Loading...
|
Please use this identifier to cite or link to this item:
http://140.128.103.80:8080/handle/310901/23256
|
| Title: | Flux synthesis, crystal structures, and luminescence properties of salt-inclusion lanthanide silicates: [K9F2][Ln 3Si12O32] (Ln = Sm, Eu, Gd) |
| Authors: | Tang, M.-F.a, Chiang, P.-Y.a, Su, Y.-H.a, Jung, Y.-C.a, Hou, G.-Y.a, Chang, B.-C.a, Lii, K.-H.ab |
| Contributors: | Department of Life Science, Tunghai University |
| Date: | 2008 |
| Issue Date: | 2013-06-11T09:05:08Z (UTC)
|
| Abstract: | New salt-inclusion lanthanide silicates, [K9F 2][Ln3Si12O32] (Ln = Sm, Eu, Gd), have been synthesized using a KF-MoO3 flux, and structurally characterized by single-crystal and powder X-ray diffraction. The structures of these three isostructural compounds consist of open-branched f?nfer silicate single layers with six-, eight-, and twelve-membered rings, which are connected via LnO6 octahedra to form a 3-D framework. The F - and K+ ions are located in the structural channels and form a F2K7 dimer with a structure similar to that of Cl2O7. The photoluminescence properties of the Eu compound have also been studied. The sharp peaks in the room-temperature emission spectrum are assigned and the relative intensities of the 5D 0 → 7F1 and 5D0 → 7F2 transitions are consistent with the crystallography results. Crystal data for the Eu compound: triclinic, space group P1 (No. 2), a = 6.8989(2) ?, b = 11.3834(4) ?, c = 11.4955(4) ?, α = 87.620(2)°, β = 89.532(2)°, γ = 80.221(2)°, and Z = 2. Crystal data for the Sm compound: The same as those for the Eu compound except a = 6.9152(6) ?, b = 11.400(1) ?, c = 11.531(1) ?, α = 87.610(1)°, β = 89.445(1)°, and γ = 80.081(1)°. ? 2008 American Chemical Society. |
| Relation: | Inorganic Chemistry
Volume 47, Issue 19, 6 October 2008, Pages 8985-8989 |
| Appears in Collections: | [生命科學系所] 期刊論文
|
Files in This Item:
| File |
Size | Format | |
|---|
| index.html | 0Kb | HTML | 191 | View/Open |
|
All items in THUIR are protected by copyright, with all rights reserved.
|
