The thermal and detailed kinetic analysis of dipicolinate complexes

Uzun N., Çolak A. T., Emen F. M., KOYUNDERELİ ÇILGI G.

Journal of Thermal Analysis and Calorimetry, cilt.124, sa.3, ss.1735-1744, 2016 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 124 Sayı: 3
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1007/s10973-016-5251-y
  • Dergi Adı: Journal of Thermal Analysis and Calorimetry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1735-1744
  • Anahtar Kelimeler: 2,6-Pyridinedicarboxylate, Anti-cancer activities, Crystal structure, Thermal–kinetic analysis
  • Manisa Celal Bayar Üniversitesi Adresli: Hayır

Özet

The [Cu(pydc)(eim)3]·H2O (1), [Cu(pydc)(4hp)(H2O)] (2) and [Ni(pydc)(3hp)(H2O)2][Cu(pydc)(3hp)(H2O)2]·3H2O (3) complexes (H2pydc = 2,6-pyridinedicarboxylic acid or dipicolinic acid, eim = 2-ethylimidazole, 4hp = 4-hydroxypyridine, 3hp = 3-hydroxypyridine) were studied by thermo-gravimetric analysis at an ambient temperature up to 1000 K under nitrogen atmosphere. The complexes are stable about 350 K, and the decomposition reactions were carried out in seven, three and four stages for the complexes 1, 2 and 3, respectively. Following detailed thermo-gravimetrical analysis of the complexes, the decomposition mechanism was suggested for all complexes. The kinetic analysis of all decomposition stages of each compound was performed except for the final stages. The values of the activation energy, Ea, were obtained using model-free Kissinger–Akahira–Sunose and Flyn–Wall–Ozawa methods for all decomposition stages.