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
- ,
- ,
- ,
- ,
- 巻
- 12
- 号
- 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