Syntheses of New {Tetrakis(1-pyrazolyl)borato}samarium(III) Complexes and Their Temperature-Dependent Exchange Motions of All Pyrazolyl Groups

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著者

    • ONISHI Masayoshi
    • Department of Applied Chemistry, Faculty of Engineering, Nagasaki University
    • YAMAGUCHI Hitoshi
    • Department of Applied Chemistry, Faculty of Engineering, Nagasaki University
    • HIRAKI Katsuma
    • Department of Applied Chemistry, Faculty of Engineering, Nagasaki University
    • NAGAOKA Junko
    • Department of Applied Chemistry, Faculty of Engineering, Nagasaki University
    • KAWANO Hiroyuki
    • Graduate School of Marine Science and Engineering, Nagasaki University

抄録

As the first unambiguous syntheses and characterization of the {tetrakis(1-pyrazolyl)borato}lanthanide(III) complexes, stable eight-coordinate (β-ketoenolato)samariums [Sm{η<SUP>3</SUP>-B(pz)<SUB>4</SUB>}<SUB>2</SUB>(β-ketoenolato)] (pz = 1-pyrazolyl group) were prepared, and novel stereochemically non-rigid temperature-dependent motions of the B(pz)<SUB>4</SUB> ligands were observed on their solution-state <SUP>1</SUP>H-NMR spectra, showing the spectroscopic equivalence of coordinated and uncoordinated pyrazolyl groups at high temperatures.

収録刊行物

  • Chemistry letters  

    Chemistry letters 1999(7), 573-574, 1999-07-05 

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10004701597
  • NII書誌ID(NCID)
    AA00603318
  • 本文言語コード
    ENG
  • 資料種別
    OTR
  • ISSN
    03667022
  • データ提供元
    CJP書誌  J-STAGE 
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