Deepali Jain

University of Delhi, Old Delhi, NCT, India

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Publications (14)7.47 Total impact

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    Anjana Sarkar · Sulekh Chandra · Deepali Jain

    Full-text · Conference Paper · Jun 2015
  • Anjana Sarkar · Sulekh chandra · Deepali Jain
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    ABSTRACT: Bis Macrocyclic Ni(II) Metal Complexes with a New Tetradentate Ligand: Synthesis, Spectroscopic and Biochemical Characterization Sulekh Chandraa*, Anjana Sarkarb, Deepali Jainc a. Department of Chemistry, Zakir Hussain College, University of Delhi, J.L.N. Marg, New Delhi-110002, India. E-mail: schandra_00@yahoo.com b. Department of Chemistry, SAS, NSIT, Dwarka, Sec-3, New Delhi-110078, India. E-mail: anjisarkar@gmail.com c. Department of Chemistry, D.N. College, Meerut, UP, India. E-mail: deepali101@gmail.com Abstract Ni(II) complexes were synthesized with 1,1’-diphenyl and 1,1’-diphenyl-metane-bis(8,10-dimethyl-1,37,11,15-pentaazacyclohexadeca-7,11-diene) a tetradentate ligand (L) and characterized by elemental analysis, molar conductance measurements, IR, electronic and EPR spectral studies. The molar conductance measurements of all the complexes in DMF solution corresponds to non electrolytic nature for the complexes, thus these may be formulated as [NiL2RX4] [ where R= (C6H4NH2)2CH2, X= Cl-, CH3COO-, NO3- and ClO4-]. All the complexes are of the high spin type and found to have six coordinated octahedral geometry except the complexes of perchlorate which were four coordinate and square planar in geometry. All the complexes were screened for antimicrobial activities. It has been observed that the complexes are more active as compared to ligands.
    No preview · Conference Paper · Dec 2014
  • Anjana Sarkar · Sulekh Chandra · Deepali Jain

    No preview · Conference Paper · Mar 2014
  • Anjana Sarkar · Sulekh Chandra · Deepali Jain
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    ABSTRACT: Pd(II), Pt(II), Ru(II) and Ir(II) complexes of 14-membered [N4] macrocyclic ligand: Spectroscopic and biological approach. Deepali Jaina, Sulekh Chandrab and Anjana Sarkarc a Department of Chemistry, D. N. College, Meerut. b Department of Chemistry, Zakir Husain Delhi College (University of Delhi), New Delhi-110002. c Department of Chemistry, Netaji Subhash Chandra Institute of Technology, Dwarka, New Delhi-110078. Abstract A novel, tetradentate nitrogen donor [N4] macrocyclic ligand, i.e. 3,5,14,16-tetramethyl-2,6,13,17-tetraazatricyclo[12,0,07-12] cosa-1(22),2,5,7,9,11,13,16,18,20-decaene(L), has been synthesized and characterized by elemental analyses, IR, Mass, and 1H NMR spectral studies. Complexes of Pd(II), Pt(II), Ru(III) and Ir(III) have been prepared and characterized by elemental analyses, molar conductance measurements, magnetic susceptibility measurements, IR, Mass, electronic spectral and thermal studies. On the basis of molar conductance the complexes may be formulated as [PdL]Cl2, [PtL]Cl2, [Ru(L)Cl2]Cl and [Ir(L)Cl2]Cl. The complexes are insoluble in most common solvents, including water, ethanol, carbon tetrachloride and acetonitrile, but soluble in DMF/DMSO. The value of magnetic moment indicates that all the complexes are diamagnetic except Ru(III) complex which shows magnetic moment corresponding to one unpaired electron. The magnetic moment of Ru(III) complex is 1.73 B.M. at room temperature. The antimicrobial activities of ligand and its complexes have been screened in vitro, as growth inhibiting agents. The antifungal and antibacterial screening were carried out using Food Poison and Disc Diffusion Method against plant pathogenic fungi and bacteria Alternaria porri, Fusarium oxysporum, Xanthomonas compestris and Pseudomonas aeruginosa respectively. The compounds were dissolved in DMSO to get the required solutions. The required medium used for these activities was PDA and nutrient agar.
    No preview · Conference Paper · Jun 2012
  • Sulekh Chandra · Deepali Jain · Anupma
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    ABSTRACT: The complexes of NiII and CuII were synthesized with the new azamacrocyclic ligand. The ligand [1,5,8,12-tetraaza-3,10-diethyl-2,4,9, 11-tetramethyl-6(7),13(14)-di(bromopyridine)] was prepared by the reaction of 3-ethyl-2,4-pentadione and 5-bromo-2,6-diaminopyridine. All the complexes have been found to have general composition [M(L)X2] [where M = Ni II and CuII and X = Cl-, NO3-, 1/2SO42-]. All the complexes are characterized by the conductance measurements, magnetic susceptibility measurements, mass, IR and electronic spectral studies. An octahedral geometry was assigned for NiII complexes and tetragonal for CuII complexes. The biological actions of the ligand and complexes have been screened in vitro against different pathogenic fungi and several bacteria to study their comparative capacity to inhibit the growth.
    No preview · Article · Oct 2010 · Journal- Indian Chemical Society

  • No preview · Conference Paper · Dec 2009
  • A. Rawat · S. Chandra · A. Sarkar · D. Jain
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    ABSTRACT: A polymeric membrane based lanthanum selective electrode was developedusing N,N'-1,3-phenylenedimaleimide. The best performance was recorded with a membrane composition of PVC: DBP: Ionophore: NaTPB as 33: 64: 2: 1 (w/w %). The Nernstian slope calculated from the calibration curve for La 3+ sensor was 18.1 mV decade -1. The detection limit of the sensor was 3.16×10-9 M, in the linear concentration range of 1.0×10-2 -1.0×10 -8 M. Selectivity coefficients were calculated using Matched Potential Method. The interaction mechanism of the ionophore with different cations was estimated quantitatively by complex formation constant Kf values and qualitatively by FTIR spectroscopy and UV-Vis. spectrophotometry. The electrode was successfully applied to determine the fluoride content in the mouthwash and toothpaste sample.
    No preview · Article · Jun 2009 · Analytical and Bioanalytical Electrochemistry
  • Sulekh Chandra · Deepali Jain · Anjana Sarkar · Anupama
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    ABSTRACT: The newly synthesised azamacrocyclic ligand L [2,6,12,16,21,22-hexaaza-3,4, 5,13,14,15-hexamethyltricyclo-[15,3,1,17-11]-docasa-1(2,10,2,5)7,9, 11(22),12,15,17,19-decene] was prepared by the reaction of 3-methyl-2,4- pentadione and 2,6-diaminopyridine. The complexes of CuII and Ni II were synthesised with the new macrocyclic ligand. All the complexes were characterized by the molar conductance measurements, magnetic susceptibility measurements, mass, IR, electronic and EPR spectral studies. The molar conductance measurement of the complexes in DMF solution is corresponding to non-electrolytic nature. Thus these complexes may be formulated as [M(L)X2] (where, M = NiII and CuII and X = Cl- and NO3-]. On the basis of spectral studies, an octahedral geometry for NiII complexes and tetragonal for CuII complexes is assigned. The biological activity of the ligand and complexes were screened in vitro against different pathogenic fungi and several bacteria to study their comparative capacity to inhibit the growth.
    No preview · Article · Mar 2009 · Journal- Indian Chemical Society
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    ABSTRACT: Transition metal complexes of Co(II), Ni(II) and Cu(II) metal ions with general stoichiometry [M(L)X]X and [M(L)SO(4)], where M = Co(II), Ni(II) and Cu(II), L = 3,3'-thiodipropionic acid bis(4-amino-5-ethylimino-2,3-dimethyl-1-phenyl-3-pyrazoline) and X = NO(3)(-), Cl(-) and OAc(-), have been synthesized and structurally characterized by elemental analyses, molar conductance measurements, magnetic susceptibility measurements and spectral techniques like IR, UV and EPR. The nickel(II) complexes were found to have octahedral geometry, whereas cobalt(II) and copper(II) complexes were of tetragonal geometry. The covalency factor (beta) and orbital reduction factor (k) suggest the covalent nature of the complexes. The ligand and its complexes have been screened for their antifungal and antibacterial activities against three fungi, i.e. Alternaria brassicae, Aspergillus niger and Fusarium oxysporum and two bacteria, i.e. Xanthomonas compestris and Pseudomonas aeruginosa.
    Preview · Article · Feb 2009 · Molecules
  • Sulekh Chandra · Deepali Jain · Anjana Sarkar · Anupama
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    ABSTRACT: The newly synthesized azamacrocyclic ligand L [2,6,12,16,21,22-hexaaza,4,14-diethyl,3,5,13,15-tetramethyltricyclo-[15,3,1,I7-11]-docosa-1(21),2,5,7,9,11(22),12-15,17,19-decene] was prepared by the reaction of 3-ethyl-2,4-pentadione and 2,6-diaminopyridine.The complexes of Ni(II) and Cu(II) were synthesized with this ligand. All the complexes were characterized by the molar conductance measurements, magnetic susceptibility measurements, mass, I.R., electronic and EPR spectral studies. The molar conductance measurement of the complexes in DMF solution is corresponding to non-electrolytic nature. Thus these complexes may be formulated as [M(L)X2] [where, M = Ni(II) and Cu(II) and X = Cl- and NO3-]. On the basis of spectral studies, an octahedral geometry for Ni(II) complexes and tetragonal for Cu(II) complexes is assigned. The biological activity of the ligand and complexes were screened in vitro against different pathogenic fungi and several bacteria to study their comparative capacity to inhibit the growth.
    No preview · Article · Jan 2009
  • Sulekh Chandra · Deepali Jain · Amit Kumar Sharma
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    ABSTRACT: The synthesis of novel bimetallic Cu(II) complexes with general stoichiometry [Cu(2)(H(2)L)X(2)(H(2)O)(2)], [Cu(2)(H(2)L)(CH(3)COO)(2)] and [Cu(2)(H(2)L)SO(4)(H(2)O)(2)] (where H(2)L=dideprotonated ligand and X=NO(3)(-) and Cl(-)) derived from tetradentate ligand obtained by the condensation of 1,4-diformyl piperazine with carbohydrazide has been discussed. The complexes were characterized by elemental analyses, molar conductance measurements, magnetic susceptibility measurements, IR, mass, UV, EPR spectral studies and thermogravimetric analyses. The value of magnetic moments indicates that the complexes are paramagnetic and show the antiferromagnetic interaction between the two metal centres. The complexes possess the square planar coordination environment. The values of covalency measurements, i.e., in-plane sigma-bonding alpha(2), in-plane pi-bonding beta(2) and orbital reduction factor k indicate the covalent nature of complexes.
    No preview · Article · Aug 2008 · Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
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    ABSTRACT: Mononuclear complexes of manganese(II), [Mn(FaHh-DAP)X2] and chromium(III), [Cr(FaHh-DAP)X3], where X = Cl−, OAc− were prepared with the nitrogen and oxygen donor macrocyclic ligands derived from the condensation of 2,5-furandiaciddihydrazide (FaHh) with 2,6-diacetylpyridine (DAP). These complexes were characterised with the help of elemental analyses, conductivity measurements, magnetic moments, spectral and thermal studies.
    No preview · Article · Sep 2006 · Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry
  • Sulekh Chandra · Lokesh Kumar Gupta · Deepali Jain
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    ABSTRACT: Manganese(II), cobalt(II), nickel(II), and copper(II) complexes are synthesized with a novel tetradentate ligand, viz. 1,5,9,13-tetraaza-6,14-dioxo-8,16-diphenylcyclohexadecane (L) and characterized by the elemental analysis, molar conductance measurements, magnetic susceptibility measurements, mass, 1H NMR, IR, electronic, and EPR spectral studies. The molar conductance measurements of the complexes in DMSO correspond to be nonelectrolyte nature for Mn(II), Co(II), and Cu(II) whereas 1:2 electrolytes for Ni(II) complexes. Thus, these complexes may be formulated as [M(L)X(2)] and [Ni(L)]X(2), respectively (where M = Mn(II), Co(II), and Cu(II) and X = Cl- and NO(3-)). On the basis of IR, electronic, and EPR spectral studies an octahedral geometry has been assigned for Mn(II) and Co(II) complexes, square-planar for Ni(II) whereas tetragonal for Cu(II) complexes. The ligand and its complexes were also evaluated against the growth of bacteria and pathogenic fungi in vitro.
    No preview · Article · Sep 2004 · Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
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    ABSTRACT: New mononuclear iron(III), cobalt(II) and nickel(II) macrocyclic complexes of the general formulae [M(L)X2] [where M = Co(II) and Ni(II)] and [Fe(L)X2]X [L = 5,9‐dioxo‐3,4,7,10,11,17‐hexaaza‐2,11,13,15,1(17)‐N‐pentadienebicyclo[3,11,1]heptadecane; X = Cl, NO3, OAc or 0.5 SO4] were synthesized. The complexes were characterized on the basis of elemental analyses, atomic absorption, magnetic moment measurements, UV–Vis and infrared spectral studies. All the complexes were found to have octahedral geometry.
    No preview · Article · Jan 2003 · Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry