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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Ab Intio Molecular Orbital Study of the Reaction of GeH_2 with H_2O and Decomposition Reactions of H_3GeOH
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Ab Intio Molecular Orbital Study of the Reaction of GeH_2 with H_2O and Decomposition Reactions of H_3GeOH

机译:GeH_2与H_2O反应和H_3GeOH分解反应的从头算分子轨道研究

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摘要

The formation of H_3GeOH from GeH_2 and H_2O and its decomposition paths have been studied using the G2 molecular orbital method.It is predicted that GeH_2 reacts with H_2O exothermically (by 10.0 kcal mol~(-1) without a barrier to form a nonplanar complex,H_2GeOH_2,which isomerizes via a 1,2-H shift to H_3GeOH with a barrier of 28.3 kcal mol~(-1).The backward isomerization requires an activation energy of 61.1 kcal mol~(-1).In addition,direct decompositions of H_3GeOH yielding H_3GeOH + H,H_3Ge + OH,and H_2GeOH + H are shown to have alrge endothermicities of 113.7,102.4,and 84.9 kcal mol~(-1) ,and those producing H_2GeO + H_2 and HGeOH + H_2 to have activation energies of 82.1 and 57.6 kcal mol~(-1),respectively.Hence,H_3GeOH is sable to the above decomposition processes unless its temperature is moderately high or above.
机译:利用G2分子轨道方法研究了由GeH_2和H_2O形成H_3GeOH及其分解途径,预测GeH_2与H_2O放热反应(以10.0 kcal mol〜(-1)的势垒形成非平面络合物, H_2GeOH_2通过1,2-H转变为H_3GeOH,势垒为28.3 kcal mol〜(-1),向后异构化需要61.1 kcal mol〜(-1)的活化能。产生H_3GeOH + H,H_3Ge + OH和H_2GeOH + H的H_3GeOH被证明具有113.7、102.4和84.9 kcal mol〜(-1)的总吸热率,而产生H_2GeO + H_2和HGeOH + H_2的具有的活化能为H_3GeOH分别适用于82.1和57.6 kcal mol〜(-1)。因此,除非其温度适中或更高,否则H_3GeOH易于进行上述分解过程。

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