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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	^[1]

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	^[2]
Gd₂GeBr₂	trigonal	R3m	a = 4.1442, c = 29.487				^[3]
Gd₂GeBr₂	trigonal	P3m1	a = 4.1668, c = 9.8173			semiconductor	^[3]

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	^[3]
GeI₂La₂	trigonal	P3m1	a=4.45 c=10.868 Z=1	186.46	3.381	air and water sensitive	^[2]
GeI₂La₂	trigonal	R3m	a=4.465 c=32.591 Z=3	562.7	5.349	air and water sensitive	^[2]
Ge₂I₂La₂	trigonal	P3m1	a=4.272 c=11.8349 Z=1	187.11	6.006	air and water sensitive	^[2]
GeI₃La₃	cubic	I4₁32	a=12.6036 Z=8	2002.1	5.773	air and water sensitive	^[2]
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	^[2]
GeI₁₂La₇	trigonal	R3	a=16.122 c =10.768 Z=3	2423.8	5.487	air and water sensitive	^[2]
Gd₂GeI₂	trigonal	R3m	a = 4.2527 c = 31.657 Z=3	495.84	6.44	bronze	^[3]

References

^ Mattausch, Hansjürgen; Zheng, Chong; Ryazanov, Mikhail; Simon, Arndt (February 2005). "Reduced Lanthanum Halides with Ge as Interstitials: La2I2Ge, La2I2Ge2, La3Cl2Ge3, La3Br2Ge3, La3I3Ge, La6I5Ge3 and La7+xI12Ge". Zeitschrift für anorganische und allgemeine Chemie (in German). 631 (2–3): 302–308. doi:10.1002/zaac.200400269. ISSN 0044-2313.
^ ^a ^b ^c ^d ^e ^f ^g Mattausch, Hansjürgen; Zheng, Chong; Ryazanov, Mikhail; Simon, Arndt (February 2005). "Reduced Lanthanum Halides with Ge as Interstitials: La2I2Ge, La2I2Ge2, La3Cl2Ge3, La3Br2Ge3, La3I3Ge, La6I5Ge3 and La7+xI12Ge". Zeitschrift für anorganische und allgemeine Chemie (in German). 631 (2–3): 302–308. doi:10.1002/zaac.200400269. ISSN 0044-2313.
^ ^a ^b ^c ^d Lukachuk, Mar'yana; Kremer, Reinhard K.; Mattausch, Hansjürgen; Simon, Arndt (2007-04-01). "New Layered Germanide Halides RE 2 GeX 2 (RE = Y, Gd; X = Br, I)". Inorganic Chemistry. 46 (8): 3231–3235. doi:10.1021/ic062425d. ISSN 0020-1669. PMID 17373789.

[1] Mattausch, Hansjürgen; Zheng, Chong; Ryazanov, Mikhail; Simon, Arndt (February 2005). "Reduced Lanthanum Halides with Ge as Interstitials: La2I2Ge, La2I2Ge2, La3Cl2Ge3, La3Br2Ge3, La3I3Ge, La6I5Ge3 and La7+xI12Ge". Zeitschrift für anorganische und allgemeine Chemie (in German). 631 (2–3): 302–308. doi:10.1002/zaac.200400269. ISSN 0044-2313.

[:0-2] ^ ^a ^b ^c ^d ^e ^f ^g Mattausch, Hansjürgen; Zheng, Chong; Ryazanov, Mikhail; Simon, Arndt (February 2005). "Reduced Lanthanum Halides with Ge as Interstitials: La2I2Ge, La2I2Ge2, La3Cl2Ge3, La3Br2Ge3, La3I3Ge, La6I5Ge3 and La7+xI12Ge". Zeitschrift für anorganische und allgemeine Chemie (in German). 631 (2–3): 302–308. doi:10.1002/zaac.200400269. ISSN 0044-2313.

[:1-3] Lukachuk, Mar'yana; Kremer, Reinhard K.; Mattausch, Hansjürgen; Simon, Arndt (2007-04-01). "New Layered Germanide Halides RE 2 GeX 2 (RE = Y, Gd; X = Br, I)". Inorganic Chemistry. 46 (8): 3231–3235. doi:10.1021/ic062425d. ISSN 0020-1669. PMID 17373789.

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