Inorganic Chemistry, Vol.39, No.21, 4977-4980, 2000
Reversible and site-specific reduction of the ligand sides in a molecular rectangle with up to eight electrons
The molecular rectangle [(bp)(2)(bpym)(2)(OC)(12)Re-4](4+) (bp = 4,4'-bipyridine and bpym = -2,2'-bipyrimidine) undergoes several reversible reduction processes in DMF solution. UV/vis and IR spectroelectrochemistry shows that the two bpym ligands are reduced twice by one electron each before the bp components pick up additional electrons in one-electron steps at more negative potentials. [GRAPHICS]