Details
| Original language | English |
|---|---|
| Pages (from-to) | 1527-1534 |
| Number of pages | 8 |
| Journal | European Journal of Inorganic Chemistry |
| Issue number | 6 |
| Publication status | Published - 30 Apr 2001 |
Abstract
Sodium hydro sodalite [Na3(H2O)4]2[Al3Si 3O12]2 was subjected to ion exchange with aqueous AgNO3 solutions to yield silver hydro sodalite [Ag3(H2O)4]2[Al3Si 3O12]2. A Rietveld structure refinement of the silver hydro sodalite structure based on powder X-ray diffraction data recorded at room temperature (cubic, a = 8.950 Å, space group P-43n) led to a model where three silver cations form a triangle nearly parallel to a four-membered ring of the sodalite cage. In combination with the four water molecules, a disorder model [Ag3(μ-H2O)2(H2O) 2]3+ is suggested. This structural arrangement is clearly different from that found in sodium hydro sodalite. Whereas the sodium hydro sodalite structure is dominated by cation-water interactions, the silver hydro sodalite structure reflects strong interactions between the cations and the oxygen atoms of the framework, strong interactions between the water molecules, but only weak ones between the cations and water molecules. In addition, weak Ag+⋯Ag+ interactions may play a role. 1H MAS NMR spectra show that the hydrogen atoms (which were not found in the Rietveld analysis) of the water molecules are involved in hydrogen bonding of different strengths and dynamics.
Keywords
- Ion exchange, Rietveld refinement, Silver, Sodalite
ASJC Scopus subject areas
- Chemistry(all)
- Inorganic Chemistry
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In: European Journal of Inorganic Chemistry, No. 6, 30.04.2001, p. 1527-1534.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Silver hydro sodalite [Ag3(H2O)4]2[Al3Si 3O12]2
T2 - Synthesis and structure determination by combination of X-ray rietveld refinement, thermogravimetry, FT-IR, and 1H-MAS NMR spectroscopy
AU - Eiden-Aßmann, Stefanie
AU - Schneider, Andreas M.
AU - Behrens, Peter
AU - Engelhardt, Guenter
AU - Mändar, Hugo
AU - Felsche, Juergen
PY - 2001/4/30
Y1 - 2001/4/30
N2 - Sodium hydro sodalite [Na3(H2O)4]2[Al3Si 3O12]2 was subjected to ion exchange with aqueous AgNO3 solutions to yield silver hydro sodalite [Ag3(H2O)4]2[Al3Si 3O12]2. A Rietveld structure refinement of the silver hydro sodalite structure based on powder X-ray diffraction data recorded at room temperature (cubic, a = 8.950 Å, space group P-43n) led to a model where three silver cations form a triangle nearly parallel to a four-membered ring of the sodalite cage. In combination with the four water molecules, a disorder model [Ag3(μ-H2O)2(H2O) 2]3+ is suggested. This structural arrangement is clearly different from that found in sodium hydro sodalite. Whereas the sodium hydro sodalite structure is dominated by cation-water interactions, the silver hydro sodalite structure reflects strong interactions between the cations and the oxygen atoms of the framework, strong interactions between the water molecules, but only weak ones between the cations and water molecules. In addition, weak Ag+⋯Ag+ interactions may play a role. 1H MAS NMR spectra show that the hydrogen atoms (which were not found in the Rietveld analysis) of the water molecules are involved in hydrogen bonding of different strengths and dynamics.
AB - Sodium hydro sodalite [Na3(H2O)4]2[Al3Si 3O12]2 was subjected to ion exchange with aqueous AgNO3 solutions to yield silver hydro sodalite [Ag3(H2O)4]2[Al3Si 3O12]2. A Rietveld structure refinement of the silver hydro sodalite structure based on powder X-ray diffraction data recorded at room temperature (cubic, a = 8.950 Å, space group P-43n) led to a model where three silver cations form a triangle nearly parallel to a four-membered ring of the sodalite cage. In combination with the four water molecules, a disorder model [Ag3(μ-H2O)2(H2O) 2]3+ is suggested. This structural arrangement is clearly different from that found in sodium hydro sodalite. Whereas the sodium hydro sodalite structure is dominated by cation-water interactions, the silver hydro sodalite structure reflects strong interactions between the cations and the oxygen atoms of the framework, strong interactions between the water molecules, but only weak ones between the cations and water molecules. In addition, weak Ag+⋯Ag+ interactions may play a role. 1H MAS NMR spectra show that the hydrogen atoms (which were not found in the Rietveld analysis) of the water molecules are involved in hydrogen bonding of different strengths and dynamics.
KW - Ion exchange
KW - Rietveld refinement
KW - Silver
KW - Sodalite
UR - http://www.scopus.com/inward/record.url?scp=0035019765&partnerID=8YFLogxK
U2 - 10.1002/1099-0682(200106)2001:6<1527::AID-EJIC1527>3.0.CO;2-F
DO - 10.1002/1099-0682(200106)2001:6<1527::AID-EJIC1527>3.0.CO;2-F
M3 - Article
AN - SCOPUS:0035019765
SP - 1527
EP - 1534
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
SN - 1434-1948
IS - 6
ER -