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1995 (1)
1Author    Silke Busche, Karsten BluhmRequires cookie*
 Title    Zur Synthese und Kristallstruktur von Zinkboratoxiden mit isolierten, trigonal planaren B 0 3-Baugruppen: Zn5M n(B03)20 4 und Z nF e(B 03) 0 Synthesis and Crystal Structure of Zinc Borate Oxides Containing Isolated Trigonal Planar B 0 3 Units: Z n5M n (B 0 3)20 4 and Z n F e(B 0 3) 0  
 Abstract    Single crystals of the new compounds Zn5M n (B 0 3)20 4 (A) and Z n F e (B 0 3) 0 (B) were prepared by using a B20 3 flux technique. Zn5M n (B 0 3)20 4 is isostructural with Ni5T i(B 0 3)20 4 and Z n F e (B 0 3) 0 is isotypic with the mineral warwickite. X-ray investiga­ tions on single crystals led to (A) space group D ^ -P b a m , a = 926.41(10), b = 1236.67(8), c = 304.55(3) pm, Z = 2, and (B) space group D i^ -P n m a, a = 924.62(4), b = 314.1(10), c = 935.3(2) pm, Z = 4. The structure o f Zn5M n (B 0 3)20 4 (A) contains four octahedrally coordi­ nated metal sites, one of these statistically occupied by Zn2+ and Mn4+. In the structure o f Z n F e (B 0 3) 0 the ions Zn2+ and Fe3+ occupy statistically both distorted octahedral sites. Both structures contain isolated B 0 3 units and oxygen that is not coordinated to boron. 
  Reference    Z. Naturforsch. 50b, 1450—1454 (1995); eingegangen am 25. April 1995 
  Published    1995 
  Keywords    Zinc, Manganese, Iron Borate Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1450.pdf 
 Identifier    ZNB-1995-50b-1450 
 Volume    50