エクリプス・アンド・スタッガード-[Ge18Pd3{EiPr3}6]2- (E = Si, Sn):デルタエドール・ジンタル・クラスターにおける位置性同位体
Luis G Perla1, Alvaro Muñoz-Castro2,3, Slavi C Sevov1
1Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States.
Journal of the American Chemical Society
|October 5, 2017
まとめ
研究者は,新しいゲルマニウム-パラジウムクラスターアニオン[Ge18Pd3{Si iPr3}6]2を合成し,エクリプスされた幾何学を示した. この発見は,スタニル・リガド・アナログと異なるZintlクラスターにおける位置性イソメリズムを強調している.
科学分野:
- 無機化学
- 材料科学
- コンピュータ化学
背景:
- シンタルクラスターは 独特の電子と構造の性質を持つ 魅力的な無機化合物のクラスです
- 以前の研究では,スタニル結合のZintlクラスターに焦点を当て,シリル機能化された同類体の探索は限られていた.
- クラスター幾何学に対するリガンド効果を理解することは,新しい材料の設計に不可欠です.
研究 の 目的:
- 新しいシリル機能化されたゲルマニウムパラジウムジントルクラスターアニオンを合成し,特徴づけること.
- 既知のスタンニル結合類と比較して構造的差異と位置的異体性を調査する.
- リガンドの位置づけを制御する電子的およびステリック的要因を計算方法を用いて解明する.
主な方法:
- クラスターアニオン [Ge18Pd3{Si iPr3}6]2-の合成
- シングルクリスタルX線 difraktion,NMRスペクトル (1Hと13C) と電気スプレーイオン化質量スペクトロメトリ (ESI-MS) を用いた特徴付け.
- リガンドの位置づけを分析するための相対的密度関数理論 (DFT) の計算.
主要な成果:
- エクリプスされた[Ge18Pd3{Si iPr3}6]2-クラスターアニオンの合成と特徴づけに成功した (1).
- 以前報告された段階的な [Ge18Pd3{Sn iPr3}6]2- (2) との位置性イソメリスムの識別.
- DFT計算は,シリル対スタニル機能化されたクラスタの異なるリガンド配列に関する洞察を提供した.
結論:
- この研究は,リガンド改変によるZintlクラスターにおける位置性同位体の実現可能性を示しています.
- シリル機能化されたクラスターのエクリプスされた幾何学は,Zintlクラスター化学の新しい構造モチーフを提供します.
- 計算分析は,リガンドの位置づけの観察された違いをうまく説明し,クラスターアセンブリの理解を進める.
さらに関連する動画
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