A series of new acyclic ruthenium(II) 5,5'-bis-amide substituted 2,2'-
bipyridyl receptor molecules have been synthesized. H-1 NMR spectrosco
py, cyclic and square wave voltammetry, electronic absorption and fluo
rescence-emission spectroscopic measurements have demonstrated the spe
ctral and electrochemical recognition of chloride, and spectral recogn
ition of bromide anions in polar solvents.