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Preparation, Characterization and Biological Activity Studies for Some Mixed Ligands Complexes of 1, 10- Phenanthroline and Schiff Base Ligand with Metal Ions

“…In complexation the (IR) spectra displayed frequency at the range (1626-1631) cm -1 were attributed to υ(C=N) azomethine groups, which moved to a lower frequency in comparison with that of the Schiff base, pointing the sharing of -C=N nitrogen in chelation to the metal ion [15]. Wherefore, the ligand represents as a tetradentate coordinating agent, bonded to the metal ion via the nitrogen (-C=N) atoms and the oxygen atoms of carboxylic groups of the Schiff base [16].…”

Anticancer Activity of Molecular Compounds of Arsenic, Antimony and Bismuth

“…The coordination of a Schiff base to antimony(III), leading to [Sb(NNS)Cl 2 ] (XXV), results in a compound that displays moderate activity against the CEM-SS (T-lymphoblastic leukaemia) human cell line [64].…”

Thermal stability eminence of PMMA prepared in presence of photosynthesized ruthenium carbonyl Schiff base as a catalyst

“…As observed, almost the same pattern of dependence is revealed for both M w and M n , indicating polydispersity consistency for samples prepared at different concentrations. From the results of the polymerization reaction it seems that the available complex compound oxidation states act as a radical transfer propagating step analogue to general trend adopted by controlled radical polymerization [32][33][34][35] in the presence of an initiator, such as NaHSO 3 , where in its absence such role diminishes. In general, the conversion of MMA to PMMA was found to decrease from 61 to 10% as catalyst concentration increases with a direct impact on the polydispersity toward higher values.…”

“…Schiff base-metal complexes are characterized by interesting and important properties, such as their ability to reversibly binding oxygen in epoxidation reaction, 1 biological activity, [2][3][4][5] complexing ability toward some toxic metals, 6 catalytic activity in hydrogenation of olefins, 7 and photochromic properties. 8,9 Transition metal carbonyls were indicated as reactive during several reactions, where carbon monoxide serves mainly as the provider of reactivity and stability.…”

“…15 Accordingly, such claimed reactivity of transition metal carbonyls is promising for the solution polymerization processes. In the present article, PMMA was prepared in the presence of [Ru(CO) 2 (acacen)] as a catalyst and NaHSO 3 as an initiator at different concentrations of ruthenium acacen complex to develop highly resistance polymers toward thermal degradation atmospheres.…”