Author(s)

Thevabakthi Siluvai Muthu Arul Jeevan¹, Maria Francis George Johnson², Atnafu Guadie Assefa¹, Sebastian Arockiasamy³, Karachalacheruvu Seetharamaiah Nagaraja²

¹Department of Chemistry, College of Natural and Computational Sciences, University of Gondar, Gondar, Ethiopia.
²Department of Chemistry, Loyola Institute of Frontier Energy (LIFE), Loyola College, Chennai, India.
³Department of Chemistry, School of Advanced Sciences (SAS), VIT University Chennai Campus, Chennai, India.

The bis(N-ethyl-5-methylsalicylaldimine)nickel(II) [Ni(5-me-saletN)₂] complex was synthesized and characterized by elemental analyses, FT-IR, TG-DTA, mass spectrometry and vapour pressure measurement studies. The TG curve of the complex showed a single-step weight loss commencing from 490 K to nil residue at 600 K, without competing fragmentation step. The non-isothermal vaporization activation energy value determined by Coats-Redfern method yielded the value of 93.5 ± 7 kJmol^–1. The dynamic TG run proved the complex to be completely volatile. And the equilibrium vapour pressure of the complex over the temperature range of 421 - 524 K, determined by the TG-based transpiration technique yielded the value of 94.2 ± 1.2 kJmol–1 for its standard enthalpy of vaporization . The entropy of vaporization was calculated from the intercept and found to be 249.4 ± 2.6 Jmol^–1•K^–1.

Nickel Complexes, Enthalpy of Vaporization, Thermogravimetry, Vapour Pressure, Kinetic Studies

Jeevan, T. , Johnson, M. , Assefa, A. , Arockiasamy, S. and Nagaraja, K. (2015) Characterization and Evaluation of Standard Enthalpy of Vaporization and Kinetic Studies of Volatile bis(N-ethyl-5-methyl-salicylaldimine)nickel(II) Complex. American Journal of Analytical Chemistry, 6, 156-163. doi: 10.4236/ajac.2015.62014.