Synthesis, Characterization, Electrochemical and Antimicrobial Activity of Macrocyclic Binuclear Cu(II), Ni(II) and VO(II) Schiff Base Complexe

Abstract

). Structural characterization of the complexes were achieved by several physicochemical methods, namely elemental analysis, electronic spectra, infrared, EPR, cyclic voltammetry, molar conductivity and magnetic susceptibility measurements. A square planar binuclear structure was proposed for the perchlorate anions in Cu(II) and Ni(II) complexes. Whereas the square pyramidal environment around the VO(II) center. The Schiff base complexes were investigated for antibacterial and antifungal properties of gram-positive bacteria (staphylococcus auerus), gramnegative bacteria (pseudomonas fluorescens) and fungi (Aspergillus fumigatus) were used in this study to assess their antimicrobial properties. The results showed that this skeletal framework exhibit marked potency as antimicrobial agents.

Synthesis and Characterization of Mn(II) ,Co(II) ,Ni(II) ,Cu(II) ,Zn(II) and Cd(II) Complexes with Di-Schiff Bases Derived from o- or m- Phenylenediamine and 9,10-Phenanthrenequinone

“…The magnetic moment value of Ni(II) complex (3) found to be (3.86 B.M) and its electronic spectra show a band Ѵ 3 at 14792 cm -1 due to 3 T 1 (F)→ 3 T 1 (P) transition in tetrahedral geometry (33) . The Ni(II) complexes (9) show a diamagnetic moment (37) and the electronic spectra show two bands at 16666 cm -1 and 26315 cm -1 due to 1 A 1 g→ 1 A 2 g and 1 A 1 g→ 1 B 2 g which is consistent with square planar geometry (38) .…”

Synthesis, Characterization and Biological Studies of Porphyrinyloxovanadium(IV)benzimidazole Complexes

“…The general synthetic routes to corresponding metallated and axially ligated oxovanadium(IV) peripherally tetra-substituted tetraphenylporphyrins are shown in Scheme 1 respectively. All of these new oxovanadium(IV) porphyrin were purified by column chromatography with aluminum oxide as adsorbent and were characterized by spectral data (UV-Visible spectroscopy, IR spectroscopy, 1 H & 13 C NMR spectroscopy, mass spectral data and elemental analysis). The characterization data of the new compounds are consistent withthe assigned formula.…”

“…The great interest in synthetic macrocycles and their corresponding metal complexes is related to the fact that they can mimic naturally-occurring macrocyclic molecules in their structural features. The formation of macrocyclic complexes depends significantly on the dimension of the internal cavity, on the rigidity of the macrocycle, on the nature of its donor atoms and on the complexing properties of the counter ion [1][2][3] . Porphyrins are an important class of macrocyclic ligands in coordination chemistry and find extensive applications in different fields.…”

“…UV-vis(CHCl 3 ): λ max (in nm) (log ε) 427.0(4.700) for B-band and 560.2(4.272) and 608.0(4.102) for Q-bands; IR (KBr, cm -): 1001 (V=O);1 H NMR (CDCl 3 ): δ 9.0 (s, 8H, β-Pyrrole Protons), 8.18 (d, 10H, J=7, H o ), 7.99 (m, 14H, H m.p ) for meso-aryl Protons and 2.00 (s, 3H, CH 3 ), 6.11-6.14(2H, m, ArH) and 7.00-7.23(2H, m, ArH) for bmz protons; 13 C NMR (CDCl 3 ): 123.5, 128.4, 128.8, 131.5, 135.0, 142.6145.0, 15.2, 24.6, 115.4, 121.6, 139.2 and 151.7 ppm. Anal.…”

Macrocyclic Assembly: A Dive into the Pecking Order and Applied Aspects of Multitalented Metallomacrocycles

“…The great interest in synthetic macrocycles and their corresponding metal complexes is related to the fact that they can mimic naturally occurring macrocyclic molecules in their structural features. The formation of macrocyclic complexes depends significantly on the dimension of the internal cavity, on the rigidity of the macrocycle, on the nature of its donor atoms, and on the complexing properties of the counter ion [78].…”