2026-05-01 中国科学院（CAS）
＜関連情報＞
- https://english.cas.cn/newsroom/research-news/202605/t20260509_1158664.shtml
- https://pubs.acs.org/doi/10.1021/jacs.6c04122
ガラス状態の主要構造単位を含む中性酸化ホウ素クラスターのスペクトル特性 Spectral Signatures of Neutral Boron Oxide Clusters Containing Key Structural Units of the Vitreous State
Shangdong Li,Shuai Jiang,Jianxing Zhuang,Ailin Wang,Wenhui Yan,Jiayue Yang,Weiqing Zhang,Hongwei Li,Hua Xie,Gang Li,Lai-Sheng Wang,Ling Jiang,and Xueming Yang
Journal of the American Chemical Society Published: April 28, 2026
DOI:https://doi.org/10.1021/jacs.6c04122
Abstract
Spectroscopic characterization of neutral boron oxide clusters is insightful for understanding the structures and properties of the bulk but has proven to be extremely challenging due to the difficulty in size selection. Here, we report a size-specific infrared spectroscopy study of a series of neutral boron oxide clusters using near-threshold photoionization with a tunable vacuum ultraviolet free electron laser. Quantum chemical calculations were carried out to understand the structures and bonding of the clusters and to help assign the experimental spectral features. The BO3, B2O4, and B3O6 clusters focused in this study are found to have planar structures with BO, BO3, and B2O5 groups, which are key structural units in the two-dimensional network of the vitreous state. Chemical bonding analyses revealed structural stability arising from the synergy among the terminal B≡O groups and B–O σ bonds. This work provides spectral signatures for the key structural units of the bulk and paves the way for systematic studies on the stepwise formation and growth mechanisms of boron oxide materials.
