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'Potassium' in keywords Facet   Publication Year 1994  [X]
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1994[X]
1Author    Z. NaturforschRequires cookie*
 Title    NaK9Tl13: Eine neue Verbindung an der Zintl-Grenze mit isolierten, von Thallium besetzten Tl17-Ikosaedern  
 Abstract    NaK9T l13 (a = 1152.0(1) pm, Im 3, Z = 1, RI -0.029, wR2 = 0.0724) has been prepared from the elements and characterized by single crystal X-ray diffraction. The title compound contains isolated T l12 icosahedra, which are centered by T1 atoms. The icosahedra are in an a-W-type arrangement. 
  Reference    Z. Naturforsch. 49b, 935 (1994); eingegangen am 14. Februar 1994 
  Published    1994 
  Keywords    Crystal Structure, Intermetallic Compound, Sodium, Potassium, Thallium 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0935.pdf 
 Identifier    ZNB-1994-49b-0935 
 Volume    49 
2Author    F.-D Martin, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis von K4CuV50 15C1 On K4 CuV5 0 1 5 C1  
 Abstract    Single crystals of K4CuV50 15C1 were prepared by crystallization from the melt. The yellow brown crystals show tetragonal symmetry, space group C 4-P 4, a = 8.8690, c = 5.4196 A , Z = 1. K4CuV50 15C1 is strongly related to KBaCuV20 7Cl and K2V 30 8. V (l) shows V 20 7 double tetrahedra connected by square V 0 5 and C u 0 4Cl pyramids. The crystal structure is discussed with respect to the related compounds. 
  Reference    Z. Naturforsch. 49b, 1459—1462 (1994); eingegangen am 9. Juni 1994 
  Published    1994 
  Keywords    Potassium, Copper, Vanadium Oxide-Chloride, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1459.pdf 
 Identifier    ZNB-1994-49b-1459 
 Volume    49 
3Author    D. Frerichs, Hk Müller-BuschbaumRequires cookie*
 Title    Ein Beitrag zur Kristallchemie von Verbindungen mit Johillerit-Struktur: On the Crystal Chemistry of Compounds with Johillerite Structure: KCo3 Cu(As2 5 8 V0 4 2 )O i2  
 Abstract    Single crystals of KCo3Cu(As2.58Vo42) 0 12 were prepared by solid state reactions below the melting point of the reaction mixture (K 2C 0 3, CuO, CoC20 4, V 20 5 and 3 A s20 5 -5 H 20) . It crystallizes with m onoclinic symmetry, space group C |h-C 2 lc, a = 12.207, b = 12.730, c = 6.811 A , ß = 113.69°, Z -4. The structure type is characterized by isolated twisted-square C u 0 4-polygons, C o 0 6-octahedra and a special 4+4-coordination o f the potassium ion. A s5+ and V*+ are in tetrahedral coordination with a partly statistical distribution of these ions. 
  Reference    Z. Naturforsch. 49b, 1463—1466 (1994); eingegangen am 13. Juni 1994 
  Published    1994 
  Keywords    Potassium, Cobalt, Arsenic, Vanadium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1463.pdf 
 Identifier    ZNB-1994-49b-1463 
 Volume    49 
4Author    Holger Szillat, Hanskarl Müller-BuschbaumRequires cookie*
 Title    Synthese und Kristallstruktur von KCuHo2Mo40 16 Synthesis and Crystal Structure of K C uH o2M o40 I6  
 Abstract    Single crystals o f K C uH o2M o40 16 have been prepared by recrystallisation from melts and investigated by X-ray diffractometer techniques. The compound crystallizes with m onoclinic symmetry, space group C 2/c, a = 521.6(1), b = 1251.3(2), c = 1953.1(2) pm, ß = 92.903(18)°, Z -4. K C uH o2M o40 16 represents a new structure type characterized by H oO s and alternate CuO6/K O 10 polyhedra chains. The connection o f these polyhedra chains to each other and by M o 0 4 tetrahedra is described and the crystal structure discussed with respect to related com ­ pounds o f the C uLnM o2Os and K L nM o20 8 types. 
  Reference    Z. Naturforsch. 49b, 350 (1994); eingegangen am 10. Dezember 1993 
  Published    1994 
  Keywords    Crystal Structure, Copper, H olm ium, M olybdenum, Potassium 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0350.pdf 
 Identifier    ZNB-1994-49b-0350 
 Volume    49