Details
| Original language | English |
|---|---|
| Pages (from-to) | 3877-3882 |
| Number of pages | 6 |
| Journal | Journal of solid state chemistry |
| Volume | 179 |
| Issue number | 12 |
| Early online date | 27 Sept 2006 |
| Publication status | Published - Dec 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.
Keywords
- Aluminogermanates, Crystal structure, Gallosilicates, Hydrothermal synthesis, IR spectroscopy, Powder diffraction
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Ceramics and Composites
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Physical and Theoretical Chemistry
- Chemistry(all)
- Inorganic Chemistry
- Materials Science(all)
- Materials Chemistry
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Journal of solid state chemistry, Vol. 179, No. 12, 12.2006, p. 3877-3882.
Research output: Contribution to journal › Article › Research › peer review
}
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
UR - http://www.scopus.com/inward/record.url?scp=33751399677&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2006.08.031
DO - 10.1016/j.jssc.2006.08.031
M3 - Article
AN - SCOPUS:33751399677
VL - 179
SP - 3877
EP - 3882
JO - Journal of solid state chemistry
JF - Journal of solid state chemistry
SN - 0022-4596
IS - 12
ER -