0000000000240328

AUTHOR

F. Bérézovsky

showing 4 related works from this author

Molecular hybrids formed by oxalate bridged dinuclear anions and organometallic cations

1999

Abstract The syntheses, magnetic properties and infrared spectra of a new series of molecular hybrids formed by association of two magnetic sublattices: (i) oxalate bridged dinuclear anions [V 2 O 2 (ox)(NCS) 6 ] 4− and [M′M′'(ox)(NCS) 8 ] 4 ( M′= Fe III , Cr III ; M′' - Fe III , Cr III ; ox 2 = C 2 O 4 2 and (ii) decamethylferrocenium organometallic cation are presented. The crystal structure of [Fe(Cp * ) 2 ][(C 2 H 5 ) 4 N] 2 [V 2 O 2 (ox)(NCS) 6 ] is also discussed.

Magnetic measurementsStereochemistryChemistryMechanical EngineeringMetals and AlloysInfrared spectroscopychemistry.chemical_elementCrystal structureCondensed Matter PhysicsMagnetic susceptibilityOxalateElectronic Optical and Magnetic MaterialsCrystallographyChromiumchemistry.chemical_compoundMechanics of MaterialsMaterials ChemistryMoleculeSynthetic Metals
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Molecular materials based upon organic π-donors and magnetic anions

2000

Electrochemical combination of the magnetic dinuclear anion [MM'(C 2 O 4 )(NCS) 8 ] 4- (MM' = CrCr, CrFe) or paramagnetic mononuclear anion [Cr(NCS) 6 ] 3- with the ET organic π-donor (ET = BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene) gives rise to two new series of molecular hybrid salts formulated (ET) 5 [MM'(C 2 O 4 )(NCS) 8 (MM' = CrCr (1), CrFe (2)), (ET) 8 [MM'(C 2 O 4 )(NCS) 8 ] (3), (ET) 5.5 f Cr(NCS) 6 ] (4) and (ET) 5 [(C 2 H 5 ) 4 N] [Cr(NCS) 6 ](THF) (5) (THF = tetrahydrofuran). The crystal structures consist of alternating organic and inorganic layers. The organic part does not produce any detectable effect on the magnetic properties coming from the inorganic sublattice. T…

010405 organic chemistryStereochemistryGeneral Physics and AstronomyCrystal structure010402 general chemistryElectrochemistry01 natural sciencesMagnetic susceptibility0104 chemical sciencesMetalParamagnetismchemistry.chemical_compoundCrystallographychemistryvisual_art[CHIM] Chemical Sciencesvisual_art.visual_art_mediumMolecule[CHIM]Chemical SciencesTetrathiafulvaleneTetrahydrofuran
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Radical cation salts based on BEDT-TTF and the paramagnetic anion [Cr(NCS)6]3−

1999

Abstract A new radical cation salt formulated as (ET)5.5[Cr(NCS)6] (ET = BEDT-TTF = bis(ethylene)dithiotetrathiafulvalene) has been synthesised and characterised by X-ray diffraction and magnetic measurements. The structure shows the presence of alternating layers of the ET units and mixed layers of anions and an isolated ET molecule. The magnetic susceptibility data in the temperature range 2–300 K show a Curie law with C = 1.771 cm3.K.mol−1 and Nα = 1.20.10−5 cm3.mol−1, in agreement with the presence of isolated Cr(III) without any contribution from the organic part.

chemistry.chemical_classificationStereochemistryMechanical EngineeringMetals and AlloysSalt (chemistry)Atmospheric temperature rangeCondensed Matter PhysicsMagnetic susceptibilityElectronic Optical and Magnetic MaterialsIonParamagnetismCurie's lawCrystallographychemistryRadical ionMechanics of MaterialsMaterials ChemistryMoleculeSynthetic Metals
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New charge transfer salts of two organic π-donors of the tetrathiafulvalene type with the paramagnetic [Cr(NCS)6]3- anion

2003

cited By 9; International audience; The electrochemical combination of the paramagnetic anion [Cr(NCS)6]3- with the organic π-donors bis(ethylenedithio)tetrathiafulvalene (ET) and 4,5-bis(2-hydroxyethylthio) -4′,5′-ethylenedithiotetrathiafulvalene (DHET-EDTTTF) leads to two new radical cation salts, namely (ET)4 [Cr(NCS 6]·PhCN 1 and (DHET-EDTTTF)2 (NEt4)[Cr(NCS)6] 2. Both have been characterized by X-ray crystallography, magnetic and resistivity measurements. The structure of 1 consists of alternating inorganic layers generated by the anions and organic layers in which the PhCN molecules are inserted; the organic sub-lattice is built up from four different ET units, three of them with a ch…

organic compoundStereochemistryGeneral Chemical EngineeringDimerCrystal structure010402 general chemistry01 natural scienceschromium derivativeParamagnetismchemistry.chemical_compoundtetrathiafulvalene derivativeMolecule[CHIM]Chemical Sciencescontrolled studyradical010405 organic chemistryferromagnetic materialarticleCharge densityGeneral ChemistryanionX ray crystallographysemiconductordimerMagnetic susceptibility0104 chemical sciencescationinorganic compoundCrystallographyRadical ionchemistryelectrochemistrymagnetismchemical structureroom temperatureTetrathiafulvaleneconductanceenergy
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