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  • chalcogens  (2)
  • Copper antimony selenide  (1)
  • Hydrogen bonds  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Coordination Modes of 2,5-Di(tert-butyl)pyrrolide - Crystal Structures of HPyr*, Pyr*H·thf, (thf)2LiPyr*, and [(Me3Si)3C-Zn]2(μ-Cl)(μ-Pyr*) (Pyr* = 2,5-tBu2NC4H2) (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 1175-1182 
    Details
    ISSN: 1434-1948
    Keywords: Hydrogen bonds ; Indium ; Lithium ; Nitrogen heterocycles ; Zinc ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The lithiation of 2,5-di(tert-butyl)pyrrole (1) yields bis(tetrahydrofuran)lithium 2,5-di(tert-butyl)pyrrolide (2), which is monomeric in solution as well as in the solid state. Due to the coordination number of three for the lithium atom, short Li-O and Li-N bond lengths of 193 pm are observed. The metathesis reaction of 2 with tris(trimethylsilyl)-methylzinc chloride (3) gives colorless bis[tris(trimethyl-silyl)methylzinc] chloride 2,5-di(tert-butyl)pyrrolide (4). The pyrrolide ligand and the chlorine atom bridge the zinc atoms. One of the zinc atoms is bonded to the nitrogen atom of the pyrrolide substituent, while the other bonds to the opposite C-C bond. At 215 pm, the Zn-N bond is very long compared to those in alkylzinc amides, whereas the Zn-C distances lie in the range of Zn-C bond lengths found between zinc and η5-bonded cyclopentadienide ligands. The molecular structures of 1 and of the low-melting THF adduct 1·thf show a similar 2,5-di(tert-butyl)pyrrole molecule, but in the latter case a weak N-H···O bond is observed (N-H 97 pm, O···H 199 pm).
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    (CuI)2Cu3SbS3: Copper Iodide as Solid Solvent for Thiometalate ionsDedicated to Professor Hans Georg von Schnering (1997)
    Weinheim : Wiley-Blackwell
    Chemistry - A European Journal 3 (1997), S. 2032-2038 
    Details
    ISSN: 0947-6539
    Keywords: antimony ; chalcogens ; copper ; iodine ; solid-state structures ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: (CuI)2Cu3SbS3 was prepared by solid-state reaction of stoichiometric amounts of CuI, Cu, S, and Sb. The crystal structure was determined from single crystals at room temperature and - 80°C. Red-orange (CuI)2Cu3SbS3 crystallizes in the orthorhombic system, space group Pnnm (no. 58) with a = 10.488(2), b = 12.619(2), c = 7.316(1) Å, V = 968.2(2) Å3 (20°C), and Z = 4. The distribution of the copper atoms was refined by using a Gram-Charlier nonharmonic development of their atomic displacement parameters, which indicated an increasing dynamic disorder from -80°C to 20°C. Raman spectra of (CuI)2Cu3SbS3 are dominated by strong bands for [SbS3]3- units at 362 and 338 cm-1. The compound melts at 492°C (DTA, onset). Conductivity measurements reveal high ionic conductivity (6.2 × 10-5ω-1 cm-1 at 50°C, 2.9 × 10-3 ω-1 cm-1 at 200°C) with an activation energy of 0.35 eV (40-275°C).
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chem.19970031218
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  • 3
    Electronic Resource
    Electronic Resource
    Cu3SbSe3: Synthese und Kristallstruktur (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 685-688 
    Details
    ISSN: 0044-2313
    Keywords: Copper antimony selenide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Crystal Structure of Cu3SbSe3The hitherto unknown crystal structure of Cu3SbSe3 has been determined from single crystals. The compound crystallizes in the orthorhombic system, space group Pnma (No. 62), with a = 7.9865(8), b = 10.6138(9) and c = 6.8372(7) Å, V = 579.6(1) Å3, Z = 4. Most remarkable feature of the structure are groups of three cis-edge-sharing tetrahedra [Cu3Se8] which are interlinked to a threedimensional arrangement by SbSe3-units. In contrast to Cu3SbS3 in the temperature range from -180 to 25°C no hints for a phase transition could be detected by means of X-ray- and thermoanalytical methods.
    Notes: Die bisher unbekannte Kristallstruktur von Cu3SbSe3 wurde aus Einkristalldaten ermittelt. Die Verbindung kristallisiert orthorhombisch, RG Pnma (Nr. 62) mit a = 7,9865(8), b = 10,6138(9) und c = 6,8372(7) Å, V = 579.6(1) Å3, Z = 4. Die Struktur zeichnet sich durch Baugruppen [Cu3Se8] aus drei cis-kantenverknüpften Tetraedern aus, die über ihre Liganden mit SbSe3-Gruppen zu einem dreidimensionalen Netzwerk verknüpft sind. Im Gegensatz zu Cu3SbS3 konnten Hinweise auf eine Phasenumwandlung im Temperaturbereich von -180 bis 25°C weder durch röntgenographische noch durch thermoanalytische Untersuchungen gefunden werden.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210431
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  • 4
    Electronic Resource
    Electronic Resource
    (CuI)3Cu2TeS3: Layers of Cu2TeS3 in Copper(I) IodideThe continous support of Prof. Deiseroth, Universität Siegen, and valuable hints of Prof. Kanatzidis, Michigan State University, are gratefully acknowledged. FT-1R spectra were recorded by R. Stötzel, Universität Siegen. (1997)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 36 (1997), S. 982-984 
    Details
    ISSN: 0570-0833
    Keywords: chalcogens ; copper ; solid-state structures ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.199709821
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