6533b82cfe1ef96bd128fda8

RESEARCH PRODUCT

Crystal structure, magnetic and spectroscopic properties of copper(II) formato dimethylformamide: a new tetracarboxylato-bridged copper(II) dimer

Francisco Sanz-ruizGloria AlzuetJoaquín BorrásRocio CejudoMalva Liu-gonzález

subject

DimerInorganic chemistrychemistry.chemical_elementCrystal structureZero field splittingMagnetic susceptibilityCopperInorganic ChemistryCrystalchemistry.chemical_compoundCrystallographychemistryMaterials ChemistryDimethylformamideMoleculePhysical and Theoretical Chemistry

description

Abstract The crystal and molecular structure of a new tetracarboxylato copper(II) dimer [bis(dimethylformamide)tetrakis(μ-formato)dicopper(II)], has been determined by X-ray diffraction methods. The crystal structure consists of a centrosymmetric dimer [Cu2(HCOO)4(dmf)2], where four bidentate formato anions form syn–syn bridges between the metal ions which are in a 4+1 environment. Magnetic susceptibility data show that the copper ions are strongly antiferromagnetically coupled with J=−470 cm−1. The EPR spectrum shows a characteristic pattern of a triplet state with a D zero field splitting value of 0.27 cm−1.

https://doi.org/10.1016/s0277-5387(02)00935-x