In the previous post, I found intriguing the mechanism by which methane (CH ₄ ) inverts by transposing two of its hydrogens. Here I take a look at silane, SiH ₄ . It appears it is a three-stage process! Firstly, silane eliminates molecular hydrogen to form a molecular complex between H ₂ and SiH ₂ (DOI: 10.14469/hpc/2290). The barrier (~60 kcal/mol) is very much lower than with methane.