Mapped on the image of t
he reactive differential cross section, t
he
hit
herto elusive disilavinylidene molecule (H
2SiSi) is found to be initially formed in t
he gas-p
hase reaction of ground-state atomic silicon (Si) wit
h silane (SiH
4) and in equilibrium wit
h t
he mono-bridged (Si(H)SiH) and di-bridged (Si(H
2)Si) isomers. As s
hown by R. I. Kaiser, A. H. H. C
hang, J. F. Stanton et al. in t
heir Communication on
href="https://doi.org/10.1002/anie.201611107" rel="references:https://doi.org/10.1002/anie.201611107">page 1264 ff., t
he dynamics are distinct from t
hose of t
he isovalent carbon/met
hane system, and provide a rare glimpse of unusual silicon c
hemistry.