在量子化学对SiH与HCl反应计算的基础上 ,运用统计热力学和Wigner校正的Eyring过渡态理论计算了该反应在 73 .1 5～ 1 873 .1 5K温度范围内的热力学函数、平衡常数、频率因子A和速率常数随温度的变化 .计算结果表明该反应在低温下具有热力学优势 ,而在高温下具有动力学优势 .该反应在研究的温度范围内是一放热、熵减少的反应 ,反应的速率常数随温度的升高而增大 ,而且服从Arrhenius定律 . Based on the calculation of the reaction between SiH and HCl by quantum chemistry, the thermodynamic functions, equilibrium constants, and frequency of the reaction in the temperature range of 73.1 5 ~ 1873.1K are calculated by using the statistical thermodynamics and the Wigner-corrected Eyring transition state theory Factor A and rate constant with temperature.The results show that the reaction has the thermodynamic advantage at low temperature and the kinetic advantage at high temperature.The reaction is an exothermic and entropic reduction reaction in the studied temperature range.The reaction The rate constant increases with increasing temperature, and obeys Arrhenius’ law.