エポキシード/CO2共ポリメリゼーションのためのバイメタリックアニリドアルディミン亜鉛複合体
Bun Yeoul Lee1, Heon Yong Kwon, Su Yeon Lee
1Department of Molecular Science and Technology, Ajou University, Suwon 443-749 Korea. bunyeoul@ajou.ac.kr
Journal of the American Chemical Society
|March 3, 2005
まとめ
アサイクリックビス (((アニリド・アルディミン)) リガンドから派生した新しい二核亜鉛複合体は,サイクロヘキセン酸化物/CO (((2) コポリメリゼーションにおいて高い活性を示しています. 最も高い活動は複合体32で観察され,効率的なポリマー合成の有意な可能性を実証した.
科学分野:
- 有機金属化学 有機金属化学
- ポリメリゼーション触媒
- 協調化化学について
背景:
- アサイクロンO-フェニレンブリッジ bis ((アニリドアルディミン) 化合物および関連するマクロサイクロン構造が合成されました.
- これらのリンガンドは,新しい二核亜鉛複合体の前駆体として機能する.
研究 の 目的:
- 二核のミュ-メチルスルフィナート亜鉛複合体を合成し,特徴づけること.
- サイクロヘキセン酸化物/CO2共ポリメリゼーションにおけるこれらの複合体の触媒活性を評価する.
- 触媒性能に対するリガンド構造の影響を調査する.
主な方法:
- アサイクルビス (アニリドアルディミン) とマクロサイクル化合物の合成.
- 二核のミュ-メチルスルフィナート亜鉛複合体の形成は,Me(2) ZnとSO(2) との反応による.
- 稀な条件下でのサイクロヘキセン酸化物/CO2共ポリメリゼーションにおける触媒的評価.
- コンプレックス34と40のX線結晶学による構造的特徴化.
主要な成果:
- 二核型ミュ-メチルスルフィナト亜鉛複合体 (30-35) を定量的に採取した.
- コンプレックス30-35は,低亜鉛濃度 ([Zn]/[モノマー]=1:5600) でサイクロヘキセン酸化物/CO(2) コポリメリゼーションのための高触媒活性を示した.
- 複合体32が最も高い活性を示し,[Zn]/[モノマー] = 1:17,400でターンオーバー数2980と分子量284,000に達した.
- マクロサイクルの同類 (36-40) は軽微な活性を示した.
結論:
- アサイクリック・ビス (((アニリド・アルディミン) 派生二核亜鉛複合体は,CO (((2) /サイクロヘキセン酸化物の共ポリマー化のための非常に活性な触媒である.
- 触媒活動は,N-アリル整形置換剤に敏感であり,複合体32が最も有効である.
- これらの発見は,効率的かつ選択的なポリマー合成のための慎重に設計された二核亜鉛複合体の可能性を強調しています.
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