A silanide is a chemical compound containing an anionic silicon(IV) centre, the parent ion being SiH−3.

The simplest trihydridosilanides can be produced from a triphenylsilanide in a reaction with hydrogen or PhSiH3 at standard conditions.

[3] Atomic metals can react directly with silane to yield unstable molecules with HMSiH3 formulae.

[8] In a range of compounds, the stretching force constant for the Si-H bond is 1.9 to 2.05 N cm–1, which is much softer than that of silane's 2.77 N cm–1.

If an alkali silande is rapidly heated to 500K another irreversible reaction occurs: Trihydridosilanides have been investigated as hydrogen storage materials.

[11] Under high hydrogen pressure, pentacoordinated and hexacoordinated silicon hydride ions are stabilised including SiH−5 and SiH2−6.