translate English to French: DFT B3LYP/6-311++G(3df,2pd) and ab initio QCISD(T)/6-311G++(3df,2pd)//QCISD/6-311G(d,p) calculations have been carried out on the potential energy surfaces of reactions ZH2 + H2 ZH4 (Z= Ge, Si).
On a effectué des calculs DFT B3LYP/6-311++G(3df,2pd) et des calculs ab initio QCISD(T)/6-311G ++(3df,2pd)//QCISD/6-311G(d,p) sur les surfaces d'énergie potentielle des réactions ZH2 + H2 ZH4 (Z = Ge, Si).