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Titanium hydride normally refers to the inorganic compound TiH 2 and related nonstoichiometric materials. [1] [2] It is commercially available as a stable grey/black powder, which is used as an additive in the production of Alnico sintered magnets, in the sintering of powdered metals, the production of metal foam, the production of powdered titanium metal and in pyrotechnics.
Magnesium hydride is the chemical compound with the molecular formula MgH 2. It contains 7.66% by weight of hydrogen and has been studied as a potential hydrogen storage medium. It contains 7.66% by weight of hydrogen and has been studied as a potential hydrogen storage medium.
In this method, a hydride powder is mixed with the sealing metal; heating the mixture results in decomposition of the hydride. The evolving hydrogen cleans up the surrounding area, and the produced metal flows and forms a seal even at temperatures as low as 300 °C. [18]
Molecular weight (M.W.) (for molecular compounds) and formula weight (F.W.) (for non-molecular compounds), are older terms for what is now more correctly called the relative molar mass (M r). [8] This is a dimensionless quantity (i.e., a pure number, without units) equal to the molar mass divided by the molar mass constant .
The first well defined metal hydrido complex was H 2 Fe(CO) 4, obtained by the low temperature protonation of an iron carbonyl anion. The next reported hydride complex was (C 5 H 5) 2 ReH. The latter complex was characterized by NMR spectroscopy, which demonstrated the utility of this technique in the study of metal hydride complexes. [20]
Lithium hydride is an inorganic compound with the formula Li H. This alkali metal hydride is a colorless solid, although commercial samples are grey. Characteristic of a salt-like (ionic) hydride , it has a high melting point, and it is not soluble but reactive with all protic organic solvents .
Zirconium(II) hydride is a molecular chemical compound with the chemical formula Zr H 2. It is a grey crystalline solid or dark gray to black powder. [ 4 ] [ 5 ] It has been prepared by laser ablation and isolated at low temperature.
In general, complex metal hydrides have the formula M x M' y H n, where M is an alkali metal cation or cation complex and M' is a metal or metalloid.Well known examples feature group 13 elements, especially boron and aluminium including sodium aluminium hydride, NaAlH 4), lithium aluminium hydride, LiAlH 4, and lithium borohydride, (LiBH 4).