Rieskeクラスターのニトロシル化に関連したディニトロシル鉄複合体
Zachary J Tonzetich1, Loi H Do, Stephen J Lippard
1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Journal of the American Chemical Society
|May 23, 2009
まとめ
リスケクラスターモデルの酸化窒素との反応は,鉄硫黄の核を分解し,ディニトロシルロン複合体 (DNIC) を形成します. 新しい中性および還元DNICが合成され,稀な酸化還元パートナー例を提供しました.
科学分野:
- バイオ・オーガニック化学 バイオ・オーガニック化学
- 協調化化学について
- 酸化窒素の化学的性質について
背景:
- リスク・クラスターは,鉄硫黄のタンパク質である.
- 酸化窒素 (NO) は様々な生物学的役割を果たしています.
- ディニトロシルロン複合体 (DNIC) は,NOシグナル伝達に関与しています.
研究 の 目的:
- 合成Rieskeクラスターモデルの窒素酸化物との反応を調査する.
- 新型ディニトロシリロン複合体 (DNIC) の合成と特徴付け.
- 窒素豊富な環境におけるDNICのリドックス反応を調査する.
主な方法:
- 特定の鉄硫黄クラスターモデルの酸化窒素との反応.
- ディニトロシルロン複合体 (DNIC) の分離と特徴付けは,X線結晶学 (暗示) のような技術を用いて行われます.
- 新型β-ディケチミネート結合DNICの合成と電気化学的還元.
主要な成果:
- 酸化窒素は,鉄硫黄核の分解を誘導し,ディニトロシルロン複合体 (DNIC) を形成した.
- 新しいDNICである (Et) (4) N) (2) CHPh) Fe (NO) (2) が分離され,特徴づけられました.
- ベータ-ディケチミネートリガンドを含む中性 {Fe(NO) ((2))) ((9) DNICを合成し,その1電子還元により分離可能な {Fe(NO) ((2))) ((10) DNICが得られました.
結論:
- 合成のリースケのクラスターモデルは,NO反応における純粋にチオラートに結合したFe(2) S(2) クラスターと同質性を示しています.
- 構造的に類似したDNICリドックスパートナーが準備され,珍しい例です.
- これらの発見は,鉄と硫黄のクラスター反応性とディニトロシルロン複合体の化学的性質の理解を進める.
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