A unique magnetic electroswitching behavior has been observed in an oxamato-based permethylated dicopper(II) paracyclophane; upon reversible one-electron oxidation of the double tetramethyl-substituted p-phenylenediamidate bridging skeleton, the spin alignment of the two CuII ions (SCu=1/2) changes from antiparallel (OFF) to parallel (ON) in the resulting dicopper(II) p-radical cation species.
