Thermally induced isomerisation and decomposition of diethylenetriamine complexes of nickel (II) in the solid state

Koner, Subratanath ; Ghosh, Ashutosh ; Chaudhuri, Nirmalendu Ray (1988) Thermally induced isomerisation and decomposition of diethylenetriamine complexes of nickel (II) in the solid state Transition Metal Chemistry, 13 (4). pp. 291-296. ISSN 0304-3285

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Official URL: https://link.springer.com/article/10.1007/BF010256...

Related URL: http://dx.doi.org/10.1007/BF01025677

Abstract

Complexes [NiL2]X2•nH2O (L = diethylenetriamine; n = O when X = CF3CO2 or CCl2CO2; n = 1 when X = Cl or Br and n = 3 when X = 0.5SO4 or 0.5SeO4) and NiLX2•nH2O (n = 1 when X = Cl or Br; n = 3 when X = 0.5SO4 or 0.5SeO4) have been synthesised and investigated thermally in the solid state. NiLSO4 was synthesised pyrolytically in the solid state from [NiL2]SO4•[NiL2]X2(X = Cl or Br) undergo exothermic irreversible phase transitions (242–282° C and 207–228° C; ΔH = −11.3 kJ mol−1 and −1.9 kJ mol−1 for [NiL2]Cl2 and [NiL2]Br2, respectively). [NiL2]-phenomenon (158–185° C; ΔH = 2.0 kJ mol−1). NiLX2• nH2O (n = 1 or 3) undergo simultaneous deaquation-isomerisation upon heating. All the complexes possess octahedral geometry.

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