Solid InH3 is a three-dimensional network
polymeric 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 InH3 and InD3 produced on a solid hydrogen matrix are warmed.[5] Such a structure is known for solid
AlH3.[6] When heated above −90 °C, indium trihydride decomposes to produce indium–hydrogen alloy and elemental
hydrogen. As of 2013, the only known method of synthesising indium trihydride is the autopolymerisation of indane below −90 °C.
Other indium hydrides
Several compounds with In-H bonds have been reported.[7] Examples of complexes with two hydride ligands replaced by other ligands are (K+)3[K((CH3)2SiO)+7][InH(CH2C(CH3)3)−34[8] and HIn(−C6H4−
ortho-CH2N(CH3)2)2.
Although InH3 is labile, adducts are known with the stoichiometry InH3Ln (n = 1 or 2).[9]
1:1 amine adducts are made by the reaction of Li+[InH4− (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 (PCy3) have been characterised crystallographically. The average In-H bond length is 168 pm.[7] Indium hydride is also known to form adducts with
NHCs.[10]
References
^
ab"Indigane (CHEBI:30429)". Chemical Entities of Biological Interest (ChEBI). UK: European Bioinformatics Institute.
^Pullumbi, P.; Bouteiller, Y.; Manceron, L.; Mijoule, C. (July 1994). "Aluminium, gallium and indium trihydrides. An IR matrix isolation and ab initio study". Chemical Physics. 185 (1): 25–37.
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1994CP....185...25P.
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10.1016/0301-0104(94)00111-1.
^Aldridge, S.; Downs, A. J. (2001). "Hydrides of the Main-Group Metals: New Variations on an Old Theme". Chemical Reviews. 101 (11): 3305–65.
doi:
10.1021/cr960151d.
PMID11840988.
^Hunt, P.; Schwerdtfeger, P. (1996). "Are the Compounds InH3 and TlH3 Stable Gas Phase or Solid State Species?". Inorganic Chemistry. 35 (7): 2085–2088.
doi:
10.1021/ic950411u.
^
abAndrews, L.; Wang, X. (2004). "Infrared Spectra of Indium Hydrides in Solid Hydrogen and of Solid Indane". Angewandte Chemie International Edition. 43 (13): 1706–1709.
doi:
10.1002/anie.200353216.
PMID15038043.
^Turley, J. W.; Rinn, H. W. (1969). "The Crystal Structure of Aluminum Hydride". Inorganic Chemistry. 8 (1): 18–22.
doi:
10.1021/ic50071a005.
^Rowen Churchill, M.; Lake, C. H.; Chao, S.-H. L.; Beachley, O. T. (1993). "Silicone grease as a precursor to a pseudo crown ether ligand: crystal structure of [K+3[K(Me2SiO)7+][InH(CH2CMe3)3–4". Journal of the Chemical Society, Chemical Communications. 1993 (20): 1577–1578.
doi:
10.1039/C39930001577.
^Wang, X.; Andrews, L. (20 May 2004). "Infrared Spectra of Indium Hydrides in Solid Hydrogen and Neon". The Journal of Physical Chemistry A. 108 (20): 4440–4448.
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2004JPCA..108.4440W.
doi:
10.1021/jp037942l.
^Abernethy, C. D.; Cole, M. L.; Jones, C. (2000). "Preparation, Characterization, and Reactivity of the Stable Indium Trihydride Complex [InH3{
IMes}]". Organometallics. 19 (23): 4852–4857.
doi:
10.1021/om0004951.