ドナー安定化アンチモニウム (I) とビスマス (I) イオン:炭素のより重価イソ電子類
Mujahuddin M Siddiqui1, Samir Kumar Sarkar1, Mohd Nazish1
1Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany.
Journal of the American Chemical Society
|January 12, 2021
まとめ
研究者は,より重いグループ15の元素を理解するために重要な最初の安定した2座標のアンチモニー (I) とビスムート (I) イオンを合成しました. これらの新しい化合物は,低酸化状態と重いpブロック元素の結合に関する洞察を提供します.
科学分野:
- 無機化学
- 有機金属化学
- メイングループ 化学
背景:
- グループ15の重元素 (アンチモニーやビスムートなど) の低価二座標化合物の分離は,二酸化物またはオリゴーマーを形成する傾向があるため困難である.
- 既存の研究は低酸化状態でのこれらの元素の安定化に挑戦しており,その独特の化学的性質の研究を制限しています.
研究 の 目的:
- ドナーで安定した2座標のアンチモニー (I) とビスムート (I) イオンの最初の合成と特徴を報告する.
- グループ15の8個の電位電子を持つアサイクリックカチオンの新しいクラスを導入する.
- カーベンのより重量のある電離対称性を探求する.
主な方法:
- カリウムグラフィート (KC8) を使用したアンチモニーとビスムートトリハリドの減少
- 周期性アルキル・アミノ・カルベン (cAAC) を用いた結果の金属イオンの安定化.
- NMRスペクトロスコーピー,サイクルボルトメトリー,単結晶X線 difraktion,および計算研究による特徴付け.
主要な成果:
- 二座標Sb (I) とBi (I) カチオンをトリフラート塩として分離した[cAAC) 2Sb][OTf]と[cAAC) 2Bi][OTf].
- 化合物1と2は,カルベンのより重い,バレンスのイソ電子類似体として作用する,アサイクリックグループ15カチオンの新しいクラスを表す.
- この新しい低価値種の構造と性質を 総合的な特徴づけで確認しました
結論:
- ドナーで安定した2座標Sb (I) とBi (I) のイオンの開発は,このような種を分離する以前の制限を克服します.
- これらの発見は,低価重量主群の元素の化学を調査するための新しい道を開きます.
- 特徴づけられた化合物は,化学のこの不足した領域における結合と反応性を理解するための重要なモデルとして機能する.
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