Journal of the Chilean Chemical Society · 2013 · 16 citations · 0 references
Natural SciencesChemistryPhysicsCondensed Matter PhysicsCrystal StructurePhysical ChemistryAntiferromagnetismCoordination ChemistryCrystal ChemistryCrystallographyMagnetic Properties Of SolidsMetal-ligand BondingCrystallographic SymmetryElectron-withdrawing GroupsElectronic Density Of StatesMagnetic Properties Of Coordination ComplexesMagnetic Properties Of Transition Metal ComplexesMagnetism Of Transition Metal ComplexesParamagnetism In Coordination CompoundsUnit Cell Parameters
This work is the first of a series of studies on systems with a common basic structure, Cu-b-diketonate, whose ability to bind to other ligands is regulated by the presence of electron-withdrawing groups affecting the electronic density on the copper ion. In this paper the [Cu (acac) 2 ] system is studied. Its structure reveals discrete units linked through H bridges (c.a. 2.7). The crystallographic system and space group, are monoclinic and P21/n respectively; the cell parameters are a= 10.34, b= 4.71, c= 11.38, beta= 91.78. The magnetic behaviour corresponds to a simple paramagnetism with = 1.8 [BM]; however, a weak antiferromagnetic interaction is observed at lower temperatures.