0000000001304877

AUTHOR

Mainak Mitra

showing 9 related works from this author

A Bis(mu-phenoxo)-Bridged Dizinc Complex with Hydrolytic Activity

2013

The dinuclear complex [Zn2(papy)2]·2CH3OH [H2papy = N- (2-hydroxybenzyl)-N-(2-picolyl)glycine] was synthesized and characterized. The crystal structure of the complex reveals that both ZnII ions are pentacoordinate with distorted pentagonal bipyramidal coordination arrangements. The phenoxyl groups of each ligand bridge the two metal atoms, whereas each carboxylate of the ligand is terminally bound to one ZnII ion. Potentiometric studies of the ZnII:H2papy system in a methanol/water mixture show the existence of a mononuclear species at lower pH; but at a pH above 5, a dimeric species starts to dominate and transforms further into a bis(μ-phenoxo) bridged dizinc complex by deprotonation of …

ChemistryLigandStereochemistryPotentiometric titrationCrystal structureMedicinal chemistryCatalysisInorganic ChemistryMetalchemistry.chemical_compoundPentagonal bipyramidal molecular geometryDeprotonationvisual_artvisual_art.visual_art_mediumCarboxylateta116Zeitschrift für anorganische und allgemeine Chemie
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Nonheme Fe(IV) Oxo Complexes of Two New Pentadentate Ligands and Their Hydrogen-Atom and Oxygen-Atom Transfer Reactions.

2015

Two new pentadentate {N5} donor ligands based on the N4Py (N4Py = N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine) framework have been synthesized, viz. [N-(1-methyl-2-benzimidazolyl)methyl-N-(2-pyridyl)methyl-N-(bis-2-pyridyl methyl)amine] (L1) and [N-bis(1-methyl-2-benzimidazolyl)methyl-N-(bis-2-pyridylmethyl)amine] (L2), where one or two pyridyl arms of N4Py have been replaced by corresponding (N-methyl)benzimidazolyl-containing arms. The complexes [FeII(CH3CN)(L)]2+ (L = L1 (1); L2 (2)) were synthesized, and reaction of these ferrous complexes with iodosylbenzene led to the formation of the ferryl complexes [FeIV(O)(L)]2+ (L = L1 (3); L2 (4)), which were characterized by UV–vis spe…

Ligand field theoryModels MolecularStereochemistryPyridinesIronMolecular ConformationSulfidesIron compoundsLigandsMedicinal chemistryRedoxReaccions químiquesInorganic Chemistrychemistry.chemical_compoundChemical reactionsMössbauer spectroscopyElectrochemistryOrganometallic Compoundspentadentate ligandsPhysical and Theoretical ChemistrySpectroscopyta116LigandChemistryMethylamineFerro -- CompostosHydrogen atomOxygeniron complexesAmine gas treatingOxidation-ReductionHydrogenInorganic chemistry
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Evidence that steric factors modulate reactivity of tautomeric iron-oxo species in stereospecific alkane C-H hydroxylation

2014

A new iron complex mediates stereospecific hydroxylation of alkyl C-H bonds with hydrogen peroxide, exhibiting excellent efficiency. Isotope labelling studies provide evidence that the relative reactivity of tautomerically related oxo-iron species responsible for the C-H hydroxylation reaction is dominated by steric factors This work has been supported by the European Union (the Erasmus Mundus program), the International Research Training Group Metal Sites in Biomolecules: Structures, Regulation and Mechanisms (www.biometals.eu), and COST Action CM1003. M.C. acknowledges ERC-29910, MINECO of Spain for CTQ2012- 37420-C02-01/BQU and CSD2010-00065, catalan DIUE (2009SGR637) and an ICREA academ…

Steric effectsStereochemistryIronrautaHydroxylationOxidacióIron compoundsCatalysisCatalysisHydroxylationchemistry.chemical_compoundStereospecificityCatàlisiCoordination ComplexesAlkanesOxidationMaterials ChemistryReactivity (chemistry)Hydrogen peroxideta116Alkylchemistry.chemical_classificationMolecular StructurekoordinaatioyhdisteetMetals and AlloysStereoisomerismcoordination compundsFerro -- CompostosGeneral ChemistryHydrogen PeroxideTautomer3. Good healthSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialschemistryCeramics and CompositesOxygenases
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CCDC 1418388: Experimental Crystal Structure Determination

2015

Related Article: Mainak Mitra , Hassan Nimir , Serhiy Demeshko , Satish S. Bhat , Sergey O. Malinkin , Matti Haukka , Julio Lloret-Fillol , George C. Lisensky , Franc Meyer , Albert A. Shteinman , Wesley R. Browne , David A. Hrovat , Michael G.Richmond , Miquel Costas , Ebbe Nordlander|2015|Inorg.Chem.|54|7152|doi:10.1021/ic5029564

(NN-bis((1-Methyl-1H-benzimidazol-2-yl)methyl)-11-bis(pyridin-2-yl)methanamine)-methanol-iron diperchlorateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 960139: Experimental Crystal Structure Determination

2013

Related Article: Mainak Mitra, Julio Lloret-Fillol, Matti Haukka, Miquel Costas, Ebbe Nordlander|2014|Chem.Commun.|50|1408|doi:10.1039/C3CC47830K

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates(2-((47-Dimethyl-147-triazonan-1-yl)methyl)-1-methyl-1H-benzimidazole)-bis(trifluoromethanesulfonato)-iron(ii)
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CCDC 1033835: Experimental Crystal Structure Determination

2017

Related Article: Mainak Mitra , Hassan Nimir , Serhiy Demeshko , Satish S. Bhat , Sergey O. Malinkin , Matti Haukka , Julio Lloret-Fillol , George C. Lisensky , Franc Meyer , Albert A. Shteinman , Wesley R. Browne , David A. Hrovat , Michael G.Richmond , Miquel Costas , Ebbe Nordlander|2015|Inorg.Chem.|54|7152|doi:10.1021/ic5029564

Space GroupCrystallography(acetonitrile)-(NN-bis[(1-methyl-1H-benzimidazol-2-yl)methyl]-11-bis(pyridin-2-yl)methanamine)-iron diperchlorate acetonitrile solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 927054: Experimental Crystal Structure Determination

2013

Related Article: Mainak Mitra, Reena Singh, Monika Pyrkosz-Bulska, Matti Haukka, Elzbieta Gumienna-Kontecka, Ebbe Nordlander|2013|Z.Anorg.Allg.Chem.|639|1534|doi:10.1002/zaac.201300160

Space GroupCrystallographyCrystal SystemCrystal Structurebis(mu~2~-((2-Oxidobenzyl)(pyridin-2-ylmethyl)amino)acetato)-di-zinc(ii) methanol solvateCell ParametersExperimental 3D Coordinates
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CCDC 960138: Experimental Crystal Structure Determination

2013

Related Article: Mainak Mitra, Julio Lloret-Fillol, Matti Haukka, Miquel Costas, Ebbe Nordlander|2014|Chem.Commun.|50|1408|doi:10.1039/C3CC47830K

Diaqua-(2-((47-dimethyl-147-triazonan-1-yl)methyl)-1-methyl-1H-benzimidazole)-iron(ii) bis(trifluoromethanesulfonate)Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 994961: Experimental Crystal Structure Determination

2015

Related Article: Mainak Mitra , Hassan Nimir , Serhiy Demeshko , Satish S. Bhat , Sergey O. Malinkin , Matti Haukka , Julio Lloret-Fillol , George C. Lisensky , Franc Meyer , Albert A. Shteinman , Wesley R. Browne , David A. Hrovat , Michael G.Richmond , Miquel Costas , Ebbe Nordlander|2015|Inorg.Chem.|54|7152|doi:10.1021/ic5029564

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parameters(acetonitrile)-(N-((1-methyl-1H-benzimidazol-2-yl)methyl)-11-bis(pyridin-2-yl)-N-((pyridin-2-yl)methyl)methanamine)-iron diperchlorate acetonitrile solvateExperimental 3D Coordinates
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