Arsenidogermanates are chemical compounds that contain anions with arsenic bonded to germanium. They are in the category of tetrelarsenides, pnictidogermanates, or tetrelpnictides.
Germanium forms two arsenides: GeAs and GeAs2. [1]
name | formula | formula weight | crystal system | space group | unit cell | volume | density | comments | ref |
---|---|---|---|---|---|---|---|---|---|
LiGe3As3 | orthorhombic | Pbam | a=10.0862 b=15.7612 c=3.7403 Z=4 | 594.60 | 5.01 | [2] | |||
Li5GeAs3 | black | [3] | |||||||
NaGe6As6 | 908.05 | monoclinic | C2/m | a = 22.063, b = 3.8032, c = 7.2020, β = 92.744°, Z = 2 | 603.64 | 5.00 | needles | [4] | |
Na10Ge2As6 | monoclinic | P121/n1 | a=13.531 b=7.544 c=8.298 β = 90.2° Z=2 | 847.0 | [5] | ||||
K2GeAs2 | orthorhombic | Ibam | a = 13.292, b = 7.028, c = 6.548 Z = 4 | moisture sensitive needles | [6] | ||||
KGe3As3 | 481.53 | orthorhombic | Pnma | a=9.993, b=3.7664, c=18.607 Z=4 | 700.34 | 4.568 | [7] | ||
K2Ge3As3 | 520.73 | orthorhombic | Pnnm | a=14.1466 b=16.300 c=3.7489 Z=4 | 864.47 | 4.001 | fibrous metallic | [8] | |
K2NaGaAs2 | Ibam | a=6.733 b=14.809 c=6.574 Z=4 | 655.5 | 3.250 | [9] | ||||
KCdGeAs2 | triclinic | P1 | a = 8.004, b = 8.402, c = 8.703, α = 71.019°, β = 75.257°, γ = 73.746°, Z=4 | band gap 0.8 eV; Ge2As6 units | [10] | ||||
RbCdGeAs2 | triclinic | P1 | a = 8.269, b = 8.452, c = 8.735, α = 71.163°, β = 75.601°, γ = 73.673°, Z=4 | Ge2As6 units | [10] | ||||
Sr3Ge2As4 | red metallic; 1D As3GeGeAs3 units | [11] | |||||||
K5In5Ge5As14 | monoclinic | C2/m | a=40.00,b=3.925,c=10.299, β=99.97°, Z=8 | 1592 | 4.55 | air sensitive; layered | [12] | ||
K8In8Ge5As17 | monoclinic | P21/c | a=18.394,b=19.087,c=25.360, β=105.71°, Z=4 | 8571 | 4.45 | air sensitive; layered | [12] | ||
RbGe3As3 | 528 | orthorhombic | Pnma | a=10.166 b=3.7595 c=19.028 Z=4 | 727.2 | 4.823 | [7] | ||
Rb(Ge1.5In0.5)As2(As1.5Ge0.5) | orthorhombic | Cmc21 | a = 3.799, b = 16.50, c = 12.24, Z = 4 | 767 | 4.589 | [13] | |||
RbXGe2−XInXAs4 | [13] | ||||||||
I8As21Ge25 | 4403 | cubic | Pm3n | a=10.5963 Z=1 | 1189.8 | 6.1431 | colourless | [14] | |
Cs5GeAs3 | metallic; unstable in air; GeAs3 units | [15] | |||||||
BaGe2As2 | tetragonal | P42mc | a=7,786 c=8.664 Z=4 | 525.2 | 5.47 | metallic | [16] | ||
Ba4GeAs4 | dark metallic; GeAs4 units | [17] | |||||||
Re3Ge0.6As6.4 | [18] | ||||||||
Re3GeAs6 | 1080.75 | cubic | Im3m | a = 8.73202 Z=4 | 665.75 | 10.78 | n-type semiconductor | [18] | |
AuGeAs | monoclinic | Cc | a 7.2729, b 6.2953, c 6.3067, β 119.209° | [19] | |||||
KXGe2−XTlXAs4 | [13] |
The phosphidosilicates or phosphosilicides are inorganic compounds containing silicon bonded to phosphorus and one or more other kinds of elements. In the phosphosilicates each silicon atom is surrounded by four phosphorus atoms in a tetrahedron. The triphosphosilicates have a SiP3 unit, that can be a planar triangle like carbonate CO3. The phosphorus atoms can be shared to form different patterns e.g. [Si2P6]10− which forms pairs, and [Si3P7]3− which contains two-dimensional double layer sheets. [SiP4]8− with isolated tetrahedra, and [SiP2]2− with a three dimensional network with shared tetrahedron corners. SiP clusters can be joined, not only by sharing a P atom, but also by way of a P-P bond. This does not happen with nitridosilicates or plain silicates.
Hans Georg von Schnering was a German chemist and professor of inorganic chemistry at the University of Münster, honorary professor at the University of Stuttgart and director at the Max Planck Institute for Solid State Research.
Brigitte Eisenmann was a German chemist and a professor at the Technische Universität Darmstadt. She was the first woman professor for Chemistry at the Technische Universität Darmstadt. Together with Herbert Schäfer, she extended the definition of Zintl phases.
The telluride iodides are chemical compounds that contain both telluride ions (Te2−) and iodide ions (I−). They are in the class of mixed anion compounds or chalcogenide halides.
The nitridogermanates are chemical compounds containing germanium atoms bound to nitrogen. The simplest anion is GeN48−, but these are often condensed, with the elimination of nitrogen.
A Phosphide chloride is a mixed anion compound containing both phosphide (P3−) and chloride (Cl−) ions.
Rubidium ozonide is an oxygen rich compound of rubidium. It is an ozonide, meaning it contains the ozonide anion (O3−).
Arsenidosilicates are chemical compounds that contain anions with arsenic bonded to silicon. They are in the category of tetrelarsenides, pnictidosilicates, or tetrelpnictides. They can be classed as Zintl phases or intermetallics. They are analogous to the nitridosilicates, phosphidosilicates, arsenidogermanates, and arsenidostannates. They are distinct from arsenate silicates which have oxygen connected with arsenic and silicon, or arsenatosilicates with arsenate groups sharing oxygen with silicate.
Arsenidostanates are chemical compounds that contain anions with arsenic bonded to tin. They are in the category of tetrelarsenides, pnictidostancates, or tetrelpnictides.
Selenidogermanates are compounds with anions with selenium bound to germanium. They are analogous with germanates, thiogermanates, and telluridogermanates.
Sulfidogermanates or thiogermanates are chemical compounds containing anions with sulfur atoms bound to germanium. They are in the class of chalcogenidotetrelates. Related compounds include thiosilicates, thiostannates, selenidogermanates, telluridogermanates and selenidostannates.
Phosphide iodides or iodide phosphides are compounds containing anions composed of iodide (I−) and phosphide (P3−). They can be considered as mixed anion compounds. They are in the category of pnictidehalides. Related compounds include the phosphide chlorides, arsenide iodides antimonide iodides and phosphide bromides.
Phosphide bromides or bromide phosphides are compounds containing anions composed of bromide (Br−) and phosphide (P3−) anions. Usually phosphorus is covalently connected into more complex structures. They can be considered as mixed anion compounds. They are in the category of pnictidehalides. Related compounds include the phosphide chlorides, phosphide iodides, nitride bromides, arsenide bromides, and antimonide bromides.
Arsenide bromides or bromide arsenides are compounds containing anions composed of bromide (Br−) and arsenide (As3−). They can be considered as mixed anion compounds. They are in the category of pnictidehalides. Related compounds include the arsenide chlorides, arsenide iodides, phosphide bromides, and antimonide bromides.
Arsenide iodides or iodide arsenides are compounds containing anions composed of iodide (I−) and arsenide (As3−). They can be considered as mixed anion compounds. They are in the category of pnictidehalides. Related compounds include the arsenide chlorides, arsenide bromides, phosphide iodides, and antimonide iodides.
An iodide nitride is a mixed anion compound containing both iodide (I−) and nitride ions (N3−). Another name is metalloiodonitrides. They are a subclass of halide nitrides or pnictide halides. Some different kinds include ionic alkali or alkaline earth salts, small clusters where metal atoms surround a nitrogen atom, layered group 4 element 2-dimensional structures, and transition metal nitrido complexes counter-balanced with iodide ions. There is also a family with rare earth elements and nitrogen and sulfur in a cluster.
Carbide chlorides are mixed anion compounds containing chloride anions and anions consisting entirely of carbon. In these compounds there is no bond between chlorine and carbon. But there is a bond between a metal and carbon. Many of these compounds are cluster compounds, in which metal atoms encase a carbon core, with chlorine atoms surrounding the cluster. The chlorine may be shared between clusters to form polymers or layers. Most carbide chloride compounds contain rare earth elements. Some are known from group 4 elements. The hexatungsten carbon cluster can be oxidised and reduced, and so have different numbers of chlorine atoms included.
Carbide bromides are mixed anion compounds containing bromide and carbide anions. Many carbide bromides are cluster compounds, containing on, two or more carbon atoms in a core, surrounded by a layer of metal atoms, encased in a shell of bromide ions. These ions may be shared between clusters to form chains, double chains or layers.
Tellurogermanates or telluridogermanates are compounds with anions with tellurium bound to germanium. They are analogous with germanates, thiogermanates and selenidogermanates.
Phosphidogermanates are chemical compounds that have phosphorus bound to germanium to yield anions. They are in the category of phosphidotetrelates and also pnictides. They are analogous to nitridogermanates, phosphidoaluminates, phosphidogallates, phosphidoindates, phosphidosilicates or phosphidostannates.