Stier, Angeline and Range, Klaus-Jürgen (1996) Dicyano metallates .7. Preparation and crystal structure of gadolinium-tris-dicyanoaurate (I), Gd[Au(CN)(2)](3)center dot 2,3H(2)O. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 51 (5). pp. 698-702. ISSN 0932-0776, 1865-7117
Full text not available from this repository.Abstract
The title compound has been prepared by adding a stoichiometric amount of gadolinium nitrate hexahydrate to an aqueous solution of potassium dicyanoaurate(I). Single crystals could be obtained by slow evaporation from the saturated solution. The compound crystallizes hexagonally, space group P-62m, with a = 6.6319(6), c = 9.108(2) Angstrom, c/a = 1.3734 and Z = 1. The structure comprises layers of considerably bent dicyanoaurate groups. The gold atoms form a nearly regular 3.6.3.6 - Kagome net with a layer sequence AA.. and an Au - Au distance of 3.316(2) Angstrom, i.e. remarkably shorter than that found in KAu(CN)(2) (Au - Au = 3.652(1) Angstrom). Above and below the gold layers, the terminal nitrogen atoms of the dicyanoaurate groups build up a two-dimensional net work in the a,b plane, thereby creating trigonal-prismatic holes, which are occupied by the gadolinium ions. Up to three water molecules per unit cell complete the coordination sphere around the gadolinium ion to form a tricapped trigonal prism. The analogous compounds with Ln = Sm, Eu, Tb and Dy are obviously isostructural with the Gd compound, as can be inferred from preliminary X-ray studies.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DICYANOARGENTATE(I); gadolinium-tris-dicyanoaurate(I); preparation; crystal structure |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Alumni or Retired Professors > Prof. Dr. Klaus-Jürgen Range |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jul 2023 09:48 |
| Last Modified: | 06 Jul 2023 09:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51759 |
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