A Very Short Be-Be Distance but No Bond: Synthesis and Bonding Analysis of Ng-Be₂O₂-Ng′ (Ng, Ng′=Ne, Ar, Kr, Xe)

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• 作者：Qingnan Zhang ; Wan-Lu Li ; Dr. Lili Zhao ; Mohua Chen ; Prof. Mingfei Zhou ; Prof. Jun Li and Prof. Gernot Frenking
• 刊名：Chemistry - A European Journal
• 出版年：2017
• 出版时间：February 10, 2017
• 年：2017
• 卷：23
• 期：9
• 页码：2035-2039
• 全文大小：999K
• ISSN：1521-3765

文摘

Short interatomic distances below standard values for a single bond are usually identified with double or triple bonds. The synthesis and spectroscopic characterization of a molecule is reported where the distance between two beryllium atoms is shorter than a standard double bond but there is no bond. The cyclic diberyllium dioxide Be₂O₂ molecule, which is coordinated by two noble gas atoms in Ng−Be₂O₂−Ng′ (Ng, Ng′=Ne, Ar, Kr, Xe) was isolated and spectroscopically identified in low-temperature matrices. The complexes possess very short Be−Be distances, but the analysis of the electronic structure reveals that there is no chemical bond.