title: Ferromagnetic vs antiferromagnetic coupling in bis(mu-phenoxo)dicopper(II) complexes. Tuning of the nature of exchange coupling by remote ligand substituents.
abstract: Two bis(mu-phenoxo)dicopper(II) complexes, [(L(CH3))(2)Cu(2)] (1) and [(L(t-Bu))(2)Cu(2)] (2), where L(CH3) and L(t-Bu) represent the dianions of (methylamino)-N,N-bis(2-methylene-4,6-dimethylphenol) and of (methylamino)-N,N-bis(2-methylene-4,6-di-tert-butylphenol), respectively, are reported to demonstrate the effect of remote substituents on the nature of exchange coupling interactions between the copper(II) centers. In contrast to 1, which is as usual antiferromagnetically coupled, complex 2 is a rare example of a ferromagnetically coupled diphenoxodicopper(II) complex.
authors.affiliation: Max-Planck-Institute for Bioinorganic Chemistry, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany. Chaudh@mpi-muelheim.mpg.de
authors.forename: Phalguni
authors.initials: P
authors.lastname: Chaudhuri
authors.forename: Rita
authors.initials: R
authors.lastname: Wagner
authors.forename: Thomas
authors.initials: T
authors.lastname: Weyhermüller
mesh_terms: D003300:Copper / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D008024:Ligands; D008280:Magnetics; D009942:Organometallic Compounds; D010647:Phenyl Ethers
chemical_list: D005290:Ferric Compounds; D008024:Ligands; D009942:Organometallic Compounds; D010647:Phenyl Ethers; C001215:ferrite; D003300:Copper