新しいレニウム-チンのクラスターは,Re-Sn結合の間のパラジウムフォスフィン群を追加します
Richard D Adams1, Burjor Captain, Mikael Johansson
1Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA. adams@mail.chem.sc.edu
Journal of the American Chemical Society
|January 13, 2005
まとめ
新しいレニウム・チンの複合体が合成され,特徴づけられました. この複合体とそのパラジウム添加物は,分子軌道計算によって説明されるユニークな金属対金属結合を示しています.
科学分野:
- 有機金属化学 有機金属化学
- 協調化化学について
- マテリアルサイエンス 材料科学
背景:
- レーニウム・チンの複合体は,そのユニークな電子的および構造的性質のために興味を惹きます.
- 多核複合体における金属対金属結合の理解は,新しい材料の開発において極めて重要です.
研究 の 目的:
- 新しいレニウム・チンの複合体を合成し,特徴づけること.
- レーニウム-チンの複合体に対するパラジウム調整の構造的および電子的効果を調査する.
- 金属同士の結合を計算手法で解明する.
主な方法:
- Ph3SnHとの反応によるレニウム-チンの複合体 (Re2(CO) 8 (((mu-SnPh2) 2) の合成.
- ビスパラジウムアダクト (Pd2Re2(CO) 8 ((mu-SnPh2) 2 ((PBut3) 2) の形成である.
- X線結晶学とフェンスキー・ホール分子軌道計算.
主要な成果:
- レーニウム-チンの複合体は,長いRe-Re単一結合と橋渡しSnPh2群を特徴としています.
- パラジウムアダクトは,親複合体と比較して,有意に延長されたRe-ReおよびRe-Sn結合を示しています.
- 分子軌道計算は,両方の複合体内の結合相互作用の洞察を提供します.
結論:
- この研究では,新しいレニウム-チンの複合体と混合金属のパラジウム-レニウム複合体を成功裏に合成し,特徴づけました.
- パラジウムの協調は金属対金属結合長に影響し,電子再分布を示している.
- Fenske-Hallの計算は,これらの異常な構造における金属と金属の結合の性質を確認しています.
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