Thermal Decomposition Studies: Part II kinetics of dehydration of transition metal complexes of salicylic acid

Heda, B. D.; Khadikar, Padmakar V.; Gogne, O. K.

doi:10.1002/bscb.19800890912

Bulletin des Soc Chimique

1980

DOI: 10.1002/bscb.19800890912

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Thermal Decomposition Studies: Part II kinetics of dehydration of transition metal complexes of salicylic acid

B. D. Heda

Padmakar V. Khadikar

O. K. Gogne

Abstract: Various kinetic parameters of the thermal dehydration reaction of metal complexes of salicylic acid with Fe (II), Zn (II), and VO (II) have been evaluated using Horowitz and Metzger and Fuoss methods. Observed kinetic parameters indicate the first order reaction. The activation energy of the thermal dehydration decreases in the order ‐ VO > Zn > Fe.

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1982

1987

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Cited by 10 publications

References 3 publications

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Structure and thermal characterization of tris-thallium(III) glycollate

Khadikar

1987

Journal of Thermal Analysis

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The thermal decarboxylation of TI(GLA)3 (where GLA stands for the anion ofglycollic acid) was studied by TG, DTG and DTA techniques. The results showed the escape of all three glycollic acid moieties in a single step. The I R spectra of the ligand and the complex indicated the bidentate character of carboxylate ion and the fact that the proton from the hydroxy group is not replaced during complex formation, The various kinetic and thermodynamic parameters were estimated from analysis of the TG, DTG and DTA curves of the sample, employing several computational methods. Precise results were then obtained by the method of least squares and are discussed.The thermal decomposition of metal carboxylates has attracted great interest during recent years [1,2]. However, work on the thermal decomposition of heavy metal carboxylates started only a short time ago [3]. Recently, we reported on the thermal dehydration and decomposition of metal complexes of salicylic and nuclear substituted salicylic acids [4][5][6][7][8][9]. The work on the thermal decomposition of metal complexes of hydroxy acids is very limited. As an extension of our previous studies [4][5][6][7][8][9], the present report deals with the thermal decarboxylation of TI(III) glycollate, with a view to understanding the mechanism of the decomposition and the nature of the decomposition products. The characterization ofTl(IlI) glycollate was carried out through elemental analysis, IR spectra, TG, DTG and DTA studies. Attempts were also made to estimate the kinetic parameters from thermal studies, employing different computational methods, e.g. the Horowitz-Metzger

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Structure and thermal characterization of tris-thallium(III) glycollate

Khadikar

1987

Journal of Thermal Analysis

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Kinetics of thermal dehydration of some bis-salicylato-diaquo complexes of transition metal ions

Khadikar

Ali

Heda

1985

Journal of Thermal Analysis

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Zinc and cadmium

Constable¹

1982

Coordination Chemistry Reviews

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Thermal Decomposition Studies: Part II kinetics of dehydration of transition metal complexes of salicylic acid

Cited by 10 publications

References 3 publications

Structure and thermal characterization of tris-thallium(III) glycollate

Structure and thermal characterization of tris-thallium(III) glycollate

Kinetics of thermal dehydration of some bis-salicylato-diaquo complexes of transition metal ions

Zinc and cadmium

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