Magnesium germanide

Crystal structure
__ Ge 4−      __ Mg 2+
Crystal system	cubic
Space group	Fm 3 m (No. 225)
Coordination numbers	Ge [8], Mg [4]
General
Surname	Magnesium germanide
other names	Dimagnesium germanide
Ratio formula	Mg 2 Ge
Brief description	dark gray solid
External identifiers / databases
CAS number 1310-52-7 PubChem 76518831 Wikidata Q18211708
properties
Molar mass	121.22 g mol −1
Physical state	firmly
density	3.09 g cm −3
Melting point	1115 ° C
solubility	soluble in water (0.0016g / 100mL at 250C).
safety instructions
GHS labeling of hazardous substances no GHS pictograms H and P phrases H: no H-phrases P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Magnesium germanide is an inorganic chemical compound between magnesium and germanium .

Extraction and presentation

Magnesium germanide can be obtained by reacting magnesium with germanium .

${\displaystyle {\ce {2 Mg + Ge -> Mg2Ge}}}$

properties

Magnesium germanide is a dark gray solid that is practically insoluble in water. The specific smell of Monogerman occurs under the influence of air humidity . It has a crystal structure of the anti- fluorite type.

use

Magnesium germanide is used as a primary and secondary intermediate and in chemical research. It forms germanium hydrides on contact with hydrochloric acid .

Individual evidence

1. ↑ ^{a b c d} Georg Brauer: Handbook of preparative inorganic chemistry . F. Enke, 1978, ISBN 3-432-87813-3 ( limited preview in Google book search).
2. ↑ ^{a b c d e f} data sheet Magnesium germanide, 99.99% (metals basis) from AlfaAesar, accessed on April 27, 2019 ( PDF )(JavaScript required) .
3. ↑ Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 2016, ISBN 978-1-4398-1462-8 , pp. 309 ( limited preview in Google Book search).
4. ↑ K. Turban, Herbert Schäfer: Notes: Representation and crystal structure of Ba ₂ Ge / Preparation and Crystal structure of Ba ₂ Ge . In: Journal of Nature Research B . April 1973, p. 220-222 , doi : 10.1515 / znb-1973-3-427 .