Thermodynamics of complex formation of indium metal ion with mercapto, hydroxy and amino substituted succinic acid
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Ultrasonic aided synthesis of a novel mesoporous cobalt-based metal-organic framework and its application in Cr(III) ion determination in centrum multivitamin and real water samples
2022, Microchemical JournalCitation Excerpt :Phthalaldehydic acid (2-formylbenzoicacid) (purity 97%), diaminodiphenyl ether (purity 98%) and cobalt(II) acetate tetrahydrate (purity 98%) have been purchased from Sigma-Aldrich Chemie GmbH (Eschenstrasse- German). Also, the organic solvents such as dimethylformamide (DMF) and absolute ethyl alcohol have been acquired spectroscopic pure from BDH (Dubai-UAE) [38]. All the glass equipments were washed with de-ionized water which was used in all the preparations.
Polymer complexes. LXXIV. Synthesis, characterization and antimicrobial activity studies of polymer complexes of some transition metals with bis-bidentate Schiff base
2021, Journal of Molecular StructureCitation Excerpt :The studies of the synthesized Schiff base ligand and its metal complexes have been correlated to their biological activities with their structural aspects. All the chemicals were purified by standard procedures [32]. Microanalyses of carbon, hydrogen and nitrogen were carried out at the Microanalytical Center, Cairo University, Egypt, using CHNS-932 (LECO) Vario Elemental Analyzer.
Synthesis, characterization, theoretical study and biological activity of Schiff base nanomaterial analogues
2019, Journal of Molecular StructureCitation Excerpt :The UV–Vis spectrum of the ligand exhibits a band at 44843 cm−1 attributed to π → π* transition within the free ligand [1,52]. Another absorption band observed at 26809 cm−1 for the ligand due to n → π* transition between lone-pair electrons of the p orbital of the N atom in the azomethine group and the O atom of the hydroxyl group [22]. There are three absorption bands at 15,565, 21,861, and 27,700 cm−1in the electronic spectrum of the Cr(III) complex shows.
(E)-3-(2-(furan-ylmethylene)hydrazinyl)-3-oxo-N-(thiazol-2yl)propanamide complexes: Synthesis, characterization and antimicrobial studies
2012, Journal of Molecular StructureCitation Excerpt :The pH-meter was calibrated before each titration using standard buffers. The ionization constants of the investigated ligand and the stability constants of its metal chelates with Co(II), Ni(II), Cu(II), Zn(II), Hg(II), Cd(II) and U(VI)O2 ions were determined potentiometrically using the technique of Sarin and Munshi [16]. The ionization constants of the ligands are calculated using the equation used by Irving and Rossotti [17].
Biological activity studies on metal complexes of novel tridentate Schiff base ligand. Spectroscopic and thermal characterization
2009, European Journal of Medicinal ChemistryCitation Excerpt :The other molecular ion peaks appeared in the mass spectrum (abundance range from 1–100 %) are attributed to the fragmentation of HL molecule obtained from the rupture of different bonds inside the molecule as shown in Scheme 1. The ionization constant of the ionizable groups in Schiff base under investigation is determined by a method similar to that described by Sarin and Munshi [20]. The free energy change, ΔG°, was also calculated and is found to be 54.04 KJ mol−1.