0000000000214807

AUTHOR

Amanda E. Hoffman

showing 5 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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Synthesis, structural, thermal, and magnetic investigations of Co(II), Ni(II), and Mn(II) pyrophosphate chains

2012

The reaction in water of cobalt(II), nickel(II) or manganese(II) chloride with 1,10-phenanthroline (phen) and sodium pyrophosphate (Na 4 P 2 O 7 ) at low pH (∼2) afforded three isostructural pyrophosphate complexes of an unprecedented one-dimensional typology, namely, {[M(phen)(H 2 O)(H 2 P 2 O 7 )]·H 2 O} n with M = Co( 1 ), Ni( 2 ) and Mn( 3 ). The di-hydrogen-pyrophosphate anion featured in these complexes adopts a rare bidentate/monodentate bridging mode leading to chain propagation. This unusual bridging pathway produces a metal–metal intra-chain separation of about 6.6–6.7 A for 1 – 3 , values much larger than the metal–metal distance across the classic bis-bidentate PPi in the parent…

DenticityChain propagationStereochemistrychemistry.chemical_elementManganeseMagnetic susceptibilityPyrophosphateInorganic ChemistryNickelCrystallographychemistry.chemical_compoundchemistryMaterials ChemistryPhysical and Theoretical ChemistryIsostructuralCobaltInorganica Chimica Acta
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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
researchProduct