| | 1 | Author
| Angeline Stier, Klaus-Jürgen Range | Requires cookie* | | | Title
| Dicyanometallate, VII [1] Darstellung und Kristallstruktur von Gadolinium-tris-dicyanoaurat (I), Gd[Au(CN)2]3-2,3H20 Dicyano Metallates, VII [1] Preparation and Crystal Structure o f Gadolinium-tris-dicyanoaurate (I), Gd[Au(CN)2]3 -2,3H20  | | | | 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 hexa-gonally, space group P-62m, with a = 6.6319(6), c = 9.108(2) Ä, 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 distanceoof 3.316(2) A, i. e. remarkably shorter than that found in KAu(CN)2 (Au -Au = 3.652(1) Ä). 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. | | | |
Reference
| Z. Naturforsch. 51b, 698—702 (1996); eingegangen am 13. Oktober 1995 | | | |
Published
| 1996 | | | |
Keywords
| Gadolinium-fm-dicyanoaurate(I), Preparation, Crystal Structure | | | |
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| default:Reihe_B/51/ZNB-1996-51b-0698.pdf | | | | Identifier
| ZNB-1996-51b-0698 | | | | Volume
| 51 | |
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