English  |  正體中文  |  简体中文  |  Items with full text/Total items : 17775/20116 (88%)
Visitors : 9509837      Online Users : 313
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/24398

    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)
    Appears in Collections:[嘉南學報] 13期 (1987)

    Files in This Item:

    There are no files associated with this item.

    All items in CNU IR are protected by copyright, with all rights reserved.

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