Synthesis and crystal structure of gallosilicate- and aluminogermanate tetrahydroborate sodalites Na8[GaSiO4]6(BH4)2 and Na8[AlGeO4]6(BH4)2

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Josef C. Buhl
  • Thorsten M. Gesing
  • Tanja Höfs
  • Claus H. Rüscher

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OriginalspracheEnglisch
Seiten (von - bis)3877-3882
Seitenumfang6
FachzeitschriftJournal of solid state chemistry
Jahrgang179
Ausgabenummer12
Frühes Online-Datum27 Sept. 2006
PublikationsstatusVeröffentlicht - Dez. 2006

Abstract

Tetrahydroborate enclathrated sodalites with gallosilicate and aluminogermanate host framework were synthesized under mild hydrothermal conditions and characterized by X-ray powder diffraction and IR spectroscopy. Crystal structures were refined in the space group P-43n from X-ray powder data using the Rietveld method. Na8[GaSiO4]6(BH4)2: a=895.90(1) pm, V=0.71909(3)×10-6 nm3, RP=0.074, RB=0.022, Na8[AlGeO4]6(BH4)2: a=905.89(2) pm, V=0.74340(6)×10-6 nm3, RP=0.082, RB=0.026. The tetrahedral framework T-atoms are completely ordered in each case and the boron atoms are located at the centre of the sodalite cages. The hydrogen atoms of the enclathrated BH4- anions were refined on x, x, x positions, restraining them to boron-hydrogen distances of 116.8 pm as found in NaBD4. The IR-absorption spectra of the novel phases show the typical bands of the tetrahedral BH4- group as found in the spectrum of pure sodium boron hydride. The new sodalites are discussed as interesting BH4--containing model compounds which could release pure hydrogen.

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Synthesis and crystal structure of gallosilicate- and aluminogermanate tetrahydroborate sodalites Na8[GaSiO4]6(BH4)2 and Na8[AlGeO4]6(BH4)2. / Buhl, Josef C.; Gesing, Thorsten M.; Höfs, Tanja et al.
in: Journal of solid state chemistry, Jahrgang 179, Nr. 12, 12.2006, S. 3877-3882.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Buhl JC, Gesing TM, Höfs T, Rüscher CH. Synthesis and crystal structure of gallosilicate- and aluminogermanate tetrahydroborate sodalites Na8[GaSiO4]6(BH4)2 and Na8[AlGeO4]6(BH4)2. Journal of solid state chemistry. 2006 Dez;179(12):3877-3882. Epub 2006 Sep 27. doi: 10.1016/j.jssc.2006.08.031
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title = "Synthesis and crystal structure of gallosilicate- and aluminogermanate tetrahydroborate sodalites Na8[GaSiO4]6(BH4)2 and Na8[AlGeO4]6(BH4)2",
abstract = "Tetrahydroborate enclathrated sodalites with gallosilicate and aluminogermanate host framework were synthesized under mild hydrothermal conditions and characterized by X-ray powder diffraction and IR spectroscopy. Crystal structures were refined in the space group P-43n from X-ray powder data using the Rietveld method. Na8[GaSiO4]6(BH4)2: a=895.90(1) pm, V=0.71909(3)×10-6 nm3, RP=0.074, RB=0.022, Na8[AlGeO4]6(BH4)2: a=905.89(2) pm, V=0.74340(6)×10-6 nm3, RP=0.082, RB=0.026. The tetrahedral framework T-atoms are completely ordered in each case and the boron atoms are located at the centre of the sodalite cages. The hydrogen atoms of the enclathrated BH4- anions were refined on x, x, x positions, restraining them to boron-hydrogen distances of 116.8 pm as found in NaBD4. The IR-absorption spectra of the novel phases show the typical bands of the tetrahedral BH4- group as found in the spectrum of pure sodium boron hydride. The new sodalites are discussed as interesting BH4--containing model compounds which could release pure hydrogen.",
keywords = "Aluminogermanates, Crystal structure, Gallosilicates, Hydrothermal synthesis, IR spectroscopy, Powder diffraction",
author = "Buhl, {Josef C.} and Gesing, {Thorsten M.} and Tanja H{\"o}fs and R{\"u}scher, {Claus H.}",
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Download

TY - JOUR

T1 - Synthesis and crystal structure of gallosilicate- and aluminogermanate tetrahydroborate sodalites Na8[GaSiO4]6(BH4)2 and Na8[AlGeO4]6(BH4)2

AU - Buhl, Josef C.

AU - Gesing, Thorsten M.

AU - Höfs, Tanja

AU - Rüscher, Claus H.

PY - 2006/12

Y1 - 2006/12

N2 - Tetrahydroborate enclathrated sodalites with gallosilicate and aluminogermanate host framework were synthesized under mild hydrothermal conditions and characterized by X-ray powder diffraction and IR spectroscopy. Crystal structures were refined in the space group P-43n from X-ray powder data using the Rietveld method. Na8[GaSiO4]6(BH4)2: a=895.90(1) pm, V=0.71909(3)×10-6 nm3, RP=0.074, RB=0.022, Na8[AlGeO4]6(BH4)2: a=905.89(2) pm, V=0.74340(6)×10-6 nm3, RP=0.082, RB=0.026. The tetrahedral framework T-atoms are completely ordered in each case and the boron atoms are located at the centre of the sodalite cages. The hydrogen atoms of the enclathrated BH4- anions were refined on x, x, x positions, restraining them to boron-hydrogen distances of 116.8 pm as found in NaBD4. The IR-absorption spectra of the novel phases show the typical bands of the tetrahedral BH4- group as found in the spectrum of pure sodium boron hydride. The new sodalites are discussed as interesting BH4--containing model compounds which could release pure hydrogen.

AB - Tetrahydroborate enclathrated sodalites with gallosilicate and aluminogermanate host framework were synthesized under mild hydrothermal conditions and characterized by X-ray powder diffraction and IR spectroscopy. Crystal structures were refined in the space group P-43n from X-ray powder data using the Rietveld method. Na8[GaSiO4]6(BH4)2: a=895.90(1) pm, V=0.71909(3)×10-6 nm3, RP=0.074, RB=0.022, Na8[AlGeO4]6(BH4)2: a=905.89(2) pm, V=0.74340(6)×10-6 nm3, RP=0.082, RB=0.026. The tetrahedral framework T-atoms are completely ordered in each case and the boron atoms are located at the centre of the sodalite cages. The hydrogen atoms of the enclathrated BH4- anions were refined on x, x, x positions, restraining them to boron-hydrogen distances of 116.8 pm as found in NaBD4. The IR-absorption spectra of the novel phases show the typical bands of the tetrahedral BH4- group as found in the spectrum of pure sodium boron hydride. The new sodalites are discussed as interesting BH4--containing model compounds which could release pure hydrogen.

KW - Aluminogermanates

KW - Crystal structure

KW - Gallosilicates

KW - Hydrothermal synthesis

KW - IR spectroscopy

KW - Powder diffraction

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