Reactions of Laser-Ablated Boron Atoms with Methyl Halides in Excess Argon. Infrared Spectra and Density Functional Theory Calculations on CH<sub>3</sub>BX, CH<sub>2</sub>BX, and CHBX (X = F,Cl,Br)
作者:Dominick V. Lanzisera、Lester Andrews
DOI:10.1021/jp0017689
日期:2000.10.1
Laser-ablated boron atoms react with methyl fluoride in an argon stream to form two major products: CH2BF and CHBF. In similar reactions of boron with methyl chloride and methyl bromide, both CH2BX and CHBX are also observed, as well as the primary insertion products, CH3BCl and CH3BBr, respectively. Infrared spectra of isotopic combinations of B and CH3X and density functional theory frequency calculations
激光烧蚀的硼原子与氩气流中的甲基氟反应形成两种主要产物:CH2BF 和 CHBF。在硼与氯甲烷和溴甲烷的类似反应中,还观察到了 CH2BX 和 CHBX,以及主要插入产物 CH3BCl 和 CH3BBr。B和CH3X同位素组合的红外光谱和密度泛函理论频率计算为产品鉴定提供了依据。这两种产物都是通过插入到 C-X 键中形成的,然后在所有反应中失去一个或两个 H 原子。比较了 B 与 C2H6、CH3NH2 和 CH3OH 的反应产物,所有这些产物都与 CH3F 是等电子的。计算不仅非常好地预测了振动频率,而且还预测在 CH2BX 或 CHBX 中没有配位键,