Germanide halide

Germanide halides are compound that include the germanide (Ge⁴⁻) anion and a halide such as chloride (Cl⁻), bromide (Br⁻) or iodide (I⁻). They include germanide iodides, germanide bromides or germanide chlorides. They can be considered as mixed anion compounds. They are in the category of tetrelidehalides. Related compounds include the silicide iodides, and carbide iodides.

List

Chlorides

formula	system	space group	unit cell Å	volume	density	comment	ref
La3Cl2Ge3	monoclinic	C2/m	a=18.047 b=4.927 c=10.739 β=98.25 Z=4	824.2	5.685	air and water sensitive

Bromides

formula	system	space group	unit cell Å	volume	density	comment	ref
Br2Ge3La3	monoclinic	C2/m	a =18.622 b =4.3263 c =10.897 β =98° Z=4	869.4	6.069	air and water sensitive
Gd2GeBr2	trigonal	R3m	a = 4.1442, c = 29.487
Gd2GeBr2	trigonal	P3m1	a = 4.1668, c = 9.8173			semiconductor

Iodides

formula	system	space group	unit cell Å	volume	density	comment	ref
Y2GeI2	trigonal	R3m	a = 4.2135 c = 31.480 Z=3	484	5.19	bronze
GeI2La2	trigonal	P3m1	a=4.45 c=10.868 Z=1	186.46	3.381	air and water sensitive
GeI2La2	trigonal	R3m	a=4.465 c=32.591 Z=3	562.7	5.349	air and water sensitive
Ge2I2La2	trigonal	P3m1	a=4.272 c=11.8349 Z=1	187.11	6.006	air and water sensitive
GeI3La3	cubic	I4132	a=12.6036 Z=8	2002.1	5.773	air and water sensitive
Ge3I5La6	monooclinic	C2/m	a=19.338 b=4.423 c=14.895, β=128.16° Z=2	1001.7	5.589	air and water sensitive
GeI12La7	trigonal	R3	a=16.122 c =10.768 Z=3	2423.8	5.487	air and water sensitive
Gd2GeI2	trigonal	R3m	a = 4.2527 c = 31.657 Z=3	495.84	6.44	bronze