摘要
硼烷是最典型也是迄今研究得最系统的非金属原子簇化合物.目前已知的硼烷有闭式、开式和网式三种典型的结构,其通式分别为B<sub>n</sub>H<sub>n</sub><sup>2-</sup>、B<sub>n</sub>H<sub>n+4</sub>、和B<sub>n</sub>H<sub>n+6</sub>,对这些硼烷的结构研究极大地丰富了原子簇化学。最近,我们在自制的装置上以脉冲激光束作用于NaBH<sub>4</sub>,产生了一类组成与结构均与已知硼烧不同的单电荷硼氢阴离子,记录了它们的飞行时间质谱。
By laser ablation of NaBH_4 on a home-made instrument, four series of borane anions B_nH_m^- with formular of n=3k+1, m=5k+4; n=3k+2, m=5k+1; n=3k+ 2, m=5k+5; n=3k+3, m=5k+6 (k=0,1,2…) were observed at first time onrecorded time-of-flight mass spectra with different ion intensities. From analysis ofthe mass spectra and calculate their possible topologies, a dragon-like structure wassuggested for these new type of borane anions.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1992年第4期438-440,共3页
Acta Physico-Chimica Sinica
基金
霍英东教育基金
关键词
硼烷
桥式硼氢键
激光等离子体
Borane
Bridged B-H bond
Laser plasma mass spectrometry
