Synthesis and Characterization of the Quaternary Thioaluminogermanates  A (AlS 2 )(GeS 2 ) ( A  = Na, K) | Zendy

AlBloushi Mohammed | Zendy; Davaasuren Bambar | Zendy; Emwas AbdulHamid | Zendy; Rothenberger Alexander | Zendy

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Synthesis and Characterization of the Quaternary Thioaluminogermanates A (AlS 2 )(GeS 2 ) ( A = Na, K)

Author(s) -

AlBloushi Mohammed,

Davaasuren Bambar,

Emwas AbdulHamid,

Rothenberger Alexander

Publication year - 2015

Publication title -

zeitschrift für anorganische und allgemeine chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.354

H-Index - 66

eISSN - 1521-3749

pISSN - 0044-2313

DOI - 10.1002/zaac.201500021

Subject(s) - tetragonal crystal system , crystallography , tetrahedron , alkali metal , crystal structure , band gap , quaternary , chemistry , materials science , geology , optoelectronics , organic chemistry , paleontology

The quaternary thioaluminogermanates Na(AlS 2 )(GeS 2 ) ( 1 ) and K(AlS 2 )(GeS 2 ) ( 2 ) crystallize in the tetragonal space group I 4/ mcm (no. 140) with unit cell parameters a = 7.4274(11) Å, c = 5.8560(12) Å for Na(AlS 2 )(GeS 2 ) and a = 7.8826(2) Å, c = 5.8642(4) Å for K(AlS 2 )(GeS 2 ). The crystal structure comprises of one‐dimensional [(AlS 2 )(GeS 2 )] – anionic chains with Al and Ge sharing the tetrahedral site. The alkali metal cations fill the square antiprismatic voids between chains. Both 1 and 2 are semiconductors with bandgap of around 3.6 eV and 3.5 eV, respectively.

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