0000000000620118

AUTHOR

Anik Bhattacharyya

showing 16 related works from this author

Synthesis, characterization and self-assembly of three dicyanamide bridged polynuclear copper(II) complexes with N2O donor tridentate Schiff bases as…

2016

Three copper(II) complexes [Cu(L1)(μ1,5-dca)]n (1), [Cu(L2)(μ1,5-dca)]n (2) and [Cu(L3)(μ1,5-dca)]n (3) [where HL1 = (1-(2-(dimethylamino)ethylimino)ethyl) naphthalene-1-ol, HL2 = (1-(2-(methylamino)ethylimino)ethyl) naphthalene-1-ol and HL3 = (1-(2-(ethylamino)ethylimino)ethyl)naphthalene-1-ol] have been synthesized and characterized by elemental analysis, IR and UV–Vis spectroscopy. The structure of each complex has been confirmed by single-crystal X-ray diffraction studies. In all three complexes, copper(II) centres are bridged by dicyanamide in end to end fashion. Complexes 1 and 2 are zigzag polymers, whereas complex 3 is a helical one. The weak forces like C–H⋯π and π⋯π interactions i…

crystal structureStereochemistrychemistry.chemical_elementCrystal structure010402 general chemistry01 natural sciencesInorganic Chemistrychemistry.chemical_compoundpolynuclearMaterials ChemistryPhysical and Theoretical ChemistrySpectroscopyta116DicyanamidedicyanamideSchiff base010405 organic chemistryChemistryschiff baseCopper0104 chemical sciencesMolecular networkCrystallographySelf-assemblycopper(II)Polyhedron
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Field-induced ferromagnetism due to magneto-striction in 1-D helical chains

2016

Two homochiral copper(II) helices, [Cu(μ1,3-N3)(L1)]n (1) and [Cu(μ1,3-NCO)(L2)]n (2), with end-to-end pseudohalide bridges, were synthesized using two N2O donor achiral Schiff bases via spontaneous chiral resolution. Field-induced ferromagnetic ordering due to magneto-striction in homochiral 1-D helix [Cu(μ1,3-N3)(L1)]n (1) is reported for the first time. At temperatures below 5.5 K, under a magnetic field of 1 T, orthogonality between the magnetic orbitals of copper centres increases significantly due to the contraction of lattice parameters, giving rise to long-range ferromagnetic ordering in the helical chain. The magneto-dielectric results are also indicative of the observed magneto-st…

Quantitative Biology::BiomoleculesCondensed matter physicsChemistryGeneral Chemical Engineeringchemistry.chemical_element02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciencesCopperChiral resolutionHelical chain0104 chemical sciencesMagnetic fieldfield-induced ferromagnetismCrystallographyFerromagnetismAtomic orbitalLattice (order)Helix0210 nano-technologyta116RSC Advances
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Formation of a novel ferromagnetic end-to-end cyanate bridged homochiral helical copper(ii) Schiff base complex via spontaneous symmetry breaking

2014

A homochiral helical coordination polymer of copper(II) has been synthesized using achiral precursors via spontaneous symmetry breaking and has been confirmed by single crystal X-ray diffraction and solid-state CD spectroscopy. The variable temperature magnetic measurements indicate the presence of weak ferromagnetic exchange interactions mediated by end-to-end cyanate bridges (J = +0.12 cm(-1)).

Circular dichroismSchiff baseStereochemistryChemistryCoordination polymerSpontaneous symmetry breakingchemistry.chemical_elementcircular dichroism spectroscopyCyanateferromagnetismsingle crystalsCopperX-ray diffractionInorganic ChemistryCrystallographychemistry.chemical_compoundfunctional groupsFerromagnetismcopperferromagnetic materialsta116Single crystalDalton Transactions
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Synthesis, characterization and magnetic study of two new octahedral iron(III) complexes with pendant zwitterionic Schiff bases

2016

Two Schiff bases, HL1 [2-((3-(dimethylamino)propylimino)methyl)-5-bromophenol] and HL2 [2-((2-(diethylamino)ethylimino)methyl)-6-methoxyphenol], have been employed to prepare two new octahedral iron(III) complexes, [Fe(HL1)2(N3)2]ClO4·2H2O (1) and [Fe(HL2)2(NCS)2]ClO4·H2O (2). Both complexes are characterized by spectral and elemental analyses. Single crystal X-ray diffraction studies confirm their structures. In both complexes, Schiff bases are trapped in their zwitterionic forms and coordinated to iron(III) only through the imine nitrogen and phenoxo oxygen, i.e., they behave as bi-dentate ligands, keeping the remaining potential donor sites pendant. The measurement of χM vs. T for both c…

crystal structurevariable temperature magnetic susceptibilityIminechemistry.chemical_elementCrystal structure010402 general chemistry01 natural sciencesOxygenzwiterionicInorganic Chemistrypendantchemistry.chemical_compoundMaterials ChemistryOrganic chemistryPhysical and Theoretical ChemistryMagnetic studyta116010405 organic chemistryNitrogen0104 chemical sciencesCrystallographychemistryOctahedronPotential donorSingle crystaliron(III)Inorganica Chimica Acta
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CCDC 1053244: Experimental Crystal Structure Determination

2016

Related Article: Bikash Kumar Shaw, Mithun Das, Anik Bhattacharyya, Biswa Nath Ghosh, Susmita Roy, Prabhat Mandal, Kari Rissanen, Shouvik Chattopadhyay, Shyamal Kumar Saha|2016|RSC Advances|6|22980|doi:10.1039/C5RA27040E

Space GroupCrystallographyCrystal Systemcatena-[(2-(1-((2-(dimethylamino)ethyl)imino)ethyl)-1-naphtholato)-(mu-azido)-copper(ii)]Crystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1019456: Experimental Crystal Structure Determination

2014

Related Article: Anik Bhattacharyya, Biswa Nath Ghosh, Santiago Herrero, Kari Rissanen, Reyes Jiménez-Aparicio, Shouvik Chattopadhyay|2015|Dalton Trans.|44|493|doi:10.1039/C4DT03166K

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinatescatena-[(mu-cyanato)-(2-(1-((2-(dimethylamino)ethyl)imino)ethyl)-1-naphtholato)-copper(ii)]
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CCDC 1406302: Experimental Crystal Structure Determination

2016

Related Article: Subrata Jana, Anik Bhattacharyya, Biswa Nath Ghosh, Kari Rissanen, Santiago Herrero, Reyes Jiménez-Aparicio, Shouvik Chattopadhyay|2016|Inorg.Chim.Acta|453|715|doi:10.1016/j.ica.2016.09.005

Space GroupCrystallographybis(NN-diethyl-2-((2-oxy-3-methoxybenzylidene)amino)ethanaminiumato)-bis(isothiocyanato)-iron(iii) perchlorate monohydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1406301: Experimental Crystal Structure Determination

2016

Related Article: Subrata Jana, Anik Bhattacharyya, Biswa Nath Ghosh, Kari Rissanen, Santiago Herrero, Reyes Jiménez-Aparicio, Shouvik Chattopadhyay|2016|Inorg.Chim.Acta|453|715|doi:10.1016/j.ica.2016.09.005

Space GroupCrystallographydiazido-bis(3-((5-bromo-2-oxybenzylidene)amino)-NN-dimethylpropan-1-aminium)-iron(iii) perchlorate dihydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1024471: Experimental Crystal Structure Determination

2014

Related Article: Bikash Kumar Shaw, Mithun Das, Anik Bhattacharyya, Biswa Nath Ghosh, Susmita Roy, Prabhat Mandal, Kari Rissanen, Shouvik Chattopadhyay, Shyamal Kumar Saha|2016|RSC Advances|6|22980|doi:10.1039/C5RA27040E

Space GroupCrystallographyCrystal Systemcatena-[(2-(1-((2-(dimethylamino)ethyl)imino)ethyl)-1-naphtholato)-(mu-azido)-copper(ii)]Crystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1053245: Experimental Crystal Structure Determination

2016

Related Article: Bikash Kumar Shaw, Mithun Das, Anik Bhattacharyya, Biswa Nath Ghosh, Susmita Roy, Prabhat Mandal, Kari Rissanen, Shouvik Chattopadhyay, Shyamal Kumar Saha|2016|RSC Advances|6|22980|doi:10.1039/C5RA27040E

Space GroupCrystallographyCrystal Systemcatena-[(2-(1-((2-(dimethylamino)ethyl)imino)ethyl)-1-naphtholato)-(mu-azido)-copper(ii)]Crystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1053247: Experimental Crystal Structure Determination

2016

Related Article: Bikash Kumar Shaw, Mithun Das, Anik Bhattacharyya, Biswa Nath Ghosh, Susmita Roy, Prabhat Mandal, Kari Rissanen, Shouvik Chattopadhyay, Shyamal Kumar Saha|2016|RSC Advances|6|22980|doi:10.1039/C5RA27040E

Space GroupCrystallographycatena-[(1-(((2-(dimethylamino)ethyl)imino)methyl)-2-naphtholato)-(mu-cyanato)-copper(ii)]Crystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1412636: Experimental Crystal Structure Determination

2016

Related Article: Anik Bhattacharyya, Biswa Nath Ghosh, Kari Rissanen, Shouvik Chattopadhyay|2016|Polyhedron|117|138|doi:10.1016/j.poly.2016.04.037

Space GroupCrystallographyCrystal Systemcatena-[(mu-dicyanamido)-(2-(1-((2-(ethylamino)ethyl)imino)ethyl)-1-naphtholato)-copper(ii)]Crystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1053243: Experimental Crystal Structure Determination

2016

Related Article: Bikash Kumar Shaw, Mithun Das, Anik Bhattacharyya, Biswa Nath Ghosh, Susmita Roy, Prabhat Mandal, Kari Rissanen, Shouvik Chattopadhyay, Shyamal Kumar Saha|2016|RSC Advances|6|22980|doi:10.1039/C5RA27040E

Space GroupCrystallographyCrystal Systemcatena-[(2-(1-((2-(dimethylamino)ethyl)imino)ethyl)-1-naphtholato)-(mu-azido)-copper(ii)]Crystal StructureCell ParametersExperimental 3D Coordinates
researchProduct

CCDC 1024473: Experimental Crystal Structure Determination

2014

Related Article: Bikash Kumar Shaw, Mithun Das, Anik Bhattacharyya, Biswa Nath Ghosh, Susmita Roy, Prabhat Mandal, Kari Rissanen, Shouvik Chattopadhyay, Shyamal Kumar Saha|2016|RSC Advances|6|22980|doi:10.1039/C5RA27040E

catena-[(mu-cyanato)-(1-(((2-(dimethylamino)ethyl)imino)methyl)-2-naphtholato)-copper(ii)]Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1409357: Experimental Crystal Structure Determination

2016

Related Article: Anik Bhattacharyya, Biswa Nath Ghosh, Kari Rissanen, Shouvik Chattopadhyay|2016|Polyhedron|117|138|doi:10.1016/j.poly.2016.04.037

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterscatena-[(mu-dicyanamido)-(2-(1-((2-(methylamino)ethyl)imino)ethyl)-1-naphtholato)-copper(ii)]Experimental 3D Coordinates
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CCDC 1409356: Experimental Crystal Structure Determination

2016

Related Article: Anik Bhattacharyya, Biswa Nath Ghosh, Kari Rissanen, Shouvik Chattopadhyay|2016|Polyhedron|117|138|doi:10.1016/j.poly.2016.04.037

catena-[(mu-dicyanamido)-(2-(1-((2-(dimethylamino)ethyl)imino)ethyl)-1-naphtholato)-copper(ii)]Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
researchProduct