Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb 3(AlQ2)3(GeQ2)7 (Q = S, Se)

Alexander Rothenberger; Maryam Shafaei-Fallah; Mercouri G. Kanatzidis

doi:10.1021/ic101627v

Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb ₃(AlQ₂)₃(GeQ₂)₇ (Q = S, Se)

Alexander Rothenberger, Maryam Shafaei-Fallah, Mercouri G. Kanatzidis

Northwestern University

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The new compounds Rb₃(AlQ₂)₃(GeQ ₂)₇ [Q = S (1), Se (2)] feature the 3D anionic open framework [(AlQ₂)₃(GeQ₂)₇] ^3- in which aluminum and germanium share tetrahedral coordination sites. Rb ions are located in channels formed by the connection of 8, 10, and 16 (Ge/Al)S₄ tetrahedra. The isostructural sulfur and selenium derivatives crystallize in the space group P2₁/c. 1: a = 6.7537(3) Å, b = 37.7825(19) Å, c = 6.7515(3) Å, and β = 90.655(4)°. 2: a = 7.0580(5) Å, b = 39.419(2) Å, c = 7.0412(4) Å, β = 90.360(5)°, and Z = 2 at 190(2) K. The band gaps of the congruently melting chalcogenogermanates are 3.1 eV (1) and 2.4 eV (2).

Original language	English
Pages (from-to)	9749-9751
Number of pages	3
Journal	Inorganic Chemistry
Volume	49
Issue number	21
DOIs	https://doi.org/10.1021/ic101627v
Publication status	Published - Nov 1 2010

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{34a5ab0d10ff4ad3aadb924bac6d249a,

title = "Aluminosilicate Relatives: Chalcogenoaluminogermanates Rb 3(AlQ2)3(GeQ2)7 (Q = S, Se)",

abstract = "The new compounds Rb3(AlQ2)3(GeQ 2)7 [Q = S (1), Se (2)] feature the 3D anionic open framework [(AlQ2)3(GeQ2)7] 3- in which aluminum and germanium share tetrahedral coordination sites. Rb ions are located in channels formed by the connection of 8, 10, and 16 (Ge/Al)S4 tetrahedra. The isostructural sulfur and selenium derivatives crystallize in the space group P21/c. 1: a = 6.7537(3) {\AA}, b = 37.7825(19) {\AA}, c = 6.7515(3) {\AA}, and β = 90.655(4)°. 2: a = 7.0580(5) {\AA}, b = 39.419(2) {\AA}, c = 7.0412(4) {\AA}, β = 90.360(5)°, and Z = 2 at 190(2) K. The band gaps of the congruently melting chalcogenogermanates are 3.1 eV (1) and 2.4 eV (2).",

author = "Alexander Rothenberger and Maryam Shafaei-Fallah and Kanatzidis, {Mercouri G.}",

year = "2010",

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doi = "10.1021/ic101627v",

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AU - Rothenberger, Alexander

AU - Shafaei-Fallah, Maryam

AU - Kanatzidis, Mercouri G.

PY - 2010/11/1

Y1 - 2010/11/1

N2 - The new compounds Rb3(AlQ2)3(GeQ 2)7 [Q = S (1), Se (2)] feature the 3D anionic open framework [(AlQ2)3(GeQ2)7] 3- in which aluminum and germanium share tetrahedral coordination sites. Rb ions are located in channels formed by the connection of 8, 10, and 16 (Ge/Al)S4 tetrahedra. The isostructural sulfur and selenium derivatives crystallize in the space group P21/c. 1: a = 6.7537(3) Å, b = 37.7825(19) Å, c = 6.7515(3) Å, and β = 90.655(4)°. 2: a = 7.0580(5) Å, b = 39.419(2) Å, c = 7.0412(4) Å, β = 90.360(5)°, and Z = 2 at 190(2) K. The band gaps of the congruently melting chalcogenogermanates are 3.1 eV (1) and 2.4 eV (2).

AB - The new compounds Rb3(AlQ2)3(GeQ 2)7 [Q = S (1), Se (2)] feature the 3D anionic open framework [(AlQ2)3(GeQ2)7] 3- in which aluminum and germanium share tetrahedral coordination sites. Rb ions are located in channels formed by the connection of 8, 10, and 16 (Ge/Al)S4 tetrahedra. The isostructural sulfur and selenium derivatives crystallize in the space group P21/c. 1: a = 6.7537(3) Å, b = 37.7825(19) Å, c = 6.7515(3) Å, and β = 90.655(4)°. 2: a = 7.0580(5) Å, b = 39.419(2) Å, c = 7.0412(4) Å, β = 90.360(5)°, and Z = 2 at 190(2) K. The band gaps of the congruently melting chalcogenogermanates are 3.1 eV (1) and 2.4 eV (2).

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