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'Pyroborate' in keywords Facet   Publication Year 1995  [X]
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1995[X]
1Author    Sabine Münchau, Karsten BluhmRequires cookie*
 Title    Zur Synthese und Kristallstruktur von Kupfercadmiumpyroboratoxid: Cu2Cd(B20 5) 0 Synthesis and Crystal Structure of Copper Cadmium Pyroborate Oxide: Cu2Cd(B20 5) 0  
 Abstract    Single crystals of the new compound Cu2C d(B20 5) 0 have been prepared by B 20 3/V 20 5 flux technique in a closed silver tube. Their structure is isotypic with Cu2C o(B 20 5) 0 but its preparation is quite different. X-ray investigations on single crystals led to the space group C |h-P 2 !/c (Nr. 14), a = 339.9(2); b = 1509.8(2); c -927,0(1) pm; ß = 93.19(1)°; Z -4. The structure contains isolated B 2O s groups and oxygen that is not coordinated to boron. Cad­ mium is octahedrally coordinated by oxygen, while copper exhibits a nearly square planar or a fivefold pyramidal coordination. 
  Reference    Z. Naturforsch. 50b, 1151 (1995); eingegangen am 19. Januar 1995 
  Published    1995 
  Keywords    Copper, Cadmium, Pyroborate, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1151.pdf 
 Identifier    ZNB-1995-50b-1151 
 Volume    50 
2Author    N., Silke Busche, Karsten BluhmRequires cookie*
 Title    Synthese und Kristallstruktur der ersten zinkhaltigen Pyroborate  
 Abstract    ii,5Z n 0,5(6 2 0 5) UI,d C o ^ Z n o ^ I ^ O s) Synthesis and Crystal Structure of the First Zinc Containing Pyroborates Nii.5Z n0.5(B2O 5) and Coj 5Z n0.5(B2O 5) The first zinc containing pyroborates Ni! sZ n ^ B ^ O s) (A) and 5Zn0 5(B 2O 5) (B) were prepared by using a B20 3 flux technique. Single crystals were investigated by X-ray diffrac­ tion and showed triclinic symmetry, space group C j-P l. The structures are isotypic to C o9(B 20 5) with the lattice parameters (A) « = 331.28(6), 6 = 613.87(11), c = 922.2(2), a = 104.067(11) °, ß = 90.672(13) °, y = 92.413(12) 0 and (B) 0 = 315.89(2), 6 = 612.84(6), c = 927.72(6), a = 104.103(7) °, ß = 91.020(6) °, y = 92.540(7) °, Z = 2. All metal point positions show an octahedral oxygen coordination and a partly statistical distribution o f Zn2+ and N i2+ or C o2+, respectively. Isolated nearly planar B20 5 units connect ribbons consisting o f edge sharing metal octahedra. 
  Reference    Z. Naturforsch. 50b, 1445—1449 (1995); eingegangen am 25. April 1995 
  Published    1995 
  Keywords    Zinc, Nickel, Cobalt, Pyroborate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1445.pdf 
 Identifier    ZNB-1995-50b-1445 
 Volume    50 
3Author    Karsten Busche, BluhmRequires cookie*
 Title    Silke  
 Abstract    The compound Cu2 Z n(B 2 0 s) 0 was prepared by using a B 2 0 3 flux technique, and single crystals were investigated by X-ray diffraction (monoclinic symmetry, space group C2 h-P 2 i/c). The structure is isotypic to Cu2 C o(B 2 0 5) 0 with lattice parameters a = 327.38(2), b = 1479.4(3), c = 915.39(13), ß = 95.794(11)°, Z = 4, but with the significant difference that zinc is penta-coordinated by oxygen. Copper exhibits a nearly square planar or a square pyramidal coordi­ nation, respectively. The structure contains isolated B2 0 ? units and oxygen which is not coordinated to boron. Zur Synthese und Kristallstruktur von Kupferzinkpyroboratoxid Cu2Zn(B20 5) 0 
  Reference    Z. Naturforsch. 50b, 1854—1858 (1995); eingegangen am 17. Mai 1995 
  Published    1995 
  Keywords    Copper, Zinc, Pyroborate, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1854.pdf 
 Identifier    ZNB-1995-50b-1854 
 Volume    50