| | 1 | Author
| Hk Müller-Buschbaum, St Gallinat | Requires cookie* | | | Title
| Synthese und Röntgenstrukturanalyse von KCuGd2Mo40 16 und KCuTb2Mo40 16 Synthesis and X-Ray Analysis of KCuGd2Mo4O i6 and KCuTb2Mo40 I6  | | | | Abstract
| Single crystals of the so far unknown compounds KCuGd2M o4O t6 (I) and KCuTb2M o40 16 (II) have been prepared by flux technique. The compounds crystallize with monoclinic sym metry. space group C^h-C 2 /c with (I): a = 5.278(2), b = 12.666(5), c = 19.604(14) Ä; ß = 92.76(6)°; (II): a = 5.259(13), b = 12.616(3), c = 19.556(9) A, ß = 92.93(4)°, Z = 4. M olyb denum exhibits tetrahedral coordination. The surroundings of copper can be described by distorted tetrahedra, capped by two more distant oxygen atoms, and the rare earth ions show a square antiprism. Potassium is inside an irregular polyhedron. The relationship of the structures o f (I) and (II) is discussed with respect to the KLnMo2Os type compounds. Coulomb term calculations of the lattice energy indicate an oxidation state of copper higher than Cu1. | | | |
Reference
| Z. Naturforsch. 50b, 1794—1798 (1995); eingegangen am 29. Mai 1995 | | | |
Published
| 1995 | | | |
Keywords
| Potassium, Copper Rare Earth Molybdenum Oxide, Crystal Structure | | | |
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| default:Reihe_B/50/ZNB-1995-50b-1794.pdf | | | | Identifier
| ZNB-1995-50b-1794 | | | | Volume
| 50 | |
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