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'Potassium' in keywords Facet   Publication Year 1996  [X]
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1996[X]
1Author    Silke Busche, K. Arsten BluhmRequires cookie*
 Title    Ba2KZn3(B306)(B60 13)  
 Abstract    Single crystals of the new compound Ba2KZn3(B30 6)(B60 | 3) were obtained by using a B20 3 flux technique; they crystallize in an as yet unknown structure type. X-ray investigations led to the space group C '-P l (Nr.2) with lattice parameters a = 705.2(2), b = 712.5(2), c = 1880.3(6), a = 93.43(3)°, ß = 90.72(2)°, 7 = 119.57(2)°, Z = 2. The structure contains (B30 6)3~-rings and a new discrete (B60 13)8~ anion, which is composed of two B 0 4 and two B20 5 units. Zn-+ is tetrahedrally coordinated by oxygen and two out of three tenfold coordinated Ba-sites are statistically occupied by Ba2+ and K+. 
  Reference    Z. Naturforsch. 51b, 319—324 (1996); eingegangen am 26. September 1995 
  Published    1996 
  Keywords    Barium, Potassium, Zinc, Borate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0319.pdf 
 Identifier    ZNB-1996-51b-0319 
 Volume    51 
2Author    O. Schrandt, Hk Müller-BuschbaumRequires cookie*
 Title    K + auf einer mit C a2+ unterbesetzten Punktlage in Ca3( V 0 4) 2: Ein Beitrag über K C a 10V 7O 28 K + at an D eficient Ca2+ Point Position in C a3( V 0 4) 2: On K C a 10V 7O 28  
 Abstract    Single crystals o f K C a ^ V y O ,« have been prepared by crystallization from flux. The yellow-green crystals show rhombohedral symmetry (trigonal space group C3V-R3c, a = 10.830(1), c = 37.860(1) A , Z = 6). The differences o f the crystal chemistry are discussed with respect to the isotypic compound Ca3(V 0 4) 2. K + replaces exclusively Ca2+ ions at one deficient point position. 
  Reference    Z. Naturforsch. 51b, 473—476 (1996); eingegangen am 16. Oktober 1995 
  Published    1996 
  Keywords    Potassium, Calcium, Vanadium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0473.pdf 
 Identifier    ZNB-1996-51b-0473 
 Volume    51 
3Author    O. Schrandt, Hk Müller-BuschbaumRequires cookie*
 Title    Geordnete Metallverteilung in K B a V 0 4 und K S rV 0 4 mit /?-K2S 0 4-Struktur Ordered Metal Distribution in K B a V 0 4 and K S r V 0 4 Showing p -K 2S 0 4 Structure  
 Abstract    Single crystals of K B a V 0 4 (I) and K S rV 0 4 (I I) have been prepared by crystallization from V 20 5 flux. The yellowish crystals show orthorhombic symmetry, space group D'^-Pnma with (I): a = 7.774(2), b = 5.899(1), c = 10.375(2) A , (II): a = 7.400(2), b = 5.812(1), c -9.961(1), Z = 4. Both compounds show an ordered distribution o f K + and Ba2+ and Sr2+ respectively. The different sizes of the K 0 1() and BaOy (S r 0 9) polyhedra are discussed with respect to those of the /3-K2S 0 4 structure, considering the calculations o f the Coulomb terms of lattice energy. 
  Reference    Z. Naturforsch. 51b, 477—480 (1996); eingegangen am 5. September 1995 
  Published    1996 
  Keywords    Potassium, Strontium Barium, Vanadium Oxid, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0477.pdf 
 Identifier    ZNB-1996-51b-0477 
 Volume    51