Abstract
A novel, simple approach to the synthesis of macrocyclic Schiff base ligand resulted from the condensation of bisaldehyde and ethylenediamine was prepared (7, 8, 15, 16, 17, 18-hexahydrodibenzo (a, g) (14) annulene) (L) and its complexes were synthesized and characterized using different physicochemical studies as elemental analysis, FT-IR, 1H NMR, conductivity, magnetic properties, thermal analysis, and their biological activities. The spectroscopic data of the complexes suggest their 1:1 complexe structures which are investigated by elemental analysis, FT-IR, 1H NMR, conductivity, magnetic properties, thermal analysis, and their biological activities. The spectroscopic studies suggested the octahedral structure for the all complexes. The spectroscopic data of the complexes suggest their structure in which (N2O2) group act as a tetradentate ligand and two chlorides as monodentate ligands. Also electronic spectra and magnetic susceptibility measurements indicate octahedral structure of these complexes. The synthesized Schiff base and its metal complexes also were screened for their antibacterial and antifungal activity. Here we report the effect of a neutral chelating ligand on the complexation with iron to determine it in different types of natural water using recovery test. The activity data show that the metal complexes to be more potent/ antibacterial than the parent Schiff base ligand against one or more bacterial species.
Highlights
A large number of Schiff bases and their complexes have been investigated for their interesting and important properties, such as their ability to reversibly bind oxygen [1], catalytic activity in the hydrogenation of olefines [2], photochromic properties [3,4] and complexing ability towards some toxic metals [5]
A novel and simple approach to the synthesis of macrocyclic Schiff base ligand resulted from the condensation of bisaldehyde and ethylenediamine was prepared (7, 8, 15, 16, 17, 18-hexahydrodibenzo (a, g) (14) annulene) (L) and its complexes were synthesized and characterized using different physicochemical studies as elemental analysis, FT-IR, 1H NMR, conductivity, magnetic properties, thermal analysis, and their biological activities
Designing a suitable polydentate Schiff base ligand to combine with a metal ion along with pseudohalide anion has opened a new area of synthesizing metal complexes of particular choice [10]
Summary
Been investigated for their interesting and important properties, such as their ability to reversibly bind oxygen [1], catalytic activity in the hydrogenation of olefines [2], photochromic properties [3,4] and complexing ability towards some toxic metals [5]. Designing a suitable polydentate Schiff base ligand to combine with a metal ion along with pseudohalide anion has opened a new area of synthesizing metal complexes of particular choice [10]. Such complexes are readily assembled from diamines and various salicylaldehyde derivatives and are amenable to combinatorial syntheses [11]. Numerous techniques were available in iron determination have been reported [22,23,24]. These techniques were tedious need time and rigid conditions. The present study was under taken to throw more light on the chelation behavior of Schiff base (L) towards some transition elements, which may help in more understanding of the mode of chelation of the new Schiff base towards metals and tried to used in the recovery test with a purity of more than higher than 96% for the metal ion
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