New Charge Transfer Salts Based on Bis(ethylenedithio)tetrathiafulvalene (ET) and Ferro- or Antiferromagnetic Oxalato-Bridged Dinuclear Anions: Syntheses, Structures and Magnetism of ET5[MM‘(C2O4)(NCS)8] with MM‘ = CrIIIFeIII, CrIIICrIII | Publicación