0000000001300092

AUTHOR

Vadapalli Chandrasekhar

showing 18 related works from this author

Synthesis, Structure, and Magnetic Properties of a Family of Heterometallic Pentanuclear [Co 4 Ln] (Ln = Gd III , Dy III , Tb III , and Ho III ) Asse…

2013

The reaction of 6-formyl-2-(hydroxymethyl)-4-methylphenol (LH2) with appropriate lanthanide salts followed by reaction with Co(OAc)2·4H2O afforded the pentanuclear heterobimetalllic compounds [Co4Ln(L)4(OAc)2(S)4](NO3)(S) [LnIII = GdIII, S = MeOH (1); LnIII = DyIII, S = H2O (2); LnIII = TbIII, S = MeOH (3); LnIII = HoIII, S = MeOH (4)] in good yields. All the compounds are stable in solution as confirmed by ESI-MS studies. These complexes contain a distorted Co4 tetrahedral core, which encapsulates a central lanthanide ion. The CoII and LnIII ions are in an all-oxygen environments. All the CoII ions possess a distorted octahedral geometry, and the LnIII ions are in a distorted square-antipr…

Inorganic ChemistryLanthanideCrystallographychemistry.chemical_compoundChemistryStereochemistryOctahedral molecular geometryAntiferromagnetismHydroxymethylAtmospheric temperature rangeMagnetic interactionIonEuropean Journal of Inorganic Chemistry
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A hexaicosametallic copper(ii) phosphonate

2013

Structure and characterization of [Cu26{2,3,5,6-(Me)4C6H-CH2-PO3}18(μ2-OH)4(μ3-OH)6(μ4-Cl)6(μ-OH2)2(OH2)2(MeCN)4]·6MeCN·15H2O (1) is reported. Complex 1 is the largest discrete molecular homometallic transition metal phosphonate assembly. Remarkably, this gigantic molecular phosphonate has been prepared at room temperature using a normal solution synthetic method.

Inorganic Chemistrychemistry.chemical_compoundchemistryTransition metalInorganic chemistrychemistry.chemical_elementNormal solutionPhosphonateCopperDalton Transactions
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S-shaped decanuclear heterometallic [Ni8Ln2] complexes [Ln(iii) = Gd, Tb, Dy and Ho]: theoretical modeling of the magnetic properties of the gadolini…

2014

The reaction of 8-quinolinol-2-carboaldoxime (LH2) with Ni(II) and Ln(III) salts afforded the heterometallic decanuclear compounds [Ni8Dy2(μ3-OH)2(L)8(LH)2(H2O)6](ClO4)2·16H2O (1), [Ni8Gd2(μ3-OH)2(L)8(LH)2(H2O)4(MeOH)2](NO3)2·12H2O (2), [Ni8Ho2(μ3-OH)2(L)8(LH)2(H2O)4(MeOH)2](ClO4)2·2MeOH·12H2O (3) and [Ni8Tb2 (μ3-OH)2(L)8(LH)2(MeOH)4(OMe)2]·2CH2Cl2·8H2O (4). While compounds 1-3 are dicationic, compound 4 is neutral. These compounds possess an S-shaped architecture and comprise a long chain of metal ions bound to each other. In all the complexes, the eight Ni(II) and two Ln(III) ions of the multimetallic ensemble are hold together by two μ3-OH, eight dianionic (L(2-)) and two monoanionic oxi…

StereochemistryGadoliniumMetal ions in aqueous solutionchemistry.chemical_elementOximeIonInorganic Chemistrychemistry.chemical_compoundMolecular wireCrystallographychemistryFerromagnetismAntiferromagnetismDerivative (chemistry)Dalton Trans.
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Heterometallic Pentanuclear [Ni 4 Ln] (Ln III = Gd, Tb, Dy, Ho) Complexes: Accidental Orthogonality Leading to Ferromagnetic Interactions

2014

The reaction of 6-formyl-2-(hydroxymethyl)-4-methylphenol (LH2) with NiII and LnIII salts afforded a series of heterometallic pentanuclear compounds [Ni4Ln(L)4(OAc)2(MeOH)4](NO3)(MeOH) [LnIII = Gd (1), Dy (2), Tb (3), Ho (4)]. Four dianionic L2– ligands and two acetate anions hold together four NiII and one LnIII ion to form a Ni4Ln core possessing a distorted tetrahedral geometry. All the NiII ions are hexacoordinate (6 O) with a distorted octahedral geometry whereas the LnIII ion is octacoordinate (8 O) with a distorted square-antiprism geometry. All the NiII ions are connected to the central LnIII ion through μ2 bridging of one deprotonated phenolic oxygen and two deprotonated alkoxy oxy…

Inorganic ChemistryLanthanidechemistry.chemical_compoundCrystallographyDeprotonationChemistryInorganic chemistryOctahedral molecular geometryAlkoxy groupHexacoordinateTetrahedral molecular geometryHydroxymethylIonEuropean Journal of Inorganic Chemistry
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CCDC 892148: Experimental Crystal Structure Determination

2013

Related Article: Vadapalli Chandrasekhar, Dipankar Sahoo, Ramakirushnan Suriya Narayanan, Raymond J. Butcher, Franscesc Lloret, Emilio Pardo|2013|Dalton Trans.|42|8192|doi:10.1039/c3dt00103b

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinateshexakis(mu5-(2356-Tetramethylbenzyl)phosphonato)-bis(mu4-chloro)-hexakis(mu5-(2356-tetramethylbenzyl)phosphonato)-hexakis(mu3-hydroxo)-bis(mu3-chloro)-tetrakis(mu2-hydroxo)-bis(mu2-aquo)-bis(mu2-chloro)-tetrtakis(acetonitrile)-di-aqua-hexacosa-copper(ii)
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CCDC 927026: Experimental Crystal Structure Determination

2013

Related Article: Vadapalli Chandrasekhar, Sourav Das, Atanu Dey, Sakiat Hossain, Francesc Lloret, Emilio Pardo|2013|Eur.J.Inorg.Chem.||4506|doi:10.1002/ejic.201300413

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(mu2-acetato)-tetrakis(mu4-2-hydroxy-3-(hydroxymethyl)-5-methylbenzaldehyde)-tetraaqua-tetra-cobalt-dysprosium nitrate dihydrateExperimental 3D Coordinates
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CCDC 987982: Experimental Crystal Structure Determination

2014

Related Article: Sourav Das, Sakiat Hossain, Atanu Dey, Sourav Biswas, Emilio Pardo, Francesc Lloret, Vadapalli Chandrasekhar|2014|Eur.J.Inorg.Chem.||3393|doi:10.1002/ejic.201402195

Space GroupCrystallographytetrakis(mu-2-formyl-4-methyl-6-(oxidomethyl)phenolato)-bis(mu-acetato)-tetrakis(methanol)-tetra-nickel-gadolinium nitrate methanol solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 986609: Experimental Crystal Structure Determination

2014

Related Article: Sakiat Hossain, Sourav Das, Amit Chakraborty, Francesc Lloret, Joan Cano, Emilio Pardo, Vadapalli Chandrasekhar|2014|Dalton Trans.|43|10164|doi:10.1039/C4DT00465E

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametershexakis(mu~4~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-hydroxo)-bis(2-[(hydroxyimino)methyl]quinolin-8-olate)-hexa-aqua-di-dysprosium-octa-nickel diperchlorate hexadecahydrateExperimental 3D Coordinates
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CCDC 927025: Experimental Crystal Structure Determination

2013

Related Article: Vadapalli Chandrasekhar, Sourav Das, Atanu Dey, Sakiat Hossain, Francesc Lloret, Emilio Pardo|2013|Eur.J.Inorg.Chem.||4506|doi:10.1002/ejic.201300413

Space GroupCrystallographybis(mu~2~-acetato)-tetrakis(mu~4~-2-hydroxy-3-(hydroxymethyl)-5-methylbenzaldehyde)-tetrakis(methanol)-tetra-cobalt-gadolinium nitrate methanol solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 986612: Experimental Crystal Structure Determination

2014

Related Article: Sakiat Hossain, Sourav Das, Amit Chakraborty, Francesc Lloret, Joan Cano, Emilio Pardo, Vadapalli Chandrasekhar|2014|Dalton Trans.|43|10164|doi:10.1039/C4DT00465E

Space GroupCrystallographyCrystal SystemCrystal Structurehexakis(mu~4~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-hydroxo)-bis(2-[(hydroxyimino)methyl]quinolin-8-olate)-dimethoxo-tetrakis(methanol)-di-terbium-octa-nickel dichloromethane solvate octahydrateCell ParametersExperimental 3D Coordinates
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CCDC 987985: Experimental Crystal Structure Determination

2014

Related Article: Sourav Das, Sakiat Hossain, Atanu Dey, Sourav Biswas, Emilio Pardo, Francesc Lloret, Vadapalli Chandrasekhar|2014|Eur.J.Inorg.Chem.||3393|doi:10.1002/ejic.201402195

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterstetrakis(mu-2-(oxymethyl)-4-methyl-6-formylphenolato)-bis(mu-acetato)-tetrakis(methanol)-holmium-tetra-nickel nitrate methanol solvateExperimental 3D Coordinates
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CCDC 987983: Experimental Crystal Structure Determination

2014

Related Article: Sourav Das, Sakiat Hossain, Atanu Dey, Sourav Biswas, Emilio Pardo, Francesc Lloret, Vadapalli Chandrasekhar|2014|Eur.J.Inorg.Chem.||3393|doi:10.1002/ejic.201402195

Space GroupCrystallographytetrakis(mu-2-(oxymethyl)-4-methyl-6-formylphenolato)-bis(mu-acetato)-tetrakis(methanol)-dysprosium-tetra-nickel nitrate methanol solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 986611: Experimental Crystal Structure Determination

2014

Related Article: Sakiat Hossain, Sourav Das, Amit Chakraborty, Francesc Lloret, Joan Cano, Emilio Pardo, Vadapalli Chandrasekhar|2014|Dalton Trans.|43|10164|doi:10.1039/C4DT00465E

Space GroupCrystallographyCrystal Systemhexakis(mu~4~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-hydroxo)-bis(2-[(hydroxyimino)methyl]quinolin-8-olate)-dimethanol-tetra-aqua-di-holmium-octa-nickel diperchlorate undecahydrateCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 972777: Experimental Crystal Structure Determination

2014

Related Article: Samia Benmansour, Eugenio Coronado, Carlos Giménez-Saiz, Carlos J. Gómez-García, Carola Rößer|2014|Eur.J.Inorg.Chem.||3949|doi:10.1002/ejic.201402023

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametershexakis(triethylammonium) bis(mu~4~-(2356-tetramethylbenzyl)phosphonato)-hexakis(mu~3~-(2356-tetramethylbenzyl)phosphonato)-tetrakis(mu~2~-hydrogen (2356-tetramethylbenzyl)phosphonato)-hexachloro-deca-cobalt hexane solvate hexadecahydrateExperimental 3D Coordinates
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CCDC 987984: Experimental Crystal Structure Determination

2014

Related Article: Sourav Das, Sakiat Hossain, Atanu Dey, Sourav Biswas, Emilio Pardo, Francesc Lloret, Vadapalli Chandrasekhar|2014|Eur.J.Inorg.Chem.||3393|doi:10.1002/ejic.201402195

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameterstetrakis(mu-2-(oxymethyl)-4-methyl-6-formylphenolato)-bis(mu-acetato)-tetrakis(methanol)-terbium-tetra-nickel nitrate methanol solvateExperimental 3D Coordinates
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CCDC 927027: Experimental Crystal Structure Determination

2013

Related Article: Vadapalli Chandrasekhar, Sourav Das, Atanu Dey, Sakiat Hossain, Francesc Lloret, Emilio Pardo|2013|Eur.J.Inorg.Chem.||4506|doi:10.1002/ejic.201300413

Space GroupCrystallographyCrystal Systembis(mu~2~-acetato)-tetrakis(mu~4~-2-hydroxy-3-(hydroxymethyl)-5-methylbenzaldehyde)-tetrakis(methanol)-tetra-cobalt-terbium nitrate methanol solvateCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 986610: Experimental Crystal Structure Determination

2014

Related Article: Sakiat Hossain, Sourav Das, Amit Chakraborty, Francesc Lloret, Joan Cano, Emilio Pardo, Vadapalli Chandrasekhar|2014|Dalton Trans.|43|10164|doi:10.1039/C4DT00465E

Space GroupCrystallographyhexakis(mu~4~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-2-[(oxidoimino)methyl]quinolin-8-olato)-bis(mu~3~-hydroxo)-bis(2-[(hydroxyimino)methyl]quinolin-8-olate)-dimethanol-tetra-aqua-di-gadolinium-octa-nickel dinitrate dodecahydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 927028: Experimental Crystal Structure Determination

2013

Related Article: Vadapalli Chandrasekhar, Sourav Das, Atanu Dey, Sakiat Hossain, Francesc Lloret, Emilio Pardo|2013|Eur.J.Inorg.Chem.||4506|doi:10.1002/ejic.201300413

Space GroupCrystallographybis(mu~2~-acetato)-tetrakis(mu~4~-2-hydroxy-3-(hydroxymethyl)-5-methylbenzaldehyde)-tetrakis(methanol)-tetra-cobalt-holmium nitrate methanol solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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