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1998 (3)
1Author    Tristram Chivers, Xiaorong Li, Masood ParvezRequires cookie*
 Title    Preparation and X-Ray Structure of 3,5-Dimethyl-1,4-dichloro-1,2,6- thiadiazine-1 -oxide  
 Abstract    The title compound was obtained by the reaction of 3,5-dimethyl-2//-l,2,6-thiadiazine-l,l-dioxide with PCI5 in chloroform. It crystallizes in the monoclinic system, space group P2\/c, a = 7.521(7) A, b = 8.400(4) A, c = 13.908(4) Ä, ß = 100.35(4)°, V = 864.4(8) A3, and Z = 4. The S(VI) atom lies 0.43 A out of the plane of the 7r-delocalized NCCCN unit. The mean S-N bond distance is 1.569(3) A. 
  Reference    Z. Naturforsch. 53b, 532—534 (1998); received December 18 1997 
  Published    1998 
  Keywords    Crystal Structure, 1, 2, 6-Thiadiazines, Sulfanuric Chloride 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0532.pdf 
 Identifier    ZNB-1998-53b-0532 
 Volume    53 
2Author    Wolfgang Malisch, Klaus Grün3, Alexander Frieda, Wolfgang Reicha, Martin Schmeußer1, Udo Weis3, Christa Abd, El Baky3, Carl KrügerbRequires cookie*
 Title    Phosphenium-Komplexe, X X IX [1]  
 Abstract    [4+2]-Cycloadditionen von Phospheniumkomplexen des Typs C p (O C)2W = P R 2 (R = Alkyl, A ryl) mit 2,3-Dimethylbutadien Phosphenium Complexes, X X IX [1], [4+2]-Cycloaddition of Phosphenium Complexes of the Type Cp(OC)2W=PR2 (R = Alkyl, Aryl) with 2,3-Dimethylbutadiene The phosphenium complexes Cp(OC)2W=PR2 [R = Ph, o-Tol, Me, t-Bu, (2a -d)] react with 2,3-dimethyl-1,3-butadiene (3) via [4+21-cycloaddition to form the phosphametallacyclohexe­ nes Cp(OC)2W-PR2-CH2-CMe=CMe-CH2 (4a -d). The structure of 4a has been determined by X-ray diffraction. 
  Reference    Z. Naturforsch. 53b, 1506—1510 (1998); eingegangen am 12. Mai 1998 
  Published    1998 
  Keywords    Phosphenium Complexes, 1, 3-Dienes, [4+2]-Cycloaddition, Phosphametallacyclohexenes 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1506.pdf 
 Identifier    ZNB-1998-53b-1506 
 Volume    53 
3Author    Markus Wollenweber2, Reinhart Keese3, Helen Stoeckli-EvansbRequires cookie*
 Title    Synthesis of Spirocyclic Aminosilanes with Electron Withdrawing Substituents at Nitrogen  
 Abstract    The first synthesis of spirocyclic tetrasulfonamidosilanes is described. According to the X-Ray structure analysis of the most stable tetratosylamidosilane obtained the Silicon is bonded to four Nitrogen atoms in a spirocycle and surrounded by four Oxygen atoms which are located above the planes of the SiN4 tetrahedron. 
  Reference    Z. Naturforsch. 53b, 145—148 (1998); received October 24 1997 
  Published    1998 
  Keywords    Spirocyclic Sulfonamidosilanes, 1, 2-Phenylene Diamides, Capped Tetrahedron, X-Ray Data, Chelation 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0145.pdf 
 Identifier    ZNB-1998-53b-0145 
 Volume    53