ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Complex compounds of nickel(II) with thiourea. II. Thermal decomposition of compounds of the type NiX2(tu)n

E. Jóna and T. Šramko

Department of Inorganic Chemistry, Slovak Technical University, Bratislava

Abstract: The thermal characters of the following complex compoimds of nickel(II) with thiourea were studied by the means of thermogravimetric method and by differential thermal analysis: NiCl₂tu₄, NiBr₂tu₆, NiBr₂tu₅, NiBr₂tu₄, NiBr₂tu₃f₅, Nil₂tu₆, Ni(N0₃)₂tu₆, NiBr(N0₃)tu₆, NiBr(N0₃)tu₄, Ni(Cl0₄)₂tu₆. The initial decomposition temperatures are within the range of 160—180 °C. By the kind of their thermograms the complexes may be devided into those, containing a halogenide, a nitrate and a Perchlorate anion, respectively. The complexes NiCl₂tu₄ and NiBr₂tu₆ have been studied in detail. Their thermograms show a characteristic loss of weight at about 300 °C, due to the release of about 1 atom CI, and Br, respectively, to the rise of NiS and to the partial decomposition of thiourea. The initial phases of the thermal decomposition of thiourea, NiCl₂tu₄, NiBr₂tu₄, NiBr₂tu₆ and Nil₂tu₆ were studied by the DTA method. The initial phase of the thermal decomposition of NiBr₂tu₆ was found to be analogous to that of Nil₂tu₆, while it was different for NiCl₂tu₄ and NiBr₂tu₄ even from one another.

Full paper in Portable Document Format: 217a517.pdf (in Slovak)

Chemical Papers 21 (7) 517–522 (1967)