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  • Chemistry  (2)
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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Komplexe von IIB Metall-halogeniden mit N,N-Diethylbenzocarbothioamiden. Kristallstruktur von [Hg{C6H5C(S)N(C2H5)2}I2]2Verschiedene Komplexe von N,N-Diethylbenzocarbothioamide (DEBCTA) mit MX2 (M = Zn, Cd oder Hg und X = Cl, Br oder I) wurden hergestellt und mittels Elementaranalyse, Molgewichtsbestimmung, IR, 1H-NMR-Spektren und konduktometrischen Messungen untersucht. Die Kristallstruktur von [Hg(DEBCTA)I2]2 wurde mit Hilfe von Röntgenbeugungsdaten ermittelt (2402 beobachtete unabhängige Reflexe, R = 0,097). [Hg(DEBCTA)I2]2 kristallisiert monoklin in der Raumgruppe P21/n mit zwei Formeleinheiten pro Elementarzelle; Gitterkonstanten a = 1383,9(2), b = 834,3(1), c = 1 418,1(2) pm, β = 101,03(1)°. Im dimeren Komplex sind die verzerrt-tetraedrisch koordinierten Hg-Atome von je einem S-Atom des Liganden, einem terminalen I-Atom und zwei verbrückenden I-Atomen umgeben.
    Notes: Complexes having the empirical formulae M(DEBCTA)2X2 (M = Zn or Cd, X = Br or I, DEBCTA = N,N-diethylbenzenecarbothioamide), Zn(DEBCTA)Cl2, Cd2(DEBCTA)Cl4 and Hg(DEBCTA)X2 (X = Cl, Br or I) were made by reaction of zinc, cadmium or mercury dihalides in ethanol or 1,2-dichloroethane. All complexes have been characterized by elemental analysis, conductance and molecular weight measurements and by infrared and 1H-NMR spectral studies. In addition, the structure of [Hg(DEBCTA)I2]2 has been determined by single-crystal X-ray crystallography and refined to a conventional R factor of 0.097. The compound crystallizes in the monoclinic space group P21/n with a = 1383.9(2), b = 834.3(1), c = 1418.2(2) pm, β = 101.03(1)° and Z = 2. The molecule was found to have a dimeric structure involving two asymmetrical iodine bridges in which the Hg atom lies a tetrahedral environment and the ligands lie mutually trans with respect to one another.
    Additional Material: 1 Ill.
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  • 2
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Koordinationsverbindungen von Zink (II), Cadmium (II) und Quecksilber(II)-Halogeniden mit 1,8-Di-2-pyridyl-3,6-dithiactan. Kristallstruktur von Hg2(C16H20N2S2)Br4Es werden verschiedene Komplexe von 1,8-Di-2-pyridyl-3,6-dithiaoctan (bpdto) mit MX2 (M = Zn, Cd oder Hg und X = Cl, Br oder I) hergestellt und mittels Elementar-analyse, IR, 1H-NMR und konduktometrischen Messungen untersucht. Die Kristallstruktur von Hg2(bpdto)Br4 wird mit Hilfe von Röntgenbeugungsdaten ermittelt (R = 0,079). Hg2(C16H20N2S2)Br4 kristallisiert monoklin in der Raumgruppe P21/c mit vier Formeleinheiten pro Elementarzelle; Gitterkonstanten a = 14,410(3), b = 6,209(5), c = 14,478(5) Å, β = 113,98(1)°. Im Komplex sind zwei Hg-Atome verzerrt-tetraedrisch koordiniert von je einem S-Atom [Hg—S 2,670(3) Å], einem N-Atom [Hg—N 2,366(8) Å] des verbrückenden Liganden und zwei terminalen Br-Atomen [Hg—Br 2,502(1) und 2,501(2) Å].
    Notes: We describe the synthesis and characterization (by elemental analysis, conductance measurements and 1H NMR and IR spectrometry) of compounds with the general formulae M(bpdto) X2 (M = Zn, X = Cl, Br or I; M = Cd, X = Cl or Br) and M2(bpdto)X4 (M = Cd, X = I; M = Hg, X = Cl, Br or I) (bpdto = 1,8-bis(2-pyridyl)-3,6-dithiaoctane). In addition, the structure of Hg2(bpdto)Br4 was determined by single crystal structure analysis and refined to a conventional R factor of 0.079. Hg2(C16H20N2S2)Br4 crystallized in the monoclinic space group P21/c with a = 14.410(3), b = 6.209(5), c = 14.478(5) Å, β = 113.98(1)° and Z = 4. The molecule was found to have two mercury atoms, each tetrahedrally coordinated to two bromide anions [Hg—Br 2.502(1) and 2,501(2) Å], and to one nitrogen atom [Hg—N 2.366(8) Å] and one sulphur atom [Hg—S 2.670(3) Å] of the ligand molecule, which acted as a bridge between the two metal atoms.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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