Indium trihydride is an

inorganic An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds⁠that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemistry''. Inor ...

compound with the

chemical formula A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as pare ...

(). It has been observed in matrix isolation and

laser ablation Laser ablation or photoablation (also called laser blasting) is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser ...

experiments. Gas phase stability has been predicted. The

infrared spectrum Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves. The infrared spectral band begins with the waves that are just longer than those of ...

was obtained in the gas phase by

of indium in presence of hydrogen gas is of no practical importance.

Chemical properties

Solid is a three-dimensional network

polymer A polymer () is a chemical substance, substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeat unit, repeating subunits derived from one or more species of monomers. Due to their br ...

ic structure, where In atoms are connected by In-H-In bridging bonds, is suggested to account for the growth of broad infrared bands when samples of and produced on a solid hydrogen matrix are warmed. Such a structure is known for solid . When heated above , indium trihydride decomposes to produce indium–hydrogen alloy and elemental

hydrogen Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter ...

. As of 2013, the only known method of synthesising indium trihydride is the autopolymerisation of indane below −90 °C.

Other indium hydrides

left, 188px, Structure of the adduct of and ">tricyclohexylphosphine. Several compounds with In-H bonds have been reported. Examples of complexes with two hydride ligands replaced by other ligands are and . Although is labile, adducts are known with the stoichiometry (''n'' = 1 or 2). 1:1 amine adducts are made by the reaction of (lithium tetrahydridoindate(III)) with a trialkylammonium salt. The trimethylamine complex is only stable below −30 °C or in dilute solution. The 1:1 and 1:2 complexes with tricyclohexylphosphine () have been characterised crystallographically. The average In-H bond length is 168 pm. Indium hydride is also known to form adducts with NHCs.

References

{{Hydrides by group Indium compounds Metal hydrides