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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 128 (1995), S. 1199-1205 
    ISSN: 0009-2940
    Keywords: Copper(I) complexes ; Copper(II) complexes ; N,S-Donor ligands ; Macrocyclic ligands ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis and characterization of seven copper coordination compounds with the 14-membered macrocyclic cis-N2S2 dibenzo ligand 6,7,13,14,15,16,17,18-octahydrodibenzo[e,m]-[1,4,8,11]dithiadiazacyclotetradecine (L1) and its N,N'-bisacetato and -bis(methylpyridyl) functionalized derivatives H2L2 and L3 are described. The structures of five compounds were determined by single-crystal X-ray diffraction. The tetrahedrally distorted square-planar coordination geometry of [CuL1](ClO4)2 (1) changes upon reduction of copper to a severely distorted tetrahedral geometry in [CuL1]Br · MeCN (2). The Cu-N bond lengths increase from 1.988(3) to 2.029(5) Å; the Cu-S bond lengths decrease from 2.293(1) to 2.255(2) Å. Copper(II) is hexacoordinated in [CuHL2]HSO4 · 2.5 H2O (5) and [CuHL2]ClO4 · H2O (6). Both compounds exhibit very similar overall structures in the cationic part. The macrocyclic ring of the ligand is folded along an N⃜S axis, the octahedral geometry is strongly Jahn-Teller distorted, with O and S donor atoms in the apical positions. Compound 5 contains one very short [2.271(3) Å] and one long [2.701(3) Å] Cu-S (thioether) bond. In [CuL3](ClO4)2 · 2 H2O (7) one thioether group of the ligand L3 remains uncoordinated. The coordination polyhedron is rather irregular: Cu-S 2.506(3) and Cu-N 1.960(7)-2.107(8) Å. The compounds were further characterized by electronic and EPR spectroscopy and by cyclic voltammetry. Some relationships to the structural and spectroscopic properties of “blue” copper proteins were found.
    Additional Material: 5 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 72-76 
    ISSN: 0044-2313
    Keywords: Dithiocarbamate complexes of cobalt and copper ; preparation ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Deprotonated Dithiocarbamic Acid Esters as Thiolate S-Donor Ligands. Structures of Ph(H)NC(S)SMe, Co(PhNC(S)SMe)3, and Cu6(PhNC(S)SMe)6The reaction of N-phenyl-S-methyldithiocarbamate, PhN(H)C(=S)SMe, (1) with cobalt(II) and copper(II) salts yields the monomeric compound CoIII(PhNC(S)SMe)3 (2) and the hexameric compound Cu6I(PhNC(S)SMe)6 (3). These complexes contain the negatively charged imino-thiolate ligand PhN=C(—S)SMe, which has been formed by deprotonation of 1. The crystal structures of 1-3 have been determined. 1 forms centrosymmetrical dimers through N—H … S bridge bonds, the conformation in the solid state and in solution is Z,E′. CoIII shows in 2 a trigonal-antiprismatic coordination, with the ligands acting as N,S-chelates. 3 contains an octahedral Cu6-core with Cu … Cu-distances ranging from 276.3(5) to 305.7(4) pm. Each copper center is trigonally coordinated to one nitrogen and two sulfur atoms of three different ligands.Crystal data: 1, triclinic, space group P1, a = 590.5(6), b = 869.0(1), c = 968.5(9) pm, α = 67.29(8), β = 78.44(8), γ = 81.64(9)°, Z = 2, 1 775 reflections, R(Rw) = 0.0317(0.032). 2, orthorhombic, space group Pbca, a = 978.0(2), b = 1 842.9(4), c = 3 059.7(6) pm, Z = 8, 1 129 reflections, R(Rw) = 0.0997(0.0886). 3, monoclinic, space group P21/c, a = 1 363.1(3), b = 1 342.8(3), c = 1 671.9(3) pm, β = 103.48°, Z = 2, 1 374 reflections, R(Rw) = 0.0708(0.0617).
    Notes: Die Reaktion von N-Phenyl-S-methyl-dithiocarbaminsäureester, PhN(H)C(=S)SMe (1) mit Cobalt- und Kupfersalzen ergibt monomeres CoIII(PhNC(S)SMe)3 (2) und hexameres Cu6I(PhNC(S)SMe)6 (3). 2 und 3 enthalten den aus 1 durch Deprotonierung entstandenen anionischen Liganden PhN=C(—S)SMe. Die Kristallstrukturen von 1-3 wurden ermittelt. 1 bildet über N—H … S-Brückenbindungen zentrosymmetrische Dimere und liegt im festen Zustand und auch in Lösung als Z,E′-Konformer vor. Die Koordinationssphäre von 2 ist trigonal-antiprismatisch; die Liganden sind als N,S-Chelat gebunden, mit facialer Anordnung gleichartiger Donorzentren. 3 enthält als Kern eine verzerrt oktaedrische Cu6-Einheit mit Cu … Cu-Abständen von 276,3(5) bis 305,7(4) pm. Jedes Kupferatom ist von zwei Schwefelatomen und einem Stickstoffatom dreier verschiedener Liganden koordiniert. Die Schwefelatome haben verbrückende Funktion.Kristalldaten: 1, triklin, Raumgruppe P1, a = 590,5(6), b = 869,0(1), c = 968,5(9) pm, α = 67,29(8), β = 78,44(8), γ = 81,64(9)°, Z = 2, 1 775 Reflexe, R(Rw) = 0,0317(0,032). 2, orthorhombisch, Raumgruppe Pbca, a = 978,0(2), b = 1842,9(4), c = 3 059,7(6) pm, Z = 8, 1 129 Reflexe, R(Rw) = 0,0997(0,0886). 3, monoklin, Raumgruppe P21/c, a = 1 363,1(3), b = 1 342,8(3), c = 1 671,9(3) pm, β = 103,48°, Z = 2, 1 374 Reflexe, R(Rw) = 0,0708(0,0617).
    Additional Material: 3 Ill.
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  • 3
    ISSN: 0044-2313
    Keywords: Fluoro antimonates(III) ; protonated azacrownethers ; host-guest complexes ; crystal structures ; Mößbauer spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Anionic Antimony(III) Fluoro Complexes with protonated Azacrownethers as Counterions. Crystal Structures and Mößbauer Spectra of [H2cyclam]2[Sb4F16] · 2H2O, [H4cyclam][Sb2F10] · 2 HF, and [H4(tetramethyl)cyclam]2[Sb4F15][HF2][F]4 (cyclam = 1,4,7,11-Tetraazacyclotetradecane)The title compounds are formed by reaction of SbF3 with the respective azacrownether. [H2cyclam]2[Sb4F16] · 2 H2O contains tetrameric anions which weakly associate to chains. The [H2cyclam]2+ ions possess an unusual conformation due to intramolecular hydrogen bonds. [H4cyclam][Sb2F10] · 2HF contains the dimeric hitherto unknown [Sb2F10]4- ion; two HF molecules are attached to it by hydrogen bonds. The structure of [H4(tetramethyl)cyclam]2[Sb4F15][HF2][F]4 is made up of the two dimensional polymeric [HSb4F17]4- anion. The tetra-protonated tetramethylcyclam ions form host-guest complexes with fluoride ions.
    Notes: Die Titelverbindungen entstehen durch Reaktion von SbF3 mit dem betreffenden Azakronenether. [H2cyclam]2[Sb4F16] · 2H2O enthält tetramere, schwach assoziierte [Sb4F16]4--Anionen. Die Kationen [H2cyclam]2+ liegen infolge intramolekularer H-Brückenbindungen in einer ungewöhnlichen Konformation vor. [H4cyclam][Sb2F10] · 2 HF enthält das dimere [Sb2F10]4--Ion, an das zwei HF-Moleküle gebunden sind. In [H4(tetramethyl)cyclam]2[Sb4F15][HF2][F]4 liegt ein zweidimensional polymeres Anion der Formel [HSb4F17]4- vor. Fluoridionen und protonierte Azakronenether bilden Wirts-Gast-Komplexe.
    Additional Material: 7 Ill.
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