A5029397922- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Vanadium and Halogenation Chemistry
- Metal complexes synthesis and properties
- Metal-Catalyzed Oxygenation Mechanisms
- Oxidative Organic Chemistry Reactions
- Synthesis and biological activity
- Protein Interaction Studies and Fluorescence Analysis
- Chemical Synthesis and Reactions
- Multicomponent Synthesis of Heterocycles
- Polyoxometalates: Synthesis and Applications
- Synthesis and Biological Evaluation
- Drug Transport and Resistance Mechanisms
- Synthesis and Characterization of Heterocyclic Compounds
- Tuberculosis Research and Epidemiology
- Surfactants and Colloidal Systems
- Metal-Organic Frameworks: Synthesis and Applications
- Cancer therapeutics and mechanisms
- Cassava research and cyanide
- Analytical Chemistry and Chromatography
- Microwave-Assisted Synthesis and Applications
- Adsorption and biosorption for pollutant removal
- Synthesis of Organic Compounds
- Magnetism in coordination complexes
- Trace Elements in Health
Jain University
2015-2024
General Electric (Norway)
2024
Vellore Institute of Technology University
2022
University of Delhi
2022
Healthcare Global Enterprises
2021
Instituto Superior Técnico
2008-2019
Rede de Química e Tecnologia
2019
Instituto Politécnico de Lisboa
2011-2019
Mahindra Group (India)
2019
Bharti Hospital
2019
For the development of a bioadsorbent with enhanced adsorption properties to remove pentachlorophenol (PCP) pesticide from aqueous solutions, modified chitosan material CHTA (1) was successfully obtained by crosslinking (CHT) (I) 2-hydroxy-1-naphthaldehyde. Functionalized further grafting CuCl2 prepare CHTAC (2). The products were characterized necessary chemical and spectroscopic techniques studied as an adsorbent for PCP removal solutions. capacity 1 2 improved 94% 76% respectively...
Reaction between [VO(acac)2] and the ONN donor Schiff base Hsal-ambmz (I) (Hsal-ambmz = obtained by condensation of salicylaldehyde 2-aminomethylbenzimidazole) resulted in formation complexes [VIVO(acac)(sal-ambmz)] (1), [VVO2(acac-ambmz)] (2) (Hacac-ambmz derived from acetylacetone 2-aminomethylbenzimidazole), known complex [VIVO(sal-phen)] (3) (H2sal-phen o-phenylenediamine). Similarly, [VIVO(acac)(sal-aebmz)] (7) has been isolated reaction with Hsal-aebmz (II) (Hsal-aebmz...
As a contribution to the development of novel vanadium complexes with pharmacologically interesting properties, two neutral dioxovanadium(V) [VO2(Hpydx-sbdt)] (1) and [VO2(Hpydx-smdt)] (3) [H2pydx-sbdt (I) H2pydx-smdt (II) are Schiff bases derived from pyridoxal S-benzyl- or S-methyldithiocarbazate] have been synthesized by reaction [VO(acac)2] potassium salts ligands in methanol followed aerial oxidation. Heating methanolic solutions these yields oxo-bridged binuclear [{VO(pydx-sbdt)}2mu-O]...
The Schiff base (Hfsal-dmen) derived from 3-formylsalicylic acid and N,N-dimethyl ethylenediamine has been covalently bonded to chloromethylated polystyrene give the polymer-bound ligand, PS-Hfsal-dmen (I). Treatment of with [V(IV)O(acac)(2)] in presence MeOH gave oxidovanadium(IV) complex PS-[V(IV)O(fsal-dmen)(MeO)] (1). On aerial oxidation methanol, 1 was oxidized PS-[V(V)O(2)(fsal-dmen)] (2). corresponding neat complexes, [V(IV)O(sal-dmen)(acac)] (3) [V(V)O(2)(sal-dmen)] (4) were...
Binucleating hydrazones CH2(H2sal-bhz)2 (I) and CH2(H2sal-fah)2 (II), derived from 5,5′-methylbis(salicylaldehyde) benzoylhydrazide or 2-furoylhydrazide, react with [VIVO(acac)2] to give dinuclear VIVO-complexes [CH2{VIVO(sal-bhz)(H2O)}2] 1 [CH2{VIVO(sal-fah)(H2O)}2] 4, respectively. In the presence of KOH CsOH·H2O, oxidation 2 results in formation dioxidovanadium(V) complexes, K2[CH2{VVO2(sal-bhz)}2]·2H2O 2, K2[CH2{VVO2(sal-fah)}2]·2H2O 5, Cs2[CH2{VVO2(sal-bhz)}2]·2H2O 3...
The Schiff bases H3dfmp(L)2 obtained by the condensation of 2,6-diformyl-4-methylphenol and hydrazones [L = isonicotinoylhydrazide (inh), nicotinoylhydrazide (nah) benzoylhydrazide (bhz)] are prepared characterized. By reaction [VIVO(acac)2] in methanol VIVO-complexes [VIVO{Hdfmp(inh)2}(H2O)] (1), [VIVO{Hdfmp(nah)2}(H2O)] (2) [VIVO{Hdfmp(bhz)2}(H2O)] (3) were obtained. Upon their aerial oxidation [VVO(OMe)(MeOH){Hdfmp(inh)2}] (4), [VVO(OMe)(MeOH){Hdfmp(nah)2}] (5)...
The reaction between [VIVO(acac)2] and the ONN donor Schiff base obtained by condensation of pyridoxal 2-aminoethylbenzimidazole (Hpydx-aebmz, I) or 2-aminomethylbenzimidazole (Hpydx-ambmz, II) in equimolar amounts results formation [VIVO(acac)(pydx-aebmz)] 1 [VIVO(acac)(pydx-ambmz)] 2, respectively. aerobic oxidation methanolic solution yielded [VVO2(pydx-aebmz)] 3 its with aqueous H2O2 gave oxidoperoxidovanadium(V) complex, [VVO(O2)(pydx-aebmz)] 4. 4 is also established titrations...
A new Schiff base, [H4pydmedpt]2+·2Cl–, derived from one of the forms vitamin B6 has been synthesized by condensation pyridoxal hydrochloride with N,N-bis[3-aminopropyl]-methylamine (medpt) and characterized analytical spectroscopic methods. The molecular structure is calculated density functional theory (DFT) procedures, donor properties each individual atom are evaluated calculation Fukui function. One pot reaction medpt vanadyl acetylacetonate yields brown complex...
Abstract [V IV O(acac) 2 ] (acac = acetylacetonate) was treated with ligands CH (H L ) in methanol heated at reflux to yield two neutral binuclear V complexes the formula [CH {V O O)} ], namely, 1 and . Ligands I II were derived from 5,5′‐methylenebis(salicylaldehyde) S ‐benzyldithiocarbazate sal‐sbdt) , or ‐methyldithiocarbazate sal‐smdt) ]. Aerial oxidation of presence KOH CsOH · H resulted formation dioxidovanadium(V) complexes, K (sal‐sbdt)} 2H ( 3 ), Cs 4 (sal‐smdt)} 5 6 ). The...
Three new complexes of Cu(II) and Ni(II), [Cu(II)(H(2)pydmedpt)](2+)·2Cl(-) (1), [Ni(II)(H(2)pydmedpt)](2+)·2Cl(-) (2) [Ni(II)(pydmedpt)(OH)](-)·K(+) (3) the Schiff base ligand [H(2)pydmedpt](2+)·2Cl(-) were synthesized by in situ reaction pyridoxal (pyd), a vitamer vitamin B(6), N,N-bis[3-aminopropyl]methylamine (medpt) copper(II) acetate or nickel(II) acetate, respectively. The molecular structures 1 2 determined single crystal X-ray diffraction studies. structure 3 solid state was...
Abstract The synthesis of dinuclear oxidovanadium(IV) and dioxidovanadium(V) complexes two hydrazones [CH 2 (H sal‐nah) ( I ) CH sal‐inh) II )] derived from 5,5′‐methylenebis(salicylaldehyde) (Hsal) ] nicotinic acid hydrazide (nah) or isonicotinic (inh) is described. compounds were characterised in the solid state solution, namely by spectroscopic techniques (IR, UV/Vis, EPR, 1 H, 13 C 51 V NMR). It has been demonstrated that K {V O (sal‐nah)} · 2H 3 ), Cs 4 (sal‐inh)} 5 are active oxidative...
This paper describes the activity of a Schiff base ligand, derived from pyridoxal, as promising fluorescence probe for biologically important Zn(II) ion sensing. is first report vitamin based ligand fluorescent sensing ions. The H(2)pydmedpt, condensation pyridoxal (pyd) and N,N-bis[3-aminopropyl]methylamine (medpt), exhibits around 325-fold increase in quantum yield due to zinc triggered switching. response specific ions, remains unaffected by presence alkali alkaline earth metals but...