水素結合の"ダイマー・オブ・ダイマー"における混合バレンシー
Luke A Wilkinson1, Laura McNeill, Anthony J H M Meijer
1Department of Chemistry, University of Sheffield, Sheffield, S3 7HF, UK.
Journal of the American Chemical Society
|January 23, 2013
まとめ
ラクタム群を持つダイモリブデン化合物は,独特の水素結合構造を形成する. 電気化学の研究は,これらのジモリブデン複合体の陽子結合混合バレンスを明らかにし,新しい電子特性を強調しています.
科学分野:
- 有機金属化学 有機金属化学
- 固体化学 固体化学
- 電気化学 電気化学について
背景:
- 四重結合のジモリブデン複合体は,独自の電子構造で知られている.
- ラクタム機能群は,水素結合のような分子間相互作用に参加することができます.
- 協調化合物の自己組み立ては,新しい超分子構造につながる可能性があります.
研究 の 目的:
- ペンダントラクタム群を特徴とするディモリブデン四重結合化合物の自己組み立て行動を調査する.
- 結果となる超分子構造における電気化学的性質と電子通信を調査する.
- 酸化時に形成される混合バレンスの種の性質を特徴付けるために.
主な方法:
- 乳糖機能を持つディモリブデン四重結合化合物の合成.
- 固体構造の決定のためのX線結晶学.
- 溶液中の電気化学技術 (サイクル電圧計)
- 電子トランジションを検知するためのスペクトロ電気化学分析 (UV-Vis-NIR).
主要な成果:
- 固体状態と溶液の両方で自己補完的な水素結合によって"ダイマーのダイマー"の形成.
- 連続した2つの1電子リドックスプロセスの観察は,Mo (((2) (((4+)) コアに関連しています.
- 一電子酸化種における間隔電荷伝送帯の欠如は,局所電子状態を示す.
結論:
- ディモリブデン四重結合化合物とラクタン群は,自己組み立て能力が顕著である.
- "ダイマーのダイマー"の構造は,ジモリブデンウムコアの電子特性に影響します.
- 酸化された混合バレンスの種は,電子結合ではなく,陽子結合混合バレンスの種として最もよく説明されます.
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