Assembly of [2 + 2] bimetallic macrocyclic complexes from bis(bipyridyl) ligands and metal ions

1994 ◽  
pp. 77 ◽  
Author(s):  
Alexander Bilyk ◽  
Margaret M. Harding
Keyword(s):  
Metal Ions ◽  
Macrocyclic Complexes

scholarly journals Biological and Electrochemical Studies of Macrocyclic Complexes of Iron and Cobalt

2020 ◽  
Vol 11 (1) ◽  
pp. 7393-7399
Keyword(s):  
Metal Ions ◽  
Analytical Techniques ◽  
Antimicrobial Activities ◽  
Macrocyclic Complexes ◽  
Oxidation States ◽  
Electron Transfer Rate ◽  
Standard Drug ◽  
E Coli ◽  
Heterogeneous Electron Transfer ◽  
Electron Transfer Rate Constant

In this work, we synthesized two tetraaza [N4] macrocyclic complexes of FeIII and CoII metal ions. The synthesized macrocyclic complexes were fully characterized by using various analytical techniques IR, UV-Vis, and MS. The spectral analysis indicated an octahedral geometry for both macrocyclic complexes. The electrochemical behavior was carried out using cyclic voltammetry on the Pt dish (0.031 cm2) electrode. The complexes were shown to have unusual oxidation states for the metal ions. The “heterogeneous electron transfer rate constant” (Ko) was also calculated using “Nicholson and Kochi’s method” and observed in the order: KoCoII > KoFeIII. The antimicrobial activities of two complexes were computed against E. coli, P. aeruginosa, B. cereus, S. aureus, whereas antifungal activities against C. Albicans and were contrasted with the standard drug “Gentamycin”.

Synthesis, characterization and biological activity of tin(IV) macrocyclic complexes derived from 1,2-diphenylethane-1,2-dione dihydrazone

2017 ◽  
Vol 40 (5-6) ◽  
Author(s):  
Syed Sauban Ghani
Keyword(s):  
Biological Activity ◽  
Metal Ions ◽  
Macrocyclic Complexes ◽  
Molar Ratio

AbstractThe reaction of dimethyl tin(IV) dichloride with 1,2-diphenylethane-1,2-dione dihydrazone in the presence of metal ions in a 2:2:1 molar ratio resulted in the isolation of macrocyclic complexes of the types [MLX

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