Formation and Characterization of the Indium Hydride Molecules H<sub>2</sub>InCl and HInCl<sub>2</sub>: Matrix Isolation and Quantum Chemical Studies
作者:Hans-Jörg Himmel、Anthony J. Downs、Tim M. Greene
DOI:10.1021/ja9932333
日期:2000.2.1
Indium monochloride, InCl, adds HCl or H2 when isolated together with these molecules in an argon matrix at 12 K and photoactivated by broad-band UV−visible radiation. On the basis of the infrared spectra of the matrices (including the effects of 1H/2H and 35Cl/37Cl isotopic change) and of density functional theory (DFT) calculations, the products of the reactions were identified as the discrete indium
On the reactivity of subvalent compounds of the Group 13 elements: exploration of the mechanism for the reactions of MCl (M = Ga or In) with dihydrogen to give H2MClDedicated to Professor D. Fenske on the occasion of his 60th birthday.
作者:Hans-Jörg Himmel
DOI:10.1039/b202080g
日期:2002.6.27
Motivated by recent experimental results on the reactivity of the diatomic Group 13 subhalogenides GaCl and InCl in solid Ar matrices, the mechanisms for spontaneous and photoactivated reactions of these species are studied herein by means of quantum chemical methods as applied to their reactions with H2. The experimental results show that reaction with H2 in a solid Ar matrix does not occur spontaneously, but requires photoactivation, the trivalent derivatives H2MCl (M = Ga or In) being the detectable products. Furthermore, these results indicate that the photoactivated reactions proceed in a concerted fashion. Quantum chemical calculations are employed to explain the observed reactivities and provide quantitative estimates for the barriers to reaction. Calculations were performed for several electronic states and multiplicities of the GaCl/H2 and InCl/H2 systems likely to be of relevance and enable a detailed
overall analysis of the reaction mechanisms to be made. The reactions of Group 13 subhalogenides with other molecules are anticipated to follow the same pattern and, thus, the results reported herein should be of relevance to the reactivity of Group 13 subhalogenides in general.
受最近关于 13 族二原子亚卤化物 GaCl 和 InCl 在固体 Ar 基质中反应性的实验结果的启发,本文通过量子化学方法研究了这些物质与 H2 反应的自发和光激活反应机制。实验结果表明,在固体 Ar 基质中与 H2 的反应不是自发发生的,而是需要光激活,三价衍生物 H2MCl(M = Ga 或 In)是可检测到的产物。此外,这些结果表明,光激活反应以协调的方式进行。量子化学计算被用来解释观察到的反应活性,并提供反应障碍的定量估计。计算针对的是 GaCl/H2 和 InCl/H2 系统中可能相关的几种电子状态和倍率,从而能够对反应机制进行详细的总体分析。预计第 13 族次卤化物与其他分子的反应也会遵循相同的模式,因此本文报告的结果应与第 13 族次卤化物的一般反应性相关。