Group 13 hydride
Group 13 hydrides are
group 13-hydrogen bonds (elements of group 13: boron, aluminium, gallium, indium, thallium, and nihonium).[1]
Trihydrides
The simplest series has the chemical formula XH3, with X representing any of the boron family.
Compound | Chemical formula | Geometry | Model |
---|---|---|---|
BH3
|
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AlH3
|
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GaH3
|
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InH3
|
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TlH3
|
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NhH3
|
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.[2]
Simple MH3 group 13 hydrides have a
trigonal pyramidal geometry of the pnictogen hydrides which are sp3 hybridized and contain a non-bonding
lone pair of electrons.
All group 13 hydrides have their
anions
such as BH4− and AlH4−.
Hexahydrides
This series has the chemical formula X2H6.
Compound | Chemical formula | Geometry | Model |
---|---|---|---|
B2H6
|
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Al2H6
|
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Ga2H6
|
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In2H6
|
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Tl2H6
|
|||
Nh2H6
|
References
- ISSN 1460-4744.
- ISBN 978-0-08-037941-8.