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RESEARCH PRODUCT
Synthesis and magnetic characterization of trans-dichloroplatinum blues with creatinine
Carlos J. Gómez-garcíaJesús Martín-gilFrancisco Javier Martín-gilEugenio Coronadosubject
Magnetic momentChemistryLigandStereochemistrychemistry.chemical_elementMagnetic susceptibilitylaw.inventionInorganic ChemistryParamagnetismCrystallographyDelocalized electronlawMaterials ChemistryPhysical and Theoretical ChemistryPlatinumElectron paramagnetic resonanceHyperfine structuredescription
Abstract By reaction of trans -[Pt II Cl 4 ] 2− with the amidate ligand creatinine two new paramagnetic blue platinum complexes have been obtained, namely violet and green varieties. These complexes have been characterized from thermal analysis, EPR and magnetic susceptibility. The violet complex has been formulated as trans -[Pt(creat)(H 2 O)Cl] 4 Cl. This compound has shown to be very stable, showing an extensive hyperfine structure in the powder EPR spectra. This result is a clear evidence of a tetranuclear oligomeric structure with one delocalized unpaired spin in the unit. EPR spectra in frozen solutions indicate that this mixed-valence complex maintains its oligomeric structure upon dissolution in water. Finally, magnetic susceptibility measurements of this platinum blue, over the range 4.2–300 K, show an unusually high magnetic moment, which varies from 4.5 μ B at room temperature to 1.1 μ B at 4.2 K.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-11-01 | Inorganica Chimica Acta |