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1Author    J.Nomssi Nzali, W. HoyerRequires cookie*
 Title    X-ray Investigations of Liquid Bismuth-Copper Alloys  
 Abstract    Liquid copper, bismuth, and eleven bismuth-copper alloys were investigated at temperatures above the liquidus with X-ray diffraction. The experimental procedure was adjusted to reduce the effects of evaporation. The Faber-Ziman total structure factors S(Q) feature a splitting of the first maximum and negative values for Q around 1 A -1 in a large concentration range. The results are compared to previous neutron diffraction results by Zaiss and Steeb, to square-well potential model calculations by Gopala Rao and Satpathy and to a simple segregation model. The segregation model reproduces the features qualitatively. Partial structure factors are assessed by fitting both neutron and X-ray scattering results with reverse Monte-Carlo simulation. 
  Reference    Z. Naturforsch. 55a, 381—389 (2000); received May 29 1999 
  Published    2000 
  Keywords    Bismuth, Copper, Liquid Alloys, X-ray Diffraction, Microsegregation 
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 TEI-XML for    default:Reihe_A/55/ZNA-2000-55a-0381.pdf 
 Identifier    ZNA-2000-55a-0381 
 Volume    55 
2Author    J. Feldmann, Hk Müller-BuschbaumRequires cookie*
 Title    Kristallstrukturuntersuchung an einem bismuthaltigen Hollandit: Crystal Structure Investigation of the Bismuth Containing Hollandite: Bij 9Cu4V40 16  
 Abstract    Single crystals of B^ 9Cu4V 4O i6 have been prepared by quenching of CO2-LA SER heated samples. They were investigated by X-ray techniques. The compound^ crystallizes with tetra­ gonal symmetry, space group C4h-I 4 /w , a = 9.945(2) A, c = 2.915(3) A, Z = 1, and is isotypic to the mineral Hollandite. B^ 9Cu4V4O i6 is the first Hollandite with a statistical distribution of vanadium and copper in the network o f octahedra. Calculations of the Coulomb terms of lattice energy led to a distance o f bismuth to the lone pair of 1.07 A. Considering the lone pair as part of the coordination sphere of Bi3+ a square pyramidal polyhedron is obtained. 
  Reference    Z. Naturforsch. 50b, 1163—1166 (1995); eingegangen am 22. D ezem ber 1994 
  Published    1995 
  Keywords    Bismuth, Copper, Vanadium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1163.pdf 
 Identifier    ZNB-1995-50b-1163 
 Volume    50 
3Author    Jan-K Arel Buijink, M. Athias, Noltemeyer Und, FrankT. EdelmannRequires cookie*
 Title    Metall-N,N  
 Abstract    -bis(trimethylsilyl)benzamidinate: Synthese und Kristallstruktur von Bis[N,N-bis(trimethylsilyl)benzamidinato)chroni(II), [P hC (N SiM e3)2l2Cr Metal-N,N'-bis(trimethylsilyl)benzamidinates: Synthesis and Crystal Structure of Bis[N,N'-bis(trimethylsilyl)benzamidinato]chromium(II), [PhC(NSiM e3)2]2Cr The preparation o f N,N'-bis(trimethylsilyl)benzamidinates o f chromium, manganese, zinc and bismuth is described. The chromium(II) derivative [PhC(NSiM e3)2]2Cr (2) has been char­ acterized by an X-ray structure determination. Treatment o f CpTiCl3 with one equivalent o f N a[PhC (N SiM e3),] • 0.5 Et^O yields the mixed Cp/benzamidinate complex [PhC(NSiM e3)2]CpTiCl2 (9). 
  Reference    Z. Naturforsch. 46b, 1328—1332 (1991); eingegangen am 26. April 1991 
  Published    1991 
  Keywords    N, N'-Bis(trim ethylsilyl)benzam idinates, Chromium, Manganese, Zinc, Bismuth 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1328.pdf 
 Identifier    ZNB-1991-46b-1328 
 Volume    46