クロロベンゼン から 形成 さ れ た 二重 及び 三重 充電 の 種 は,異常 な C-Cl 多重 結合 を 示し て い ます
Felipe Fantuzzi1, Benedikt Rudek2, Wania Wolff3
1Instituto de Química , Universidade Federal do Rio de Janeiro , Rio de Janeiro , RJ 21941-909 , Brazil.
Journal of the American Chemical Society
|March 13, 2018
まとめ
双重および三重電荷のクロロベンゼンイオンは,飛行時間質量スペクトロメトリを用いて観察された. 理論的な計算により,これらの高電荷の種で異常な炭素-塩素多重結合が判明しました.
科学分野:
- 物理化学
- コンピュータ化学
- スペクトロスコーピー
背景:
- 単発電荷のイオンは,アロマチックなフリーラジカルハロゲン化における典型的な中間物質である.
- 飛行時間質量スペクトロメトリ (TOF-MS) は,安定したイオン中間物質の観測に有効である.
研究 の 目的:
- 多重電荷のクロロベンゼンイオンの安定性を調べる
- クロロベンゼンの新しい二重および三重電荷の親イオンを特徴付ける.
- この異様なイオン種の結合特性を探るためだ
主な方法:
- 電子と陽子のビームを用いたクロロベンゼンイオン化.
- 飛行時間質量スペクトロメトリー (TOF-MS) を用いたイオン種の分析.
- 密度関数理論 (DFT),結合クラスター (CC),および一般化されたバレンスの結合 (GVB) を含む高レベルの理論的計算.
主要な成果:
- これまでに報告されていない,二重および三重電荷のクロロベンゼン親イオンの有意な出産の観察.
- 異常な炭素-塩素多重結合を特徴とする安定アイソマーの識別.
- 計算された構造には,末端のCCl二重結合とケテンのようなCCCl累積種が含まれています.
- ニトリルのようなCClトリプル結合の理論的証拠.
結論:
- 多重電荷のクロロベンゼンイオンが形成され,観察される.
- 異常な炭素-塩素多重結合は 高い電荷を持つこの種の重要な特徴です
- 理論化学は,新しいイオンの構造と安定性に関する重要な洞察を提供します.
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