0000000001309257

AUTHOR

Tiffany J. Greenfield

showing 7 related works from this author

Ferromagnetic Coupling in “Double-Bridged” Dihydrogenpyrophosphate Complexes of Cobalt(II) and Nickel(II)

2015

Three isostructural compounds of the formula {[M(bipy)(H2O)(H2P2O7)]2·2H2O} [bipy = 2,2'-bipyridine; M = Ni (1), Co (2), Mn (3)] have been isolated from aqueous solutions containing the corresponding metal(II) chloride hydrate with a bipy and sodium pyrophosphate solution in a 1:1:2 molar ratio, and their structures were determined by single-crystal X-ray diffraction. The structures of 1-3 consist of neutral aqua(2,2'-bipyridine)metal(II) dinuclear units bridged by two dihydrogenpyrophosphate groups adopting a bidentate/monodentate mode. Each metal ion in 1-3 is six-coordinate in a distorted octahedral geometry, with the reduced value of the angle subtended by the chelating bipy at the meta…

DenticityInorganic chemistrychemistry.chemical_elementMagnetic susceptibilityInorganic ChemistryCrystallographyBipyridinechemistry.chemical_compoundNickelchemistryOctahedral molecular geometryPhysical and Theoretical ChemistryIsostructuralHydrateCobaltInorganic Chemistry
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A methylenediphosphonate bridged copper(II) tetramer: Synthesis, structural, thermal, and magnetic characterization of [Cu4(H2O)2(phen)4(μ-P2O6CH2)2]…

2019

Abstract A novel tetracopper(II) complex namely, [Cu4(H2O)2(phen)4(μ-P2O6CH2)2]·21H2O (1) was synthesized by using copper(II) chloride, 1,10-phenanthroline (phen), and methylene diphosphonic acid (MDP). The structure of 1 was characterized by single crystal X-ray diffraction and spectroscopy. Compound 1 crystallizes in the triclinic system, P 1 ¯ space group and its crystal structure consists of neutral centrosymmetric tetranuclear copper(II)-methylene diphosphonate units where each peripheral {Cu(phen)(P2O6CH2)}2− fragment adopts the bidentate(Oeq-P-Oeq)/monodentate (Oax) bridging mode towards each of the two inner {Cu(phen)}2+ entities resulting in a “clamshell”-like orientation. The two …

Denticity010405 organic chemistrychemistry.chemical_elementCrystal structureTriclinic crystal system010402 general chemistry01 natural sciencesCopperSquare pyramidal molecular geometry0104 chemical sciencesInorganic Chemistrychemistry.chemical_compoundCrystallographychemistryIntramolecular forceMaterials ChemistryMoleculePhysical and Theoretical ChemistryMethylenePolyhedron
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Exploring the biological, catalytic, and magnetic properties of transition metal coordination complexes incorporating pyrophosphate

2019

Abstract Polyphosphate anions are ubiquitous in nature, none more so than the diphosphate tetra-anion P2O74−, commonly referred to as pyrophosphate (PPi). The past decade has seen a rise in the number of pyrophosphate coordination complexes synthesized and characterized, and the areas of research interest expanded to include magnetic, medicinal, nutraceutical, catalytic and bioinorganic. The aim of the present review is to collect and organize the multidisciplinary information of the inorganic pyrophosphate system paying special attention to the following points: (i) the structural diversity of the PPi-containing metal complexes from discrete species to coordination polymers, which is due t…

Low toxicity010405 organic chemistryLigandPolyphosphateBioinorganic chemistry010402 general chemistry01 natural sciencesCombinatorial chemistryPyrophosphate0104 chemical sciencesCatalysisInorganic Chemistrychemistry.chemical_compoundTransition metalchemistryMaterials ChemistryElectronic effectPhysical and Theoretical ChemistryCoordination Chemistry Reviews
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CCDC 1046978: Experimental Crystal Structure Determination

2015

Related Article: Tiffany J. Greenfield , Amanda E. Hoffman , Nadia Marino , Alan G. Goos , Francesc Lloret , Miguel Julve , and Robert P. Doyle|2015|Inorg.Chem.|54|6537|doi:10.1021/acs.inorgchem.5b00866

Space GroupCrystallographydiaqua-bis(22'-bipyridine)-bis(mu-diphosphato)-di-manganese(ii) dihydrateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1046977: Experimental Crystal Structure Determination

2015

Related Article: Tiffany J. Greenfield , Amanda E. Hoffman , Nadia Marino , Alan G. Goos , Francesc Lloret , Miguel Julve , and Robert P. Doyle|2015|Inorg.Chem.|54|6537|doi:10.1021/acs.inorgchem.5b00866

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersdiaqua-bis(22'-bipyridine)-(mu-diphosphato)(mu-diphosphato)-di-cobalt(ii) dihydrateExperimental 3D Coordinates
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CCDC 1046979: Experimental Crystal Structure Determination

2015

Related Article: Tiffany J. Greenfield , Amanda E. Hoffman , Nadia Marino , Alan G. Goos , Francesc Lloret , Miguel Julve , and Robert P. Doyle|2015|Inorg.Chem.|54|6537|doi:10.1021/acs.inorgchem.5b00866

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersdiaqua-bis(22'-bipyridine)-bis(mu-diphosphato)-di-nickel(ii) dihydrateExperimental 3D Coordinates
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CCDC 1892797: Experimental Crystal Structure Determination

2019

Related Article: Tiffany J. Greenfield, Tamra Takemoto, Joan Cano, Francesc Lloret, Miguel Julve, Jon Zubieta, Robert P. Doyle|2019|Polyhedron|169|162|doi:10.1016/j.poly.2019.05.022

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersbis(mu-methylenebis(phosphonato))-tetrakis(110-phenanthroline)-diaqua-tetra-copper(ii) hydrateExperimental 3D Coordinates
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