The synthesis and structural characterization of transition metal coordination complexes of coumarilic acid
[ X ]
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The coumarilate (coum(-)) complexes of Co-II(1), Ni-II(2) Cu-II(3) and Zn-II(4) were synthesized and characterized by elemental analysis, magnetic susceptibility, solid-state UV-Vis, FTIR spectra, thermoanalytical TG-DTG/DTA and single-crystal X-ray diffraction methods. It was found that all of the complex structures have 2 mol (coum(-)) ligand bonded as monoanionic monodentate in the structures of 1 and 2 while they were coordinated to metal cations as monoanionic bidentate in the complexes 3 and 4. There was not any hydrate water in the metal complexes. The complexes of 1 and 2 have four moles of aqua ligand, and the other complexes have two moles. Thermal decomposition of each complex starts with dehydration, and then the decomposition of organic parts goes. The thermal dehydration of the complexes takes place in one (for the compounds of 2, 3, 4) or two (for the compound 1) steps. The decomposition mechanism and the thermal stability of the complexes under investigation were determined on the basis of their structures. Metal oxides were obtained as the final decomposition product.
Açıklama
Anahtar Kelimeler
Coumarilate, Metal complexes, Thermal analysis, Crystal structure, Structural analysis
Kaynak
Journal of Thermal Analysis and Calorimetry
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
128
Sayı
3
