Group 13 hydrides are

chemical compound A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...

s containing Group 13 element, group 13-hydrogen bonds (elements of group 13: boron, aluminium, gallium, indium, thallium).

Trihydrides

The simplest series has the chemical formula XH₃, with X representing any of the boron family. The great variety of boranes show a huge covalent cluster chemistry, but the heavier group 13 hydrides do not. Despite their formulae, however, they tend to form polymers. Alane(aluminum trihydride) is a strong reducing agent with octahedrally coordinated aluminium atoms. Gallane is even harder to synthesise and decomposes to gallium and hydrogen at room temperature. Indigane and thallane are too unstable to exist for any significant time when not coordinated. Simple MH₃ group 13 hydrides have a trigonal planar molecular geometry. This is due to the sp² hybridized center and vacant p-orbital, and contrasts with the trigonal pyramidal geometry of the pnictogen hydrides which are sp³ hybridized and contain a Non-bonding orbital, non-bonding lone pair of electrons. All group 13 hydrides have their hydrogen anions such as BH₄⁻ and AlH₄⁻.

Hexahydride

References

Hydrides {{chem-stub