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Heating germanium dioxide with powdered germanium at 1000 °C forms germanium monoxide (GeO). [2]The hexagonal (d = 4.29 g/cm 3) form of germanium dioxide is more soluble than the rutile (d = 6.27 g/cm 3) form and dissolves to form germanic acid, H 4 GeO 4, or Ge(OH) 4. [6]
When comparing a polar and nonpolar molecule with similar molar masses, the polar molecule in general has a higher boiling point, because the dipole–dipole interaction between polar molecules results in stronger intermolecular attractions. One common form of polar interaction is the hydrogen bond, which is also
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]
It is soluble in non-polar solvents like carbon disulfide, chloroform or benzene, [2] but hydrolyses readily. [3] Mixed anion compound germanide iodides are also known.
Production of GeO 2, however, is dependent on the oxidized form of germanium extracted from the ore. Copper-lead-sulfide and zinc-sulfide ores will produce GeS 2, which is subsequently oxidized to GeO 2 with an oxidizer such as sodium chlorate. Zinc-ores are roasted and sintered and can produce the GeO 2 directly. The oxide is then processed as ...
The dioxide, GeO 2, can be obtained by roasting germanium disulfide (GeS 2), and is a white powder that is only slightly soluble in water but reacts with alkalis to form germanates. [36] The monoxide, germanous oxide, can be obtained by the high temperature reaction of GeO 2 with elemental Ge. [36]
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.
Germanium(IV) iodide reacts with tetraalkyl tin at 250 °C to form R 2 SnI 2 and R 2 GeI 2 (R= Et, Bu, Ph). [5] It reacts with germanium and sulfur at high temperatures to produce red GeSI 2 and orange Ge 2 S 3 I 2. [6]