ANDRATSCHKE, M and RANGE, KJ and WEIGL, C and SCHIESSL, U and RAU, F (1994) THE CRYSTAL-STRUCTURE OF TLZNPO4 AND TLZNASO4. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 49 (9). pp. 1282-1288. ISSN 0932-0776,
Full text not available from this repository.Abstract
Single crystals of the title compounds were obtained by high pressure synthesis in a modified Belt type apparatus. The compounds crystallize in the monoclinic system (space group P2(1)) with a = 8.732(2), b = 5.468(1), c = 8.841(2)Angstrom, beta = 90.61(2)degrees for TlZnPO4 and a = 8.921(3), b = 5.631(1), c = 8.958(3)Angstrom, beta = 91.03(2)degrees for TlZnAsO4, Z = 4. The structures were refined from diffractometer data to R = 0.072, R(w) = 0.050 for 3700 (TlZnPO4) and to R = 0.093, R(w) = 0.067 for 3943 (TlZnAsO4) independent absorption corrected reflections. The compounds are isotypic and belong to the ''stuffed derivatives'' of the Icmm structure type with a (ZnXO(4))(-) network of alternating corner linked ZnO4 and XO(4) tetrahedra (X = P, As) forming channels of six-membered rings in the direction of the a axis. These cavities contain two crystallographically independent Tl cations in an irregular coordination by eight nearest oxygen atoms.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TEMPERATURE PHASE; X-RAY; SULFATE; THALLIUM ZINC ORTHOPHOSPHATE; THALLIUM ZINC ORTHOARSENATE; CRYSTAL STRUCTURE |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:40 |
| URI: | https://pred.uni-regensburg.de/id/eprint/53130 |
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