Slow magnetic relaxation in carbonato-bridged dinuclear lanthanide(iii) complexes with 2,3-quinoxalinediolate ligands

The coordination chemistry of the 2,3-quinoxalinediolate ligand with different lanthanide(III) ions in basic media in air affords a new family of carbonato-bridged M2III compounds (M = Pr, Gd and Dy), the Dy2III analogue exhibiting slow magnetic relaxation behaviour typical of single-molecule magnets.