ディモリブデン酸化再酸化とクロモフォリックセンターを結ぶ多不飽和二酸化炭素酸塩テザー:吸収スペクトルと電子構造
F Albert Cotton1, James P Donahue, Carlos A Murillo
1Department of Chemistry, Laboratory for Molecular Structure and Bonding, P.O. Box 30012, Texas A&M University, College Station, Texas 77842-3012, USA. cotton@tamu.edu
Journal of the American Chemical Society
|May 2, 2003
まとめ
Mo(2) 化合物の色は,二カルボキシ酸リンクナーに依存する. 不飽和のリンクは,金属からリガンドへの電荷移転の移行により,濃い色と低エネルギー吸収を引き起こします.
科学分野:
- 無機化学 無機化学とは
- マテリアルサイエンス 材料科学
- スペクトロスコーピーは,スペクトロスコーピーを用います.
背景:
- 金属有機化合物は,さまざまな光学特性を有する.
- Mo(2) 核は,既知の染色体である.
- ディカルボキシラートリンクは,材料の性質を調整することができます.
研究 の 目的:
- ディカルボキシラートリンカーが[Mo(2)(DAniF)(3)](O(2)CXCO(2))[Mo(2)(DAniF)(3) ]化合物の吸収スペクトルに与える影響を調査する.
- リンク器の構造的変異を,観測された色変化と電子移行と相関させる.
- 観測された色に起因する電子刺激を計算的手法で解明する.
主な方法:
- 吸収スペクトロスコピーは,合成化合物のスペクトルを測定するために使用されました.
- 静的および時間依存の密度関数理論 (DFT) 計算を行いました.
- 電子トランジションの分析とその分子構造との関係.
主要な成果:
- 吸収スペクトルは,ジカルボキシラートリンクナーの化学性質に強い依存を示した.
- 不飽和ジカルボキシラートリンクは,より濃い色と低エネルギー吸収をもたらしました.
- 不飽和リンカーの場合,最も低いエネルギー吸収はMo(2)(4+) デルタ --> ディカルボキシラートpi金属からリガンドへの電荷移転の移行として特定されました.
- 飽和したリンカーは,非相互作用するMo (((2) (((4+) 染色体とのデルタ -->デルタトランジションにつながった.
結論:
- ディカルボキシラートリンクナーは,これらのMo(2) 化合物の色と電子特性を決定する上で重要な役割を果たします.
- リンク器の性質 (飽和または不飽和) は,観測された色に対応する電子移行の種類を決定する.
- DFTの計算により,観測されたスペクトル特徴の電子的起源が確認されました.
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