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2000 (1)
1995 (1)
1Author    A.Rnd Müller, Gerald Henkel, ThiolatoRequires cookie*
 Title    [Ni2(SC4H9)6]2-> ein neuartiger zweikerniger Nickel-Thiolato-Komplex mit kantenverknüpften NiS4-Tetraedern und [Ni(SC6H4SiMe3)4]2-, ein strukturchemisch verwandtes einkerniges Komplexion [Ni2(SC4H 9)6]2~, a Novel Binuclear Nickel-Thiolat Complex with NiS4 Tetrahedra Sharing Edges and [Ni(SC6H4SiMe3)4]2_, a Structurally Related M ononuclear Complex Ion  
 Abstract    Reaction of nickel(II) chloride with sodium or potassium tert-butane thiolate in acetonitrile affords the isotypical compounds [Nb(SrC4H9)6]Na2 • 4 MeCN (1) and [Ni7(SfC4H9)6]KT • 4 MeCN (2), respectively. Crystal data: 1: a = 9.859(3), b = 11.877(3), c = 19.675(5) Ä , ß = 96.11(2)°, space group P 2x/n, Z = 2:2: a = 9.854(2), b = 11.915(3), c = 20.558(5) Ä , ß = 99.62(2)°, space group P 2xln, Z = 2. The structures were refined to R = 0.0599 (1) and 0.0562 (2), respectively. Both compounds contain the complex ion [Ni2(SrC4H 9)6]2_ (3), which is not only the first example of a tetrahedral nickel complex with alkane thiolate ligands, but also the first poly-nuclear nickel complex containing tetrahedral NiS4-units sharing a comm on edge. Reaction of nickel(II) chloride and sodium (2-trim ethylsilyl)thiophenolate in acetonitrile leads to [Ni(SC6H4SiM e3)4]2~ (5) with tetrahedral stereochemistry. The m ononuclear complex ion is isolated aso [Ph4P]2[Ni(SC6H4SiM e3)4]-5M eC N (4) with a = 13.771(2), b = 14.163(2), c = 25.873(4) A , a = 77.44(1), ß = 75.13(1), y = 72.46(1)°, space group P 1 and Z = 2. The final refinement converged to R = 0.0445. 
  Reference    Z. Naturforsch. 50b, 1464—1468 (1995); eingegangen am 29. Dezem ber 1994 
  Published    1995 
  Keywords    Ligands, Nickel Complexes, Synthesis, Crystal Structure, Bioinorganic Chemistry 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1464.pdf 
 Identifier    ZNB-1995-50b-1464 
 Volume    50 
2Author    M. Ichaela, W. Ilhelm, W. Olfgang Saak, H. Enry StrasdeitRequires cookie*
 Title    Phenylmercury Chloride: Its Single-Crystal X-Ray Structure and Some Aspects of its Biological Chemistry  
 Abstract    A single crystal of phenylmercury chloride (PhHgCl) was obtained by serendipity from a solution of diphenylmercury (HgPh2) and dihydrolipoic acid in tetrahydrofuran / carbon tetrachloride. The crystal structure of PhHgCl is pseudotetragonal. It is best described in the orthorhombic space group Cmma with a = 6.856(1), b = 6.882(1), c = 14.309(2) A (at 193 K), and Z = 4. The Cl-Hg-C moiety of the PhHgCl moleculeois exactly linear. The bond lengths at the Hg atom are Hg-Cl 2.345(2) and Hg-C 2.044(9) Ä. In the crystal, the molecules are arranged in double layers parallel to the a,b plane. In a model medium for the gastric juice (0.1 M DC1 in D 20 / [Dg]dioxan, 37 °C), HgPh2 reacts to form PhHgCl. HgCl2, which would result from complete dearylation, cannot be isolated from the reaction mixture. However, it appears that a small equilibrium concentration of HgCl2 may be present, because on addition of 1,4,7-trithiacyclononane (ttcn) and diethyl ether, the dichloride can be trapped as solid [Hg(ttcn)2][HgCl4]. We estimate that after oral uptake of HgPh2 20 -90% are transformed into PhHgCl in the stomach after 30 min. In tro d u ctio n 
  Reference    (Z. Naturforsch. 55b, 35—38 [2000]; received October 18 1999) 
  Published    2000 
  Keywords    Acidolysis, Bioinorganic Chemistry, Crystal Structure, Mercury, Organomercury Compounds 
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 TEI-XML for    default:Reihe_B/55/ZNB-2000-55b-0035.pdf 
 Identifier    ZNB-2000-55b-0035 
 Volume    55