クラウンエーテルおよび関連するリガンドを用いた低値主群元素の安定化に関する実験的および計算的洞察
Charles L B Macdonald1, Rajoshree Bandyopadhyay, Benjamin F T Cooper
1Department of Chemistry and Biochemistry, University of Windsor, Windsor, Ontario N9B 3P4, Canada. cmacd@uwindsor.ca
Journal of the American Chemical Society
|February 3, 2012
まとめ
ポリエーテルリガンドを含むチンII) 塩を研究した. クロリド塩は,電子およびステリック効果のために,トリフラート塩と比較して,より大きなチーン-塩素結合とより高い反応性を表します.
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
- コンピューティング・ケミストリー
背景:
- 亜鉛化合物は,合成と触媒で多用途である.
- ポリエーテルリガンドは,ケレーションを通じて金属イオンを安定させることができます.
- チンの性質に対するリガンド効果を理解することは,チューニング反応性にとって極めて重要です.
研究 の 目的:
- 構造的,電子的,および反応性の違いを調査するために,チン (tin) トリフラートとポリエーテルリガンドで複合された塩化塩.
- ポリエーテル・リガンド構造とカウンテリオン (トリフラート対塩化物) がチンの性質に与える影響を明らかにする.
- 実験的観測と計算による予測を相関させる.
主な方法:
- 構造的特徴化のための単結晶X線 difraktion. 構造的特徴化のための単結晶X線 difraktion.
- モッズバウアー光譜法と固体核磁共振 (NMR) 光譜法で,電子的および構造的分析を行う.
- 電気化学的性質と反応性を評価するためのサイクル電圧測定法.
- 密度関数理論 (DFT) とモラープレセット扰乱理論 (MP2) は,理論的な洞察のための計算である.
主要な成果:
- モッズバウアー光譜は,トリフラート塩のバレンスの電子により高いs文字を示した.
- 固体NMRでは,トリフラート塩と塩化塩の有意な違いが明らかになった.
- サイクルボルトメトリーは,ポリエーテルリガンドがトリフラート塩に及ぼすステリックおよび電子的影響を実証した.
- 計算により,亜鉛の安定性と反応性に対するリガンドと置換物の影響に関する洞察が得られた.
結論:
- チン-塩素結合は,チン-トリフラート結合よりも実質的です.
- 亜塩化塩の反応性の上昇は,より強い亜塩化塩と亜塩化塩の相互作用に起因する.
- ポリエーテル・リガンド構造は,シネム (tin) センターの周りの電子およびステリック環境に大きな影響を及ぼします.
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