Editing Gallium (section)

===Hydrides===
Like [[aluminium]], gallium also forms a [[hydride]], {{chem|GaH|3}}, known as ''[[gallane]]'', which may be produced by reacting lithium gallanate ({{chem|LiGaH|4}}) with [[gallium(III) chloride]] at −30&nbsp;°C:<ref name="wiberg_holleman" />{{rp|1031}}
:3 {{chem|LiGaH|4}} + {{chem|GaCl|3}} → 3 LiCl + 4 {{chem|GaH|3}}

In the presence of [[dimethyl ether]] as solvent, {{chem|GaH|3}} polymerizes to {{chem|(GaH|3|)|''n''}}. If no solvent is used, the dimer {{chem|Ga|2|H|6}} (''[[digallane]]'') is formed as a gas. Its structure is similar to [[diborane]], having two hydrogen atoms bridging the two gallium centers,<ref name="wiberg_holleman" />{{rp|1031}} unlike α-[[aluminium hydride|{{chem|AlH|3}}]] in which aluminium has a coordination number of 6.<ref name="wiberg_holleman" />{{rp|1008}}

Gallane is unstable above −10&nbsp;°C, decomposing to elemental gallium and [[hydrogen]].<ref name="sykes">{{cite book
|title= Advances in Inorganic Chemistry
|volume= 41
|author1= Downs, Anthony J.
|author2= Pulham, Colin R.
|editor= Sykes, A. G.
|publisher= Academic Press
|date= 1994
|isbn= 978-0-12-023641-1
|pages= 198–199
}}</ref>