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Thermochemical investigation

Ni(II)-3-pyridylcarbinol (ronicol) interactions in solid halogeno and thiocyanato complexes

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Abstract

The stoichiometry of the thermal decomposition and the stereochemistry of the following compounds was studied: NiR4Cl2 (I), NiR4Br2 (II), NiR4I2·2H2O (III) and NiR4(NCS)2 (IV) (R=3-pyridylcarbinol, ronicol). In complexes I and II the loss of the volatile ligands (on the TG curves) occurs in three steps (−2R, −R, −R), in complex III in four steps (−2H2O, −2R, −R, −R) and in complex (IV) in one step (−4R). According to the quasi-equilibrium decomposition temperatures, the thermodynamic stability of NiR4X4 complexes can be ordered in the sequence (according to X):Cl<Br≈I<NCS. The spectral and magnetic data for all initial complexes indicated pseudooctahedral configuration.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, Slovak Technical University, 812 37, Bratislava, Slovakia

    E. Jóna

  2. Institute of Inorganic Chemistry, Centre of Chemical Research, Slovak Academy of Sciences, 842 36, Bratislava, Slovakia

    M. Kubranová

  3. Department of Physical Chemistry, Slovak Technical University, 812 37, Bratislava, Slovakia

    P. Šimon

  4. Institute of Chemistry, Wroclaw University, 50 383, Wroclaw, Poland

    J. Mroziński

Authors
  1. E. Jóna
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  2. M. Kubranová
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  3. P. Šimon
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  4. J. Mroziński
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Additional information

Part V in the series: “Thermal decomposition reactions of Nickel(II) complexes under quasi-equilibrium conditions”. Part IV: J. Thermal Anal. 46 (1996) 129.

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Jóna, E., Kubranová, M., Šimon, P. et al. Thermochemical investigation. Journal of Thermal Analysis 46, 1325–1337 (1996). https://doi.org/10.1007/BF01979246

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  • DOI: https://doi.org/10.1007/BF01979246

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