Arsenidogermanate Explained

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]

List

name	formula	formulaweight	crystalsystem	spacegroup	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	P	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	P	a = 8.269, b = 8.452, c = 8.735, α = 71.163°, β = 75.601°, γ = 73.673°, Z=4			Ge2As6 units
	Sr3Ge2As4							red metallic; 1D As3GeGeAs3 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
	RbGe3As3	528	orthorhombic	Pnma	a=10.166 b=3.7595 c=19.028 Z=4	727.2	4.823
	Rb(Ge1.5In0.5)As2(As1.5Ge0.5)		orthorhombic	Cmc21	a = 3.799, b = 16.50, c = 12.24, Z = 4	767	4.589
	RbXGe2−XInXAs4
	I8As21Ge25	4403	cubic	Pmn	a=10.5963 Z=1	1189.8	6.1431	colourless	^[13]
	Cs5GeAs3							metallic; unstable in air; GeAs3 units	^[14]
	BaGe2As2		tetragonal	P42mc	a=7,786 c=8.664 Z=4	525.2	5.47	metallic	^[15]
	Ba4GeAs4							dark metallic; GeAs4 units	^[16]
	Re3Ge0.6As6.4								^[17]
	Re3GeAs6	1080.75	cubic	Imm	a = 8.73202 Z=4	665.75	10.78	n-type semiconductor
	AuGeAs		monoclinic	Cc	a 7.2729, b 6.2953, c 6.3067, β 119.209°				^[18]
	KXGe2−XTlXAs4

Notes and References

1. Stöhr. Herbert. Klemm. Wilhelm. 1940-07-09. Über Zweistoffsysteme mit Germanium. II. Germanium/Arsen, Germanium/Antimon, Germanium/Wismut. Zeitschrift für anorganische und allgemeine Chemie. en. 244. 2. 205–223. 10.1002/zaac.19402440211.
2. Mark. Justin. Hanrahan. Michael P.. Woo. Katherine E.. Lee. Shannon. Rossini. Aaron J.. Kovnir. Kirill. 2 May 2019. Chemical and Electrochemical Lithiation of van der Waals Tetrel‐Arsenides. Chemistry – A European Journal. 25. 25. 6392–6401. 10.1002/chem.201900339. 30887569. 1526289 . 83463348.
3. Juza. Robert. Schulz. Werner. February 1954. Ternäre Phosphide und Arsenide des Lithiums mit Elementen der 3. und 4. Gruppe. Zeitschrift für anorganische und allgemeine Chemie. de. 275. 1–3. 65–78. 10.1002/zaac.19542750107. 0044-2313.
4. Khatun. Mansura. Mar. Arthur. 2016-05-01. NaGe₆As₆: Insertion of sodium into the layered semiconductor germanium arsenide GeAs. Zeitschrift für Naturforschung B. en. 71. 5. 375–380. 10.1515/znb-2015-0203. 197298002. 1865-7117.
5. 1991-02-01. Eisenmann. B.. Klein. J.. Somer. M.. Crystal structure of decasodium di-μ-arsenido-bis(diarsenidogermanate), Na₁₀Ge₂As₆. Zeitschrift für Kristallographie - Crystalline Materials. en. 197. 3–4. 265–266. 10.1524/zkri.1991.197.3-4.265. 1991ZK....197..265E. 2194-4946. Eisenmann. B.. Klein. J.. Somer. M..
6. Eisenmann. Brigitte. Klein. Jürgen. September 1991. SiS₂-isostrukturelle Anionen [SiP₂²⁻], [GeAs₂²⁻] und [SnAs₂²⁻] in Alkaliverbindungen]. Journal of the Less Common Metals. de. 175. 1. 109–117. 10.1016/0022-5088(91)90355-8.
7. Khatun. Mansura. Stoyko. Stanislav S.. Mar. Arthur. June 2016. Ternary arsenides ATt₃As₃ (A=K, Rb; Tt=Ge, Sn) with layered structures. Journal of Solid State Chemistry. 238. 229–235. 2016JSSCh.238..229K. 10.1016/j.jssc.2016.03.035.
8. Eulenstein. Armin R.. Bogdanovski. Dimitri. Reinhardt. Hendrik. Miß. Vanessa. Roling. Bernhard. Hampp. Norbert. Dronskowski. Richard. Dehnen. Stefanie. 12 November 2019. K₂Ge₃As₃: Fiberlike Crystals of a Narrow-Band-Gap Zintl Phase with a One-Dimensional Substructure _∞¹. Chemistry of Materials. 31. 21. 8839–8849. 10.1021/acs.chemmater.9b02827. 204116281.
9. Somer. Mehmet. Peters. Karl. von Schnering. Hans Georg. July 1992. K₂NaGaP₂, Cs₂NaGaP₂, K₂NaGaAs₂, K₂NaInP₂ und K₂NaInAs₂, Verbindungen mit den SiS₂-isosteren Polyanionen [MX_4/2]³⁻ (M=Ga, In; X=P, As)]. Zeitschrift für anorganische und allgemeine Chemie. de. 613. 7. 19–25. 10.1002/zaac.19926130103. 0044-2313.
10. Khatun. Mansura. Stoyko. Stanislav S.. Mar. Arthur. 21 July 2014. Quaternary Arsenides ACdGeAs₂ (A = K, Rb) Built of Ethane-Like Ge₂As₆ Units. Inorganic Chemistry. 53. 14. 7756–7762. 10.1021/ic5011264. 24983676.
11. Eisenmann. Brigitte. Schäfer. Herbert. June 1980. Zintl Phases with Complex Anions: Sr₃Si₂As₄ and Sr₃Ge₂As₄. Angewandte Chemie International Edition in English. 19. 6. 490–491. 10.1002/anie.198004901.
12. Shreeve-Keyer. Julie L. Haushalter. Robert C. Lee. Young-Sook. Li. Sichu. O'Connor. Charles J. Seo. Dong-Kyun. Whangbo. Myung-Hwan. May 1997. New Layered Materials in the K–In–Ge–As System: K₈In₈Ge₅As₁₇ and K₅In₅Ge₅As₁₄. Journal of Solid State Chemistry. 130. 2. 234–249. 10.1006/jssc.1996.7210. 1997JSSCh.130..234S.
13. Ayouz. Katia. Kars. Mohammed. Rebbah. Allaoua. Rebbah. Houria. 15 March 2009. I₈As₂₁Ge₂₅. Acta Crystallographica Section E. 65. 3. i15. 10.1107/S1600536809004991. 21582033. 2968696.
14. Eisenmann. Brigitte. Klein. Jürgen. Somer. Mehmet. January 1990. Anions Isosteric with CO₃²⁻ in Cs₅SiP₃, Cs₅SiAs₃, Cs₅GeP₃, and Cs₅GeAs₃. Angewandte Chemie International Edition in English. 29. 1. 87–88. 10.1002/anie.199000871.
15. Eisenmann. Brigitte. Schäfer. Herbert. 1981-04-01. Zintlphasen mit binären Anionen: Zur Kenntnis von BaGe₂P₂ und BaGe₂As₂ / Zintl Phases with Binary Anions: BaGe₂P₂ and BaGe₂As₂. Zeitschrift für Naturforschung B. en. 36. 4. 415–419. 10.1515/znb-1981-0403. 95993285. 1865-7117. free.
16. Eisenmann. Brigitte. Jordan. Hanna. Schäfer. Herbert. February 1981. Ba₄SiAs₄, and Ba₄GeAs₄, Zintl Phases with Isolated SiAs₄⁸⁻ and GeAs₄⁸⁻ anions. Angewandte Chemie International Edition in English. 20. 2. 197–198. 10.1002/anie.198101972.
17. Soheilnia. Navid. Xu. Hong. Zhang. Huqin. Tritt. Terry M.. Swainson. Ian. Kleinke. Holger. 1 August 2007. Thermoelectric Properties of Re₃Ge_0.6As_6.4 and Re₃GeAs₆ in Comparison to Mo₃Sb_5.4Te_1.6. Chemistry of Materials. 19. 16. 4063–4068. 10.1021/cm0708517.
18. Lee. Shannon J.. Won. Juyeon. Wang. Lin‐Lin. Jing. Dapeng. Harmer. Colin P.. Mark. Justin. Akopov. Georgiy. Kovnir. Kirill. 6 May 2021. New Noncentrosymmetric Tetrel Pnictides Composed of Square‐Planar Gold(I) with Peculiar Bonding. Chemistry – A European Journal. 27. 26. 7383–7390. 10.1002/chem.202005312. 33523500. 8251799.