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'strontium' in keywords Facet   section ZfN Section B:Volume 050  [X]
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1995 (3)
1Author    J. Feldmann, Hk Miiller-BuschbaumRequires cookie*
 Title    Kristallstrukturuntersuchung an einem Strontium-Vanadyl-Vanadat: Sr2(V 0 )V 20 8 Crystal Structure Investigation of the Strontium Vanadyl-Vanadate: Sr2( V 0 ) V 20 8  
 Abstract    Single crystals of Sr2(V 0)V 20 8 have been prepared by quenching melts from higher tem­ peratures. This compound represents a new structure type and crystallizes with monoclinic symmetry, space group C |h-I 2 la, a = 6.929, b = 16.246, c = 7.260 A, ß = 115.82°, Z = 4. The point positions occupied by V5+ show tetrahedral coordination. The refinement of the V4+ position led to split positions with acentric orientations of V4+ in the octahedral O2-surrounding. It results in a square pyramidal coordination with one short V -O distance typically for vanadyl groups. 
  Reference    (Z. Naturforsch. 50b, 43—46 [1995]; eingegangen am 8. Juli 1994) 
  Published    1995 
  Keywords    Strontium, Vanadium Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0043.pdf 
 Identifier    ZNB-1995-50b-0043 
 Volume    50 
2Author    M. Atthias Westerhausen, Wolfgang SchwarzRequires cookie*
 Title    Tetrakis(tetrahydrofuran-0)calcium-und -strontium-bis[bis(trimethylsilyl)- arsanid] -Vergleich der spektroskopischen Parameter sowie der Molekülstrukturen Tetrakis(tetrahydrofuran-0)calcium and Strontium Bis[bis(trimethylsilyl)- arsanide] -A Comparison of the Spectroscopic Param eters and the Molecular Structures  
 Abstract    Calcium-and strontium bis[bis(trimethylsilyl)amide] react with bis(trimethylsilyl)arsane in tetrahydrofuran to give the corresponding tetrakis(tetrahydrofuran-O) metal bis[bis(trime-thylsilyl)arsanides]. The calcium derivative crystallizes in the triclinic space group P I with a = 1191.7(2), b = 1232.0(2), c = 1655.0(2) pm, a = 102.46(1)°, ß = 107.92(1)°, y = 104.66(1)° and Z = 2, the strontium derivative in the orthorhombic space group Pbca with a = 2153.4(3), b = 1852.2(3), c -2182.4(3) pm and Z = 8. Both m olecules exist as frans-isomers with a nearly linear A s -M -A s moiety; however, the strontium analogue contains two remarkably different configurations for the arsenic atoms. One A s atom is surrounded nearly trigonally planar with a S r -A s bond length of 310 pm, whereas the other pnictogen atom has an angle sum of 338° with a S r -A s distance of 315 pm. 
  Reference    (Z. Naturforsch. 50b, 106 [1995]; eingegangen am 2. August 1994) 
  Published    1995 
  Keywords    Arsanide, Bis(trimethylsilyl)arsanide, Calcium, Strontium, NM R Spectra 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0106.pdf 
 Identifier    ZNB-1995-50b-0106 
 Volume    50 
3Author    S. Frenzen, Hk Müller-BuschbaumRequires cookie*
 Title    Uber das gemischte Alkali-Erdalkalimetall-Oxoruthenat NaSr3R u 0 6 The Mixed Alkaline Alkaline E arth O xoruthenate NaSr3R u 0 6  
 Abstract    Single crystals of NaSr3R u 0 6 have been prepared in closed silver tubes and investigated by X-ray techniques^ This compound crystallizes with trigonal (rhombohedral) symmetry, space group Ö3d-R 3 c , a = 9.6069(8), c = 11.513(2) A, Z = 6, and is isotypic to compounds of the Sr4P t 0 6 type. The crystal structure is discussed with respect to related compounds with partial replacement o f alkaline earth elem ents by sodium and copper. 
  Reference    Z. Naturforsch. 50b, 581 (1995); eingegangen am 4. Oktober 1994 
  Published    1995 
  Keywords    Sodium, Strontium, Ruthenium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0581.pdf 
 Identifier    ZNB-1995-50b-0581 
 Volume    50