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  • complexes  (2)
  • mid- and far-IR  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    The thermal, spectral and magnetic studies ofp-tolylacetic acid compounds of cobalt, nickel and copper (1996)
    Springer
    Journal of thermal analysis and calorimetry 46 (1996), S. 1577-1582 
    Details
    ISSN: 1572-8943
    Keywords: complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The preparation and some properties of complexes ofp-tolylacetic acid with cobalt, nickel and copper are described. Magnetic measurements, electronic and far infrared spectra show that the metal complexes have octahedral structures. Infrared spectra indicate that coordination takes place through the carboxyl group to the metal ions and that the water molecule in each of the complexes is present as water of crystallisation. Thermogravimetry studies also show that the water molecules in each of the complexes do not form a coordinate bond with the metal ion. Differential thermal analysis show that the dehydration processes are accompanied by endothermic reactions. In each case the anhydrous metal complex undergoes an exothermic reaction to give the metal oxide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01980763
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  • 2
    Electronic Resource
    Electronic Resource
    Primary aliphatic amine complexes of transition-metal halides (1997)
    Springer
    Journal of thermal analysis and calorimetry 50 (1997), S. 167-173 
    Details
    ISSN: 1572-8943
    Keywords: complex ; methylamine ; mid- and far-IR ; nickel(II) halides ; thermal analysis ; UV/VIS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The hexakis(methylamine) complexes of nickel(II)-chloride, -bromide and -iodide have been prepared using-gas phase preparation procedure. The thermal decomposition starts with the release of four moles of the organic ligand. The bis(methylamine) intermediate decomposes in one step to the pure nickel(II) halide in the case of the chloride compound, however one and a half moles of methylamine containing intermediates were identified for the bromide and iodide analogues. The UV/VIS and the far IR spectra of the hexakis complexes show a typical octahedral environment around the central nickel(II) ion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01979559
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal, structural and electrical properties (1996)
    Springer
    Journal of thermal analysis and calorimetry 46 (1996), S. 1193-1200 
    Details
    ISSN: 1572-8943
    Keywords: complexes ; electrical properties ; structural properties ; thermal properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The chloro compound of 3-hydroxy-2-quinoxalinecarboxylic acid with nickel(II) has been prepared in ethanolic solution from which a solid compound was isolated. Spectral and magnetic measurements show that the nickel ions are in an octahedral environment. Thermogravimetry, differential thermal analysis and electrical conductivity data are reported for 3-hydroxy-2-quinoxalinecarboxylic acid and its nickel complex. The conductivity measurements indicate that electron/hole traps are emptied during heating of the complex but repopulation occurs in about 24 h at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01979234
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