Synthesis, spectral analysis, stability constants, antioxidant and biological activities of Co (II), Ni (II) and Cu (II) mixed ligand complexes of nicotinamide, theophylline and thiocyanate
Küçük Resim Yok
Tarih
2017
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In the present study, transition metal complexes or coordination entities with metal precursors such as Co (II), Ni (II) and Cu (II) of mixed ligands namely, nicotinamide (NA), theophylline (TP) and KSCN in water were synthesized under refiuxing conditions. The optimization of the reactions to obtain the composition of complexes was performed. The structural elucidation of the complexes was undertaken by using physico-chemical and spectroscopic methods (UV/Vis, FT-IR, Mass and XRD) and thermal analysis. The spectral measurements of mixed ligands with the Co (II), Ni (II) and Cu (II) complexes are compared with each other in determining which atoms of the ligand are coordinated to the metal ion. Based on spectral and magnetic moment measurements, all the coordination entities were identified as in distorted octahedral structure and have the form [M(NA)(2)(TP)(2)(SCN)(2)].xH(2)O. In addition, K (stability constant) and AG (Gibbs free energy) values were calculated by using the Babko and Stanley & Turner's methods. Antioxidant, antibacterial and antifungal activities of the complexes were studied. (C) 2017 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Spectrophotometry, Nicotinamide, Theophylline, Stability Constant, Antioxidant Activity, Biological Activity, Transition-Metal-Complexes, O-Phenylenediamine, Aqueous-Solution, Solubility, Caffeine, Derivatives, Gold(Iii), Solvents, Cu(Ii), Copper
Kaynak
Journal Of Molecular Structure
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
1149
