ヘテロキュミュレンのOSNSOにおける光誘発硫黄-窒素結合回転と熱窒素逆転
Zhuang Wu1, Ruijuan Feng1, Jian Xu1
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University , 215123 Suzhou, China.
Journal of the American Chemical Society
|January 9, 2018
まとめ
研究者たちは 異様な硫黄,窒素,酸素ヘテロキュムレン (OSNSO) 分子を合成しました この分子は特定の可視光波長や 低温にさらされると 構造の変化を起こし 独特の化学的性質を現します
科学分野:
- 無機化学
- 写真化学
- 物理化学
背景:
- ヘテロキュミュレンは,複数の累積二重結合を含む化合物である.
- 硫黄-窒素-酸素ヘテロサイクルは,潜在的な応用を持つユニークな化学構造のクラスです.
研究 の 目的:
- 新しい三元S,N,Oヘテロキュムレンの合成と特徴付け
- 光と温度によって誘発されるOSNSOの形状変化を調査する.
主な方法:
- CF3S ((O) NSOを700Kでフラッシュ真空で熱分解してOSNSOを生成する.
- 低温マトリックス (N2,Ne,Ar,Kr) のコンフォマーを30K未満で分離する.
- 可視光照射と可変温度分析を用いた光化学および熱学的研究.
主要な成果:
- OSNSOのシンシン (A) とシンアンチ (B) 構成の生成
- 照射 (570 ± 20 または 532 nm) により,AとBの高エネルギー反抗コンフォマー (C) への光異性化.
- SN結合回転 (400 ± 20 nm 光) または熱窒素逆転 (20-30 K) によるCからAおよびBへの可逆的形状変換.
結論:
- OSNSOは独特の光化学および熱反応性を持つ異なる構成イソマーを示しています.
- OSNSOにおける熱性窒素逆転のための例外的に低い活性化バリア (1.18 ± 0.07 kcal mol−1) を決定した.
- この研究は,エキゾチックなヘテロキュムレンの光化学と構成動力学に関する洞察を提供します.
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