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1Author    Christian Robl, Stephanie HentschelRequires cookie*
 Title    Zur Kenntnis von Be[C2(C O O )2] * 4 H20 - Ein durch starke Wasserstoffbrückenbindungen stabilisiertes anorganisches Derivat der Acetylendicarbonsäure On Be[C2(COO)2]-4 H 20 -An Inorganic Derivative of Acetylenedicarboxylic Acid Stabilized by Strong Hydrogen Bonding  
 Abstract    Colorless orthorhombic single crystals o f Be[C2(COO)2] • 4 H 20 were grown in aqueous silica gel. Space group Cmcm, a = 1004.7(1), b = 675.0(1), c = 1262.4(2) pm, Rg = 0.0264. The crys­ tal structure consists o f Be(H20)^+ tetrahedra and planar [C2(COO)2]2' anions linked together by strong asymmetric hydrogen bonds. A layer-like arrangement extending parallel (010) made up by [C2(COO)2]2~ anions and hydrogen bound water m olecules o f the Be(H20)^ + tetra­ hedra is the primary structural feature o f Be[C,(COO)2] -4 H 20 . These layers are stacked and interlinked by coordinative bonds between Be^+ and H 20 to yield a rigid three-dimensional framework. Thermal decom position com m ences with endotherm ic loss o f water o f crystallisa­ tion at 160 °C followed by several steps o f exothermic degradation yielding finally a soot-like am orphous residue. 
  Reference    Z. Naturforsch. 45b, 1499—1502 (1990); eingegangen am 3. Mai 1990 
  Published    1990 
  Keywords    Beryllium Acetylenedicarboxylate, X -R ay Structure, Thermal Analysis, Hydrogen Bonding 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1499.pdf 
 Identifier    ZNB-1990-45b-1499 
 Volume    45 
2Author    Peter KlüfersRequires cookie*
 Title    Die Kristall-und Molekülstrukturen der  
 Abstract    Verbindungen [Cl4_xSn{C o(C O)4}xl mit x = 1 ,2 und 3 The Crystal and M olecular Structures of the Compounds [Cl4_vSn{Co(CO)4} v] with x = 1,2 and 3 The crystal structures o f the com pounds [Cl3SnCo(CO)4] 1, [Cl2Sn{C o(C O)4} 2] 2, and [C lSn{C o(C O)4}3] 3, have been determined by X-ray crystallography. Sn is co-ordinated 
  Reference    Z. Naturforsch. 46b, 187—191 (1991); eingegangen am 16. Juli 1990 
  Published    1991 
  Keywords    Tetracarbonylcobaltio-chloro-stannanes, Tin, Cobalt, Carbonyl, X -R ay Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-0187.pdf 
 Identifier    ZNB-1991-46b-0187 
 Volume    46 
3Author    Dieter Sellmann, Helmut Schillinger, Falk KnochRequires cookie*
 Title      
 Abstract    Säure-Base-und Redox-Reaktionen von [Ni('MeS2')2l mit H +, PM e3, N O + und NO . Röntgenstrukturanalyse von [Ni(PM e3)('M eS2')2l ('M eS2'~ = o-(M ethylthio)thiophenolat(l-)) Transition-M etal Complexes with Sulfur Ligands, LXXXVI*. Acid-Base and Redox Reactions of [Ni('MeS2')2] with H +, PM e3, N O + and NO. X-Ray Structure Determ ination of [Ni(PMe3)('MeS2')2] ('MeS2' -= o-(m ethylthio)thiophenolate(l-)) In order to elucidate specific properties o f nickel-sulfur com plexes, addition and substitu­ tion reactions o f [Ni('M eS2')2] (1) were investigated. 1 is rapidly hydrolyzed by aqueous HC1 yielding 'M eS2' -H and N i(II) ions. 1 coordinates phosphines as coligands, thioether donors decoordinate, however, simultaneously. The m onophosphine com plex [N i(PM e3)('M eS2')2] (2) was characterized by X-ray structure determination. It contains a square-planar N iS 3P unit and one decoordinated thioether group. Redox reactions o f 1 occur with N O + and N O , yield­ ing the binuclear nitrosyl complexes cis-and //-a/?s-[Ni(NO)('MeS-,')]2 (3) and the disulfide ['MeS2']2. 
  Reference    Z. Naturforsch. 47b, 748 (1992); eingegangen am 27. Novem ber 1991 
  Published    1992 
  Keywords    Nickel-Sulfur Complexes, Nitrosyl, Phosphine Ligands, X -R ay Structure 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0748.pdf 
 Identifier    ZNB-1992-47b-0748 
 Volume    47