ハロゲンおよびハロゲンサロゲン経由でニオニオンのピンサービスカルベン (Ni) 複合体 (IV) にアクセス
Gabriel Espinosa Martinez1, Cristian Ocampo1, Yun Ji Park1
1School of Chemical Sciences, University of Illinois at Urbana-Champaign , 600 South Mathews Avenue, Urbana, Illinois 61801, United States.
Journal of the American Chemical Society
|March 26, 2016
まとめ
研究者はニッケル複合体の2電子酸化を達成し,希少なニッケル (IV) 種を形成した. この突破は,これらの異常な酸化状態にアクセスするための新しい経路を提供し,ニッケル (II) とニッケル (IV) の間の可逆サイクルを示しています.
科学分野:
- 有機金属化学
- 無機化学
- ニッケル触媒
背景:
- ニッケルは通常,Ni ((II)) のような安定した酸化状態を示す.
- ニッケル複合体の高酸化状態に到達することは困難です.
- ニッケル・レドックス化学の理解は,触媒応用において極めて重要です.
研究 の 目的:
- 新しいニッケル (IV) 複合体の合成を記述する.
- 高価ニッケルへのアクセスのための新しい反応経路を探求する.
- ビソプロピルフェニル-ベンジミダゾル-2-イリデン) フェニルニッケル複合体の酸化還元反応を調査する.
主な方法:
- ブロミン (Br2) とベンジルトリメチルアモニウムトリブロミドを用いたNi (II) 複合体の2電子酸化.
- 標的複合体の合成: ((DIPP) CCC) NiXと ((DIPP) CCC) NiX3で,XはClまたはBrである
- 一連のスペクトロスコーピテクニックを用いた特徴付け.
主要な成果:
- ニッケル ((IV) コンプレックス, ((DIPP) CCC) NiX3の合成に成功した.
- Ni (IV) 種に対する前例のない反応経路の実証
- これらの希少なニッケル複合体の形成が確認されています.
結論:
- この研究は,ニッケル (IV) コンプレックスへの新しい経路を確立している.
- 合成されたNi(IV) コンプレックスはNi(II) に容易に還元できる.
- この作業により,Ni (II) /Ni (IV) の酸化状態の間の可逆循環が可能になり,酸化還元媒介プロセスへの道が開きます.
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