ZfN: Search Results

1	Author	S. Meyer, Hk Müller-Buschbaum	Requires cookie*
	Title	Kantenverknüpfte V 0 6-0ktaeder und P 0 4-Tetraeder in BaC a(V 0)(P04)2 Edge-Connected V 0 6 Octahedra and P 0 4 Tetrahedra in BaCa(V0)(P04)2
	Abstract	Single crystals of the new compound BaCa(V0)(P04)2 have been prepared by solid state reactions below the melting point of the reactants in evacuated quartz tubes. X-ray investigations led to monoclinic symmetry, space group C2h-P2 i/c, a = 7.300(1), b = 7.053(1), c = 14.460(1) A, ß = 101,43(1)°, Z = 4. The crystal structure is characterized by layers of corner-and edge-connected P 0 4 tetrahedra and VO,+5 octahedra. There is an unusually short 0 (1)-0(4) distance in a V 0 6 octahedron of 2.44 A associated with the sharing of edges with P 0 4 tetrahedra. The short V-0 distance of 1.61 A indicates a vanadyl group.
	Reference	Z. Naturforsch. 52b, 549—552 (1997); eingegangen am 25. Februar 1997
	Published	1997
	Keywords	Barium, Zinc, Vanadium Phosphate, Crystal Structure
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	TEI-XML for	default:Reihe_B/52/ZNB-1997-52b-0549.pdf
	Identifier	ZNB-1997-52b-0549
	Volume	52

2	Author	S. Meyer, Hk Müller-Buschbaum	Requires cookie*
	Title	Kurze O-O-Abstände einer gemeinsamen Polyederkante bei Verknüpfung von P 0 4-Tetraedern mit V 0 6-0ktaedern im Vanadyl-Orthophosphat C aN i(V 0)(P04)2 Short 0 -0 Distances in Edge Sharing P 0 4 Tetrahedra and V 0 6 Octahedra o f the Vanadyl- Orthophosphate C a N i(V 0 )(P 0 4)2
	Abstract	Single crystals of the new compound C aN i(V 0)(P 04)2 have been prepared by solid state reactions below the melting point of the oxide mixture in evacuated quartz tubes. X-ray inve stigations ledoto orthorhom bic symmetry, space group D2£-Pnma, a -14.113(1), b -6.408(1), c = 7.364(1) A, Z = 4. The crystal structure shows J. [N i0 4] and J. [V 0 6P20 3] polyhedra chains closely related to analogous chains in the isotypic compound CdV20 (P 0 4)2. The short V -0 distance of 1.66 A indicates a vanadyl group as the main difference to CdV20 (P 0 4)2. The short 0 -0 distance of 2,395 A of the edge-sharing P 0 4 tetrahedra and V 0 6 octahedra is discussed.
	Reference	Z. Naturforsch. 52b, 981—984 (1997); eingegangen am 12. Mai 1997
	Published	1997
	Keywords	Calcium, Nickel, Vanadium Phosphate, Crystal Structure
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	TEI-XML for	default:Reihe_B/52/ZNB-1997-52b-0981.pdf
	Identifier	ZNB-1997-52b-0981
	Volume	52

3	Author	S. Meyer, B. Mertens, Hk Müller-Buschbaum	Requires cookie*
	Title	SrZn
	Abstract	(V0)(P04)2 und BaC d(V 0)(P04)2: Zum BaZn(V0)(P04)2-Typ verwandte, jedoch nicht isotype Vanadylphosphate SrZ n(V 0)(P 04)2 and B a C d (V 0)(P 04)2: Vanadylphosphates Related but not Isotypic to the B aZ n (V 0)(P 04)2 Type Single crystals of the compounds S rZ n (V 0)(P 0 4)2 (I) and B aC d(V 0)(P04)2 (II) ha ve been prepared by solid state reactions in evacuated quartz tubes. X-ray investigati ons confirmed orthorhombic symmetry, space group D ^-P bca, lattice constants a/b/c (I): 9.066(1)/9 .0 1 2 (l)/l7.513(1) A and (II); 8.838(4)/8.915(4)/19.374(9) Ä, Z = 8. Initially assu med isotypies of (I) and (II) to B aZ n(V 0)(P 04)2 proved to be erroneous considering significant details of the connectivity of the Z n 0 4 and P 0 4 tetrahedra (I) and the coordination sphere of cadmium (II), respectively. The similarities and differences of the crystal chemistry relation to (I) and (II) are discussed with respect to B a Z n(V 0)(P 04)2. The Coulomb terms of the lattice energies of vanadyl M2(V 0)(P 0 4)2 and divanadyl M (V 0)2(P 0 4)2 phosphates are shown.
	Reference	Z. Naturforsch. 52b, 985—988 (1997); eingegangen am 20. Mai 1997
	Published	1997
	Keywords	Barium, Strontium, Cadmium, Zinc, Vanadium Phosphate
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	TEI-XML for	default:Reihe_B/52/ZNB-1997-52b-0985.pdf
	Identifier	ZNB-1997-52b-0985
	Volume	52