i.e. 1-axial-2',4'-diequa-torial-Re2 (CO)7 (PPh3)3 1-axial-2,2'-diequatorial-Re2 (CO)7 (PPh3 )3 and 2,2'4'-tri-equatorial-Re2(CO)7(PPh3)3 were isolated and characterized. A fourth compound,which was tentatively assigned as Re2(CO)6(PPh3)4, was also isolated. Contrary to the Mn system, the [Re(CO)n(PPh3)5-n] radical, which is believed to be the intermediate of the photochemical substitution reaction, could not be detected by EPR spectroscopy. The subtle differences in substitution chemistry between rhenium carbonyl and manganese carbonyl complexes are the manifestation of the delicate balance of metal-metal bond strength and the steric repulsion introduced by the bulky phosphorus-containing ligands.
    關聯: 嘉南學報 13:A59-A67 轉載 Journal of organometallic chemistry 248 : p.189-197 (1983)
    显示于类别:[嘉南學報] 13期 (1987)



    在CNU IR中所有的数据项都受到原著作权保护.


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈