Chiroptical Spectra of Tetrakis (+)‐3‐Heptafluorobutylrylcamphorate Ln(III) Complexes with an Encapsulated Alkali Metal Ion: Solution Structures as Revealed by Chiroptical Spectra
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- Dai Shirotani
- Institute for Higher Education Research and Practice Osaka University Toyonaka Osaka Japan
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- Kazuaki Yamanari
- Institute for Higher Education Research and Practice Osaka University Toyonaka Osaka Japan
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- Reiko Kuroda
- Department of Life Science, Graduate School of Arts and Sciences The University of Tokyo Meguro Tokyo Japan
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- Takunori Harada
- Department of Life Science, Graduate School of Arts and Sciences The University of Tokyo Meguro Tokyo Japan
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- Jamie L. Lunkley
- Department of Chemistry San Jose State University San Jose CA
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- Gilles Muller
- Department of Chemistry San Jose State University San Jose CA
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- Hisako Sato
- Department of Chemistry, Faculty of Science Ehime University Matsuyama Japan
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- Sumio Kaizaki
- Department of Chemistry, Graduate School of Science Osaka University Toyonaka Osaka Japan
書誌事項
- 公開日
- 2012-09-03
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/chir.22097
- 公開者
- Wiley
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説明
<jats:title>ABSTRACT</jats:title><jats:p>The preparation of tetrakis((+)‐hfbc) lanthanide(III) complexes with an encapsulated alkali metal and ammonium ions M[Ln((+)‐hfbc)<jats:sub>4</jats:sub>] (hereafter abbreviated as M‐Ln : (+)‐hfbc, (+)‐heptafluorobutyrylcamphorate; M, ammonium or benzyl ammonium ions as well as alkali metal ions) was reported and discussed. The electronic circular dichroism (CD) spectra in the intraligand π−π* transition of M–Ln were examined in view of the solvent effect. Here, the concentration, alkali metal, and ammonium ion dependences are compared with the solid CD, <jats:sup>5</jats:sup>D<jats:sub>0</jats:sub> ← <jats:sup>7</jats:sup>F<jats:sub>0</jats:sub>(Eu(III)) excitation spectra, circularly polarized luminescence, and vibrational circular dichroism. It has been revealed that the dodecahedral eight coordinate DD‐8‐M‐Ln complexes in crystals are equilibrated between the diastereoselectively formed square antiprism eight coordinate SAPR‐8‐M‐Ln and [Ln((+)‐hfbc)<jats:sub>3</jats:sub>] in EtOH and CH<jats:sub>3</jats:sub>CN solutions or between the SAPR‐8‐M‐Ln and DD‐<jats:italic>D</jats:italic><jats:sub>2d</jats:sub>(<jats:italic>mmmm</jats:italic>)‐8‐M‐Ln complexes in CHCl<jats:sub>3</jats:sub> solution. The observed CD couplets are found to reflect the exciton CD couplets which are useful to determine the four‐bladed SAPR‐(<jats:italic>llll</jats:italic>) absolute configuration around the lanthanide(III) ion. <jats:italic>Chirality 24:1055–1062, 2012</jats:italic>. © 2012 Wiley Periodicals, Inc.</jats:p>
収録刊行物
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- Chirality
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Chirality 24 (12), 1055-1062, 2012-09-03
Wiley