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Alfa Aesar was formed from a series of company mergers: Alfa Inorganics was founded in 1962 by Alfred Bader, in a 50:50 venture between Aldrich Chemicals and Metal Hydrides Inc. [6] [7] The purpose was to provide a source of inorganic research chemicals to sit alongside the organic chemicals of Bader's other company: Aldrich Chemicals.
Two oxides of germanium are known: germanium dioxide (GeO 2, germania) and germanium monoxide, (GeO). [4] The dioxide, GeO 2 can be obtained by roasting germanium disulfide (GeS 2) or by allowing elemental germanium to slowly oxidze in air, [5] and is a white powder that is only slightly soluble in water but reacts with alkalis to form germanates. [4]
Germanium is created by stellar nucleosynthesis, mostly by the s-process in asymptotic giant branch stars. The s-process is a slow neutron capture of lighter elements inside pulsating red giant stars. [57] Germanium has been detected in some of the most distant stars [58] and in the atmosphere of Jupiter. [59]
Germanium monoselenide is a chemical compound with the formula GeSe. It exists as black crystalline powder having orthorhombic (distorted NaCl -type) crystal symmetry; at temperatures ~650 °C, it transforms into the cubic NaCl structure. [ 3 ]
Germane is the chemical compound with the formula Ge H 4, and the germanium analogue of methane. It is the simplest germanium hydride and one of the most useful compounds of germanium. Like the related compounds silane and methane, germane is tetrahedral. It burns in air to produce GeO 2 and water. Germane is a group 14 hydride.
Ge(II) dicationic complexes refer to coordination compounds of germanium with a +2 formal oxidation state, and a +2 charge on the overall complex.In some of these coordination complexes, the coordination is strongly ionic, localizing a +2 charge on Ge, while in others the bonding is more covalent, delocalizing the cationic charge away from Ge.
Lithium aluminium germanium phosphate, typically known with the acronyms LAGP or LAGPO, is an inorganic ceramic solid material whose general formula is Li 1+x Al x Ge 2-x (PO 4) 3. [3] LAGP belongs to the NASICON (Sodium Super Ionic Conductors) family of solid conductors [3] and has been applied as a solid electrolyte in all-solid-state lithium ...
Propagermanium , also known by a variety of other names including bis(2-carboxyethylgermanium) sesquioxide and 2-carboxyethylgermasesquioxane, is an organometallic compound of germanium [2] that is sold as an alternative medicine. It is a polymeric compound with the formula ((HOOCCH 2 CH 2 Ge) 2 O 3) n.
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