A5035118084- Metal complexes synthesis and properties
- Metal-Catalyzed Oxygenation Mechanisms
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- DNA and Nucleic Acid Chemistry
- Crystallography and molecular interactions
- thermodynamics and calorimetric analyses
- Photosynthetic Processes and Mechanisms
- Computational Drug Discovery Methods
- Electrochemical Analysis and Applications
- Various Chemistry Research Topics
- Organic Chemistry Cycloaddition Reactions
- Plant biochemistry and biosynthesis
- Advanced oxidation water treatment
- Lanthanide and Transition Metal Complexes
- Phosphorus compounds and reactions
- Protein Interaction Studies and Fluorescence Analysis
- Advanced biosensing and bioanalysis techniques
- Porphyrin and Phthalocyanine Chemistry
- Spectroscopy and Quantum Chemical Studies
University of Calcutta
1979-2019
Jadavpur University
2011-2016
In this paper, the interaction of rhodamine123 (R123) with calf thymus DNA has been studied using molecular modeling and other biophysical methods like UV–vis spectroscopy, fluoremetry, optical melting, isothermal titration calorimetry, circular dichroic studies. Results showed that binding energy is about −6 to −8 kcal/mol, process favored by both negative enthalpy change positive entropy change. A new method determine different thermodynamic properties calorimetric heat capacity introduced...
A one-dimensional mixed-valence Mn<sup>II</sup>/Mn<sup>III</sup>chain has been synthesized using<italic>N</italic>-salicylidene-<sc>l</sc>-alanine and 2,2′-bipyridine. The complex shows moderate catecholase phenoxazinone synthase-like activity.
A μ<sub>3</sub>-chlorido and a μ<sub>1,1,1</sub>-azido bridged defective dicubane tetranuclear Mn(<sc>ii</sc>) complexes of polynucleating Mannich base ligand show significant catalytic oxidase activities are antiferromagnetically coupled which is rationalized by DFT calculations.
Three new one-dimensional Co<sup>II</sup>/Co<sup>III</sup> chains have been synthesized using <italic>N</italic>-salicylidene-<sc>l</sc>-alanine/<italic>N</italic>-salicylidene-<sc>l</sc>-phenylalanine and 2,2′-bipyridine/1,10-phenanthroline. All three complexes exhibit phenoxazinone synthase-like activity.
Described in this work is the kinetics of oxidation ascorbic acid and hydroquinone by a tetranuclear Mn(IV) oxidant, [Mn4(μ-O)6(bipy)6]4+ (14+, bipy =2,2/-bipyridine), aqueous solution over wide pH range 1.5–6.0. In particular, below 3.0, protonation on oxo-bridge 14+ results formation [Mn4(μ-O)5(μ–OH)(bipy)6]5+ (1H5+) as an additional oxidant 14+. Both ascorbate whereas only none its protolytic species were found to be reactive reducing agents these reactions. Analysis rate data clearly...
Three trinuclear Ni(II)-Na(I) complexes, [Ni2(L1)2NaCl3(H2O)]·H2O (1), [Ni2(L2)2NaCl3(H2O)] (2), and [Ni2(L3)2NaCl3(OC4H10)] (3) have been synthesized using three different NNO donor tridentate reduced Schiff base ligands, HL1 = 2-[(3-methylamino-propylamino)-methyl]-phenol, HL2 2-[(3-methylamino-propylamino)-methyl]-4-chloro-phenol, HL3 2-[(3-methylamino-propylamino)-methyl]-6-methoxy-phenol that had structurally characterized. Among these 1 2 are isostructural in which dinuclearNi(II)...
In this work we report the kinetics of oxidation hydroxylamine by a trinuclear Mn(IV) oxidant, [Mn3(μ-O)4(phen)4(H2O)2]4+ (1, phen = 1,10-phenanthroline), in aqueous solution over pH range 2.0–4.0. The species (1) deprotonates at physiological pH: 1 ⇌ 2 + H+; pK1 4.00 (± 0.15) 25.0 °C, I 1.0 (M) NaNO3. Both and are reactive oxidants reacting with conjugate acid hydroxylamine, viz.NH3OH+ where deprotonated oxidant reacts faster. This finding is contrast to common observation belief that...
A quite simple and inexpensive technique is described here to represent the approximate shapes of atomic orbitals molecular formed by them following principles linear combination (LCAO) method. Molecular a few molecules can also be pictorially represented. Instructors employ method demonstrate application LCAO method, which help students better understand bonding principle.