Spectral studies of complexes of nickel(II) with tetradentate schiff bases having N2O2 donor groups

Complexes of nickel(II) of N,N'-disalicylidene-1,2-phenylenediamine (H2dsp), N,N'-disalicylidene-3,4-diaminotoluene (H2dst), 4-nitro-N,N'-disalicylidene-1,2-phenylenediamine (H2ndsp) and N,N'-disalicylidene ethylenediamine (H2salen) have been prepared and characterised by element...

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Bibliographic Details
Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2003-01, Vol.59 (2), p.229-234
Main Authors: Garg, B S, Nandan Kumar, Deo
Format: Article
Language:English
Subjects:
Kinetics
Magnetic Resonance Spectroscopy
Models, Chemical
Nickel - analysis
Nickel - chemistry
Nitrogen - chemistry
Oxygen - chemistry
Schiff Bases
Spectrophotometry, Infrared
Temperature
Thermodynamics
Ultraviolet Rays
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Summary:Complexes of nickel(II) of N,N'-disalicylidene-1,2-phenylenediamine (H2dsp), N,N'-disalicylidene-3,4-diaminotoluene (H2dst), 4-nitro-N,N'-disalicylidene-1,2-phenylenediamine (H2ndsp) and N,N'-disalicylidene ethylenediamine (H2salen) have been prepared and characterised by elemental analysis, electronic, IR, magnetic susceptibility measurement, 1H NMR and thermal studies. TG studies show that the Ni(dsp) and Ni(salen) complex decomposed in one step and Ni(dst) and Ni(ndsp) complex in two steps. Kinetic and thermodynamic parameters were computed from the thermal decomposition data. The activation energy of either one step decomposition or two step decomposition of complexes lies 72-95 kJ mol(-1) range.
ISSN:1386-1425
DOI:10.1016/S1386-1425(02)00142-7