From Wikipedia, the free encyclopedia
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.
Salts and covalent derivatives of the
iodide ion |
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|