ZfN: Search Results

1	Author	M. Arkus Brylak, Wolfgang Jeitschko	Requires cookie*
	Title	U3TiSb5, U3VSb5, U3CrSb5, and U3MnSb5 with "Anti"-Hf5Sn3Cu Type Structure
	Abstract	The title compounds have been prepared from the elem ental com ponents by arc-melting and subsequent annealing. Single crystals of U 3TiSb5 and U 3M nSb5 were obtained from a tin flux and their structures were determined from single-crystal X-ray data: P 63/mcm, Z = 2; a = 913.9(2), c = 611.2(1) pm, R = 0.011 (233 structure factors, 14 variables) for U 3TiSb5 and a = 916.8(2), c = 613.2(1) pm, R = 0.015 (427 structure factors, 14 variables) for U 3MnSb5. The lattice constants of the isotypic compounds are: a -908.2(2), c = 608.3(2) pm for U 3VSb5 and a -911.0(1), c = 611.5(1) pm for U^CrSb^. The structure of these antimonides may be regarded as an "anti"-type structure of Hf5Sn3Cu with the antimony atoms on the hafnium sites, while the positions of the uranium and transition metal atoms correspond to the posi tions of the tin and copper atoms. A comparison o f the interatomic distances of UVTiSbs with those of U 3Sb4, USb2, and a-antimony suggests oxidation numbers according to (U +III)3Ti+,v(S b l_III)3(S b 2_,I)2, where the Sb2 atoms form weakly bonded chains.
	Reference	Z. Naturforsch. 49b, 747—752 (1994); received D ecem ber 16 1993
	Published	1994
	Keywords	Lattice Constants, Antimonides, X-Ray
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	Identifier	ZNB-1994-49b-0747
	Volume	49

2	Author	Cornelia Mues, Hans-Uwe Schuster	Requires cookie*
	Title	drei neue A 2 ßX-Verbindungen mit B-X-Kettenstruktur Na2AuAs, Na2AuSb, K2AuSb - Three New A2BX Compounds with a B-X Chain Structure
	Abstract	The three new compounds crystallize ortho-rhombically, space group Cmcm with Na2AuAs: a = 887.1(2) pm, 6 = 712.9(2) pm, c = 576.0(2) pm; Na2AuSb: a = 927.9(3) pm, b = 756.2(2) pm, c = 584.1(5) pm; K2AuSb: a = 1045.9(5) pm, 6 = 786.1(3) pm, c = 650.0(5) pm.
	Reference	Z. Naturforsch. 35b, 1055—1058 (1980); eingegangen am 14. April 1980
	Published	1980
	Keywords	Ternary Arsenide, Antimonide, Alkalimetal, Gold, Crystal Structure
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	Identifier	ZNB-1980-35b-1055_n
	Volume	35

3	Author	Albrecht Mewis	Requires cookie*
	Title	AB2X2 Compounds with the CaAl2Si2 Structure, IV [1]
	Abstract	The four ternary compounds CaZn2Sb2, CaCd2Sb2, SrZn2Sb2, and SrCd2Sb2 have been prepared and investigated by X-ray methods. They are isotypic and crystallize trigönally in a CaAl2Si2-type structure (space group P3ml-D3d) with the following constants: CaZn2Sb2 a = 4.441 ± 0.001 A, c = 7.464 ± 0.002 A; CaCd2Sb2 a = 4.649 ± 0.001 A, c = 7.597 ± 0.002 A; SrZn2Sb2 a = 4.500 ± 0.001 A, c = 7,716 ± 0.002 A; SrCd2Sb2 a = 4.709 ± 0.001 A, c = 7.822 ± 0.003 A.
	Reference	Z. Naturforsch. 33b, 382—384 (1978); eingegangen am 23. Januar 1978
	Published	1978
	Keywords	Calcium Compounds, Strontium Compounds, 2 B-Elements, Antimonides, Crystal Structure
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	TEI-XML for	default:Reihe_B/33/ZNB-1978-33b-0382.pdf
	Identifier	ZNB-1978-33b-0382
	Volume	33