論文

査読有り
2006年7月

Peculiarities of C-60(center dot-) coordination to Cobalt(III) octaethylporphyrin in ionic multicomponent complexes: Observation of the reversible formation of Co-C(C-60(-)) coordination bonds

CHEMISTRY-A EUROPEAN JOURNAL
  • Dmitri V. Konarev
  • ,
  • Salavat S. Khasanov
  • ,
  • Akihiro Otsuka
  • ,
  • Gunzi Saito
  • ,
  • Rimma N. Lyubovskaya

12
20
開始ページ
5225
終了ページ
5230
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/chem.200600132
出版者・発行元
WILEY-V C H VERLAG GMBH

Ionic multicomponent complexes containing the C-60(-) anion, cobalt(II) octaethylporphyrin (OEP), and the noncoordinating tetramethylphosphonium cation (TMP+) [(TMP+){(CoOEP)-O-II(C-60(-))}(C6H5CN)(x)-(C6H4Cl2)(1-x)] (x congruent to 0.75) (1), or the coordinating cation of N-methyldiazabicyclooctane (MDABCO(+)), [{(MDABCO(+))(CoOEP)-O-II(C-60(-))}-(C6H5CN)(x)(C6H4Cl2)(1-x)] (x congruent to 0.67) (2), were obtained. Diamagnetic sigma-bonded {(CoOEP)-O-II(C-60(-))} units in 1 have the Co center dot center dot center dot C(C-60(-)) distance of 2.268(1) angstrom at 100 K and are stable up to 290 K. Both MDABCO(+) and C-60(-) coordinate to (CoOEP)-O-II in 2. In this case. a noticeably longer Co center dot center dot center dot C(C-60(-)) distance of 2.508(4) angstrom was observed at 100 K. As a result. the unprecedented reversible formation of the Co-C(C-60(-)) coordination sigma bond is realized in 2 and is accompanied by a transition from a paramagnetic to a diamagnetic state in the 50-250 K range. It was shown. for the first time, that the Co center dot center dot center dot C distance of about 2.51 angstrom is a boundary distance below which the Co-C(C-60(-)) coordination bond is formed.

リンク情報
DOI
https://doi.org/10.1002/chem.200600132
J-GLOBAL
https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200902229978571041
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/16671049
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000239105500007&DestApp=WOS_CPL
ID情報
  • DOI : 10.1002/chem.200600132
  • ISSN : 0947-6539
  • J-Global ID : 200902229978571041
  • PubMed ID : 16671049
  • Web of Science ID : WOS:000239105500007

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