English  |  正體中文  |  简体中文  |  Items with full text/Total items : 78852/78852 (100%)
Visitors : 36526256      Online Users : 471
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.lib.ncu.edu.tw/handle/987654321/27055

    Title: Synthesis and characterization of phosphorus complexes of meso-tetraphenylporphyrin (tpp), and X-ray crystal structure of [P(tpp)(OCH(CH3)(2))(2)](+)Cl-
    Authors: Cheng,PC;Liu,IC;Hong,TN;Chen,JH;Wang,SS;Wang,SL;Lin,JC
    Contributors: 機械工程研究所
    Keywords: N/A
    Date: 1996
    Issue Date: 2010-06-29 18:06:35 (UTC+8)
    Publisher: 中央大學
    Abstract: Three cationic phosphorus(V) porphyrin complexes of the type [P(ttp)(L)(2)](+) [tpp = meso-tetraphenylphorphyrin; the axial ligand L = OCH(CH3)(2), O(CH2)(4)OH, O-p-C6H4OH] have been prepared. Al compounds were characterized by H-1 and C-13 NMR and mass spectrometry. The structure of the new compound di(2-propanolato) (meso-tetraphenylporphyrinato)phosphorus (V) chloride, [P(tpp) (OCH(CH3)(2))(2)](+) Cl-, was determined by a single-crystal X-ray structure analysis. The cation of [P(tpp)(OCH (CH3)(2))(2)](+) Cl- displays an octahedral coordination about the phosphorus atom and exhibits a ruffled porphyrin geometry with a core size of 1.866 Angstrom. The displacement of the phosphorus atom from the porphyrin mean plane is 0.016 Angstrom. The geometry around the phosphorus centre of the [P(tpp)(OCH(CH3)(2))(2)](+) Cl- molecule has P(1)-O(1) = 1.650(3) Angstrom, P(1)-O(2) = 1.622(3) Angstrom and P-Np = 1.866(P) Angstrom. NMR spectroscopy provides a convenient method for investigating the ring current effect (Delta delta) between di(1,4-butanediolato) (meso-tetraphenylporphyrinato) phosphorus(V) chloride, [P(tpp) (OCH2 CH2CH2CH2OH)(2)](+) Cl-, with fluxional 1,4-butanediolate ligands, and di(1,4-hydroxybenzeneato) (meso-tetraphenylporphyrinato) phosphorus(V) chloride, [P(tpp)(O-p-C6H4 OH)(2)](+) Cl-, with rigid 1,4-hydroxybenzeneate ligands. It also differentiates the ring current effect for the diolate ligands of [P(tpp) (O(CH2)(n)OH)(2)](+) Cl- with different chain lengths by increasing n from 2 to 4. Copyright (C) 1996 Elsevier Science Ltd
    Relation: POLYHEDRON
    Appears in Collections:[機械工程研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat

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

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明