Vijoygarh Jyotish Ray College

Kolkata, India

Vijoygarh Jyotish Ray College

Kolkata, India
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Patra G.K.,Vijoygarh Jyotish Ray College | Mukherjee A.,Vijoygarh Jyotish Ray College | Mitra P.,Indian Association for The Cultivation of Science | Adarsh N.N.,Indian Association for The Cultivation of Science
Journal of Molecular Structure | Year: 2011

Three new Ag(I) complexes, 1, 2, and 3 of two azine ligands diacetyl dihydrazone (L1) and benzil dihydrazone (L2) have been synthesized and characterized by single crystal X-ray diffraction studies (for 2 and 3), X-ray powder diffraction studies(1 and 2), elemental analyses, IR and UV-VIS spectroscopy and TGA analysis. They represent one-dimensional polymeric assemblies and discrete dinuclear Ag(I) complex depending on functionality of the ligands and the counter anions. Tetrahedral as well as square pyramidal coordination motifs of the silver (I) ions have been observed in the supramolecular designing of such hybrid organic-inorganic materials. © 2011 Elsevier B.V. All rights reserved.


Pal P.K.,Vijoygarh Jyotish Ray College | Mukherjee A.,Vijoygarh Jyotish Ray College | Ghosh A.,University of Arkansas at Little Rock | Patra G.K.,Vijoygarh Jyotish Ray College | Patra G.K.,Guru Ghasidas University
Journal of Molecular Structure | Year: 2014

Synthesis of a novel, triply-interpenetrating metal-organic framework 1.H2O is described here. The coordination polymer was synthesized by simple reaction of Cu2I2 with an azino-quinoline ligand (L1). The X-ray crystal structure analysis reveals that the complex 1.H2O is a 2-D coordination polymer having (4,4′) grid network architecture. The ligand L1 possesses quinoline group and the 2-D structure of 1.H2O contains distorted cubane type Cu 4I4 SBU unit. Each of the four Cu(I) ions posses tetrahedral coordination environment. Metal-organic framework in 1.H 2O shows strong photoluminescence property at room temperature in solid state and emission spectra shows a blue shift of the peak in comparison to the free azino-quinoline ligand (L1). The coordination polymer 1.H2O was found to be stable up to 290 C. © 2013 Elsevier B.V. All rights reserved.


Pal P.K.,Vijoygarh Jyotish Ray College | Mohapatra S.,JNCASR | Jana A.D.,Behala College | Patra G.K.,Vijoygarh Jyotish Ray College | Patra G.K.,Guru Ghasidas University
Journal of Molecular Structure | Year: 2012

Two new Cd(II) complexes 1 and 2 of two pyridine azine based ligands L 1 and L 2 have been synthesized and characterized by single crystal X-ray diffraction studies, X-ray powder diffraction studies, elemental analysis, IR and UV-VIS spectroscopy. They represent two-dimensional polymeric assemblies and 1-D chain of Cd(II) complexes depending on functionality of the ligands. Octahedral as well as tetrahedral coordination motifs of the cadmium(II) ions have been observed in the supramolecular designing of such hybrid organic-inorganic hybrid materials. © 2012 Elsevier B.V. All rights reserved.


Mukherjee A.,Vijoygarh Jyotish Ray College | Dutta A.,Vijoygarh Jyotish Ray College | Jana A.D.,Behala College | Patra G.K.,Vijoygarh Jyotish Ray College | Patra G.K.,Guru Ghasidas University
Inorganica Chimica Acta | Year: 2013

Six coordination polymers, [Cu(μI)(L1)]n (1), [Cu(μI)(L2)]n (2), [Cu(μI)(L3)] n (3), [Cu(μI)(L4)]n (4), [Ag(L 4)(NO3)]n (5) and {[Ag(L5)](ClO 4)·4CH3CN)}n (6) based on coinage metals Cu(I)/Ag(I) and a set of five imino-pyridyl ligands (L1-L 5) have been synthesized. The self-assembling behaviour of the metals and the ligands and photo-physical properties of these coordination polymers have been described. Cu2I2 secondary building unit (SBU) is a robust feature of the Cu and Iodine self-assembly. This SBU along with the ligands provides 1D coordination polymers in 1, 2 and 4 and 2D coordination polymer in 3. The Ag(I) complex 5 is a helical coordination polymer and 6 is a 2D coordination polymer with (4, 4′) net architecture with rhombic grids. © 2013 Elsevier B.V.


Mukherjee A.,Vijoygarh Jyotish Ray College | Chakrabarty R.,Indian Institute of Science | Ng S.W.,University of Malaya | Patra G.K.,Vijoygarh Jyotish Ray College
Inorganica Chimica Acta | Year: 2010

Bis-bidentate Schiff base ligand L and its two mononuclear complexes [CuL(CH3CN)2]ClO4 (1) and [CuL(PPh3)2]ClO4 (2) have been prepared and thoroughly characterized by elemental analyses, IR, UV-Vis, NMR spectroscopy and X-ray diffraction analysis. In both the complexes the metal ion auxiliaries adopt tetrahedral coordination environment. Their reactivity, electrochemical and photophysical behavior have been studied. Complex 1 shows reversible CuII/I couple with potential 0.74 V versus Ag/AgCl in CH2Cl2. At room temperature L is weakly fluorescent in CH2Cl2, however in Cu(I) complexes 1 and 2 the emission in quenched. © 2009 Elsevier B.V. All rights reserved.


Fun H.-K.,Universiti Sains Malaysia | Loh W.-S.,Universiti Sains Malaysia | Patra G.K.,Vijoygarh Jyotish Ray College | Mukherjee A.,Vijoygarh Jyotish Ray College | Pal P.K.,Vijoygarh Jyotish Ray College
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title coordination polymer, [Cu 2I 2(C 14H 14N 4)(C 18H 15P) 2] n , the Cu I atom is coordinated by two I atoms, one P atom and one N atom in a fairly regular tetra-hedral arrangement. A crystallographic inversion centre generates a Cu 2I 2 diamond with a Cu-Cu separation of 3.0120 (5) Å. The complete N,N′-(1-pyridin-4-yl-ethethylidene)-hydrazine molecule is also generated by inversion symmetry, and this bridging ligand leads to [011] polymeric chains in the crystal structure.


Pal P.K.,Vijoygarh Jyotish Ray College | Banerjee A.,Vijoygarh Jyotish Ray College | Bhadra R.,Vijoygarh Jyotish Ray College | Jana A.D.,Behala College | And 2 more authors.
Journal of Coordination Chemistry | Year: 2014

An N3O Schiff base (L), 1: 1 condensate of benzil monohydrazone and 4-pyridine carboxaldehyde, and its Zn(II), Cd(II), and Ag(I) complexes were synthesized and characterized by elemental analyses and various spectroscopic techniques. The crystal structures of [ZnL2Br2] (1), [CdL2I2]·CH2Cl2, (2)·CH2Cl2, and [Ag(L)2]ClO4 (3) have been determined using X-ray crystallography. The Zn(II) and Cd(II) complexes show a tetrahedral configuration whereas in the asymmetric unit of 3, two independent coordination units of Ag(I) are present. Carbonyl-silver interaction, weak C-HO interaction, and also π-π interaction are present in 3 in the solid state. The synthesized complexes have antibacterial activity against Klebsiella pneumoniae 114, Escherichia coli K88, Salmonella typhi ATCC 34, Bacillus subtilis UC564, and Staphylococcus aureus ATCC25923. The results showed that in some cases the antibacterial activities of the complexes were comparable to standard antibiotics Tetracycline and Streptomycin. The antifungal activities of the complexes were also studied for Aspergillus Niger, Aspergillus oryzae, Penicillium notatum, and Saccharomyces cerevisiae. MIC values of 1, 2·CH2Cl2, and 3 are less than the Nystatin standard. © 2014 © 2014 Taylor & Francis.

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