0000000000867556

AUTHOR

Finn K. Larsen

showing 3 related works from this author

Structural and magnetic investigations of the mixed-valence Fe(II,III) two-dimensional layer complex, [Fe2(II) Fe2(III)(HCOO)10(C6H7N)6]n.

2004

The structure of the complex, [Fe2(II)Fe2(III)(HCOO)10(C6H7N6)n, (1) exhibits a neutral two-dimensional layer network of alternating iron(II) and iron(III) ions, bridged equatorially by formate groups. All iron atoms are octahedrally coordinated, with iron(III) coordinating axially to one gamma-picoline and one formate group, while the iron(II) centers interact axially with two gamma-picoline groups, above and below the layer plane. The complex crystallizes in the triclinic space group P1 at all studied temperatures [at 120 K, the cell dimensions are: a = 10.228(1), b = 12.071(1), c = 12.072(1) A, alpha = 89.801(2), beta = 71.149(2), gamma = 73.371(2) degrees]. An intralayer antiferromagnet…

Models MolecularValence (chemistry)ChemistryStereochemistryExchange interactionTemperatureCrystal structureTriclinic crystal systemCrystallography X-RayMagnetic susceptibilityFerric CompoundsAtomic and Molecular Physics and OpticsCrystallographyMagneticsSpectroscopy MossbauerMössbauer spectroscopyOrganometallic CompoundsAntiferromagnetismMoleculeFerrous CompoundsPhysical and Theoretical ChemistryChemphyschem : a European journal of chemical physics and physical chemistry
researchProduct

Studies of a molecular hourglass: synthesis and magnetic characterisation of a cyclic dodecanuclear {Cr10Cu2} complex.

2006

The synthesis, structure, EPR, and magnetic studies of two dodecanuclear heterometallic cyclic clusters are reported. The compounds have the general formula [R(2)NH(2)](2)[Cr(10)Cu(2)F(14)(O(2)CCMe(3))(22)] (R=Me, 1 or iPr, 2). Both structures contain an array of metal centers which describe an approximate "hourglass", with an ammonium cation in the center of each half of the figure. The chromium sites are all six-coordinate, with the two copper sites five-coordinate. The majority of metal-metal edges are bridged by a single fluoride and two pivalate ligands, while two Cr--Cu edges are bridged by a single fluoride and a single pivalate. Magnetic studies show that 1 and 2 exhibit similar (bu…

ChemistryQuantum Monte CarloOrganic ChemistryGeneral ChemistryRing (chemistry)Catalysislaw.inventionCrystallographyFerromagnetismAb initio quantum chemistry methodsComputational chemistrylawExcited stateAntiferromagnetismGround stateElectron paramagnetic resonanceChemistry (Weinheim an der Bergstrasse, Germany)
researchProduct

A family of heterometallic wheels containing potentially fourteen hundred siblings

2005

The synthesis and structure of new heterometallic wheels are reported, with preliminary studies of selected compounds.

Stereochemistrymusculoskeletal neural and ocular physiologytechnology industry and agricultureMetals and AlloysMineralogyGeneral ChemistryBiologyCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialsbehavior and behavior mechanismsMaterials ChemistryCeramics and Compositeshuman activitiespsychological phenomena and processesChem. Commun.
researchProduct