6533b85bfe1ef96bd12bb513

RESEARCH PRODUCT

Ferromagnetic coupling through spin polarization in the hexanuclear [MnII(3)CuII(3)] complex.

Narcis AvarvariFrancesc LloretMarius AndruhMirela PascuMiguel Julve

subject

Inorganic ChemistryCrystallographychemistry.chemical_compoundCoupling (physics)Spin polarizationFerromagnetismCondensed matter physicsChemistryTrimesic acidPhysical and Theoretical Chemistry

description

A novel Cu(II)-Mn(II) hexanuclear complex of formula [[MnCuL](3)(tma)](ClO(4))(3).8H(2)O [H(2)L = macrocyclic Robson proligand; H(3)tma = trimesic acid] has been obtained by connecting three heterobinuclear [Cu(II)Mn(II)L](2+) cationic species through the trimesate anion. The complex exhibits a C(3) rotational symmetry, imposed by the geometry of the bridging ligand. The interaction within each Mn(II)-Cu(II) pair is antiferromagnetic (J = -16.7 cm(-1)). A weak ferromagnetic coupling among the three S = 2 resulting spins through the tricarboxylato bridge leads to a S = 6 ground spin state, for which the spin polarization mechanism is responsible.

yearjournalcountryeditionlanguage
2004-08-18Inorganic chemistry
10.1021/ic0493651https://pubmed.ncbi.nlm.nih.gov/15310192