Phosphidogermanate

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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.

They are under investigation as infrared non-linear optic materials [1] and solid-state electrolytes. [2]

List

formulaMWcrystal

system

space

group

unit cell Åvolumedensityformpropertiesreferences
GePmonoclinicC2/ma = 15.1948 b = 3.6337 c = 9.1941 β = 101.239° [3]
Li2GeP2148.458tetragonalI41/acda = 12.3069 c = 19.0306 Z=322882.422.736Ge4P10 supratetrahedrared [4]
LiGe3P3317.751orthorhombicPbama = 9.8459 b = 15.7489 c = 3.5995 Z=4558.153.780GeP4 and Ge(P3Ge) tetrahedra in

5 and 6-membered rings making 2D slabs

black [4]
Li8GeP4252Pa3a=11.80203 c=11.80203 Z=81643.882.037 [5] [6]
Li8GeP4251.99cubicP43na=11.77294 Z=81635.982.046 [5] [6]
Li14GeP6cubicFm3ma=5.95667 Z=41.860brown [2] [7]
Li10.1Ge5PPnmaa=10.360 b=4.3072 c=24.267 Z=41082.82.86Ge5 ringsblack; actually is a germanide phosphide [8]
NaGe3P3orthorhombicPmc21a=3.6276 b=8.407 c=10.332 Z=2315.093.517Ge3P7 ringred; band gap 2.06 eV; semiconductor [9]
Na2Ge3P3356.72monoclinicC2/ma = 17.639 b = 3.6176 c = 11.354 β = 92.74° Z=4723.73.274black [10]
Na3Ge2P3307.06monoclinicP21/ca = 7.2894 b = 14.7725 c = 7.0528 β = 106.331° Z=4728.82.798Ge2P6 with shared Pblack [11]
Na5Ge7P5monoclinicC2/ma = 16.168 b = 3.6776 c = 12.924 β = 91.30° Z=2768.23.343black [10]
Na8GeP4380.4cubicFd3ma=13.4230 Z=82418.532.08943same as Na8SnSb4black; decomposes over 350°C to Na10Ge2P6;band gap 1.9 eV [5]
Na10Ge2P6monoclinicP21/na=13.176 b =7.36.4 c=8.042 β=90.26° Z=2780.292.38beige; moisture sensitive [12]
CuGe2P3 [13]
ZnGeP2I42da=5.466 c=10.722melt 1027°C [1] [14] [15] [16]
Ag6Ge10P121744.76cubicI43ma=10.3111 Z=21096.35.286air stable; silver grey; thermoelectric [17] [18] [19]
CdGeP2I42da=5.740 c=10.773 [20]
Cs5GeP3orthorhombicPnmaa=14.31 b=5.994 c=15.618 Z=4metallic [21]
BaGe2P2344.46tetragonalP42mca =7.6153 c =8.490 Z=4492.34.647light metallic grey; melt 861 °C [22]

Related Research Articles

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The inorganic imide is an inorganic chemical compound containing

Nitride fluorides containing nitride and fluoride ions with the formula NF4-. They can be electronically equivalent to a pair of oxide ions O24-. Nitride fluorides were discovered in 1996 by Lavalle et al. They heated diammonium technetium hexafluoride to 300 °C to yield TcNF. Another preparation is to heat a fluoride compound with a nitride compound in a solid state reaction. The fluorimido ion is F-N2- and is found in a rhenium compound.

A selenite fluoride is a chemical compound or salt that contains fluoride and selenite anions. These are mixed anion compounds. Some have third anions, including nitrate, molybdate, oxalate, selenate, silicate and tellurate.

The nitridosilicates are chemical compounds that have anions with nitrogen bound to silicon. Counter cations that balance the electric charge are mostly electropositive metals from the alkali metals, alkaline earths or rare earth elements. Silicon and nitrogen have similar electronegativities, so the bond between them is covalent. Nitrogen atoms are arranged around a silicon atom in a tetrahedral arrangement.

Selenogallates are chemical compounds which contain anionic units of selenium connected to gallium. They can be considered as gallates where selenium substitutes for oxygen. Similar compounds include the thiogallates and selenostannates. They are in the category of chalcogenotrielates or more broadly chalcogenometallates.

Sulfidostannates, or thiostannates are chemical compounds containing anions composed of tin linked with sulfur. They can be considered as stannates with sulfur substituting for oxygen. Related compounds include the thiosilicates, and thiogermanates, and by varying the chalcogen: selenostannates, and tellurostannates. Oxothiostannates have oxygen in addition to sulfur. Thiostannates can be classed as chalcogenidometalates, thiometallates, chalcogenidotetrelates, thiotetrelates, and chalcogenidostannates. Tin is almost always in the +4 oxidation state in thiostannates, although a couple of mixed sulfides in the +2 state are known,

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Arsenidogermanates are chemical compounds that contain anions with arsenic bonded to germanium. They are in the category of tetrelarsenides, pnictidogermanates, or tetrelpnictides.

Arsenidostanates are chemical compounds that contain anions with arsenic bonded to tin. They are in the category of tetrelarsenides, pnictidostancates, or tetrelpnictides.

<span class="mw-page-title-main">Lanthanum phosphide</span> Chemical compound

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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.

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.

Selenidostannates are chemical compounds which contain anionic units of selenium connected to tin. They can be considered as stannates where selenium substitutes for oxygen. Similar compounds include the selenogermanates and thiostannates. They are in the category of chalcogenidotetrelates or more broadly chalcogenometallates.

<span class="mw-page-title-main">Strontium selenide</span> Chemical compound

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