Journal
INORGANICA CHIMICA ACTA
Volume 362, Issue 11, Pages 4091-4098Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2009.06.003
Keywords
X-ray crystallography; 2,2 '-Bipyridyl; Isoconversional; Explosion delay; Isothermal TG; Model-fitting
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Funding
- UGC
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Three transition metal perchlorate complexes of 2,2 '-bipyridyl such as [Mn(bipy)(2)(H(2)O)(ClO(4))]ClO(4), [Cu(bipy)(ClO(4))(2)(H(2)O)(2)], [Zn(bipy)(2)(H(2)O)](ClO(4))(2) have been prepared, and characterized by X-ray crystallography. Their thermal decomposition has been studied using iso and non-isothermal thermogravimetry (TG); differential scanning calorimetry (DSC). Kinetics parameters were evaluated by model-fitting and isoconversional methods. Their thermolytic pathways have also been suggested which involves decomposition followed by explosion. The Mn and Cu complexes decompose in single step whereas Zn complex decomposes in two steps. The coordination number of Mn and Cu atoms is found to be six and that of Zn is five. In order to evaluate the response of rapid heating, explosion delay (D(E)) measurements were undertaken. The explosion delay and activation energy were found to decrease in the order: Zn > Cu > Mn. (C) 2009 Elsevier B. V. All rights reserved.
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