Thermal study of ruthenium(II) complexes containing pyridine-2,6-diimines |
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| Authors: | F. Doğan O. Dayan M. Yürekli B. Çetinkaya |
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| Affiliation: | 1. Department of Chemistry, Faculty of Science, Ege University, ?zmir, Turkey
2. Department of Chemistry, Faculty of Arts and Science, ?anakkale Onsekiz Mart University, ?anakkale, Turkey
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| Abstract: | Thermal behaviors of mono-and binuclear Ru(II)-pydim complexes: [PydimCl2RuL] (Pydim: pyridine-2,6-diimine; 2: L=NCMe; 3: L=PPh3) and [PydimCl2Ru(L-L)RuCl2Pydim] (4: L-L=pyrazine; 5: L-L=4,4′-bipyridine) have been studied in nitrogen atmosphere using TG/DTG and DTA techniques. The decompositions of complexes occur in stepwise. The values of activation energy, E a, and reaction order, n of the thermal decomposition were calculated by means of several methods such as Coats-Redfern (CR), MacCallum-Tanner (MT), Horowitz-Metzger (HM), van Krevelen (vK), Madhusudanan-Krishnan-Ninan (MKN) and Wanjun-Yuwen-Hen-Cunxin (WYHC) based on the single heating rate. Most appropriate method was determined for each decomposition step according to the least-squares linear regression. |
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