| | 1 | Author
| B. Wulff, Hk Wedel, Müller-Buschbaum | Requires cookie* | | | Title
| Zur Kristallchemie von Telluraten mit Mn2+ im kationischen und anionischen Teil der Kristallstruktur: (Mn2?4Cuo,6)Te06, Ba2M nTe06 und Pb(Mn0,5 Te0,5 )O3 On the Crystal Chemistry of Tellurates Containing Mn2+ in the Cationic and Anionic Part of the Crystal Structure: (Mn2 4Cu0 6)Te06, Ba2MnTe06 and Pb(Mn0 5Te0 5) 0 3 L  | | | | Abstract
| Single crystals of (Mn2.4Cu0 6)Te06 (I), Ba2MnTe06 (II) and Pb(Mn0 5Te0 5) 0 3 (III) have been prepared by crystallization from fluxes. X-ray investigations led to rhombohedric sym metry (I): R3, (II): R3m with the trigonal lattice constants (I): a = 8.826(1), c = 10.687(2) Ä, Z = 2. (II): a = 5.817(8), c = 14.244(3) A, Z = 3. Compound (III) crystallizes with cubic symmetry P43m, a = 4.045(3) A, Z = 1. (I) is the first example of a manganese(II) tellurate and belongs to the structure type of A3X 0 6 compounds like (Mn2In)Sb06, Mn3W 0 6 and Ca3U 0 6. (II) exemplifies an ordered and (III) a disordered variation of the perovskites. | | | |
Reference
| (Z. Naturforsch. 53b, 49—52 [1998]; eingegangen am 15. Oktober 1997) | | | |
Published
| 1998 | | | |
Keywords
| Manganese, Copper, Lead, Barium, Tellurates | | | |
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| default:Reihe_B/53/ZNB-1998-53b-0049.pdf | | | | Identifier
| ZNB-1998-53b-0049 | | | | Volume
| 53 | |
| 2 | Author
| Z. Naturforsch | Requires cookie* | | | Title
| Ag+ als Substituent eines Alkalimetalls in Ag2SrMnV20 8 | | | | Abstract
| Single crystals of Ag2 SrM nV20 8 have been prepared by reactions of metallic silver and a mixture of S rC 0 3, M nC 03 HoO and V ?0 5. X-Ray investigations showed monoclinic symmetry, space group Cfh-C2/c, a = 9.7022(9), b = 5.5882(5), c = 13.894(1), ß = 90.41(1)°, Z = 4. The crystal structure is isotypic to N a2BaCuV20 8 and includes V 0 4 tetrahedra, M n 0 6 octahedra as well as irregular A g 0 8 and S rO !0 polyhedra. Ag2SrM nV20 8 is characterized by a [MnV20 8] network incorporating Ag+ and S r + or a [Ag2V 2Ö 8] frame incorporating Mn2+ and Sr2+ ions. Ag+ is able to replace an alkali ion in the cationic part of the crystal structure. | | | |
Reference
| Z. Naturforsch. 53b, 279—282 (1998); eingegangen am 17. November 1997 | | | |
Published
| 1998 | | | |
Keywords
| Silver, Strontium, Manganese, Vanadium Oxide | | | |
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| default:Reihe_B/53/ZNB-1998-53b-0279.pdf | | | | Identifier
| ZNB-1998-53b-0279 | | | | Volume
| 53 | |
| 3 | Author
| Hk Wulff, Müller-Buschbaum | Requires cookie* | | | Title
| Isolierte trigonale S r 0 6-Prismen verknüpfen Kagome-Netze im Strontium-Manganat(I V)-Tellurat( VI): SrMnTe06 Kagome Layers Connected by Isolated Trigonal Sr06 Prisms in the Strontium Manganate(IV) Tellurate(VI): SrMnTe06 L | | | | Abstract
| Single crystals of the hitherto unknown compound SrM nT e06 have been prepared from Sr(0H)2-8H20 , M n C 0 3(aq) and T e 0 2 in air by crystallization below the melt range. X-ray in vestigations showed hexagonal symmetry, space group D3h-P62m, lattice constants a = 5.143(1), c = 5.384(2) A, Z = 1. SrM nTe06 is characterized by staggered [(Mn/Te)60 18] Kagome layers along [001]. These layers are connected by Sr2+ ions, resulting in S r0 6 prisms isolated from each other. The structure is discussed with respect to the connection of Kagome nets in the quaternary oxides of the Ba3Ln40 9 type. | | | |
Reference
| Z. Naturforsch. 53b, 283—286 (1998); eingegangen am 7. November 1997 | | | |
Published
| 1998 | | | |
Keywords
| Strontium, Manganese, Tellurate, Crystal Structure | | | |
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| default:Reihe_B/53/ZNB-1998-53b-0283.pdf | | | | Identifier
| ZNB-1998-53b-0283 | | | | Volume
| 53 | |
| 6 | Author
| M. Staack, Hk Müller-Buschbaum | Requires cookie* | | | Title
| Ba4M n2Ag20(As04)4? ein Barium-Mangan-Oxid-Arsenat mit nichtlinearen O-Ag-O-Hanteln. Ba4Mn2Ag2 0 (As0 4 )4, a Barium Manganese Oxide-Arsenate Showing Nonlinear O-Ag-O Dumbbells | | | | Abstract
| Single crystals of Ba4Mn2 Ag20 (A s04)4 have been prepared by solid state reactions using me tallic silver as reactant. X-ray techniques led to monoclinic symmetry, space group D2h-P2,/m, | | | |
Reference
| Z. Naturforsch. 53b, 512—516 (1998); eingegangen am 29. Januar 1998 | | | |
Published
| 1998 | | | |
Keywords
| Barium, Manganese, Silver, Oxide-Arsenate, Crystal Structure | | | |
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| default:Reihe_B/53/ZNB-1998-53b-0512.pdf | | | | Identifier
| ZNB-1998-53b-0512 | | | | Volume
| 53 | |
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