The palladium homobimetallic complexes 2a and 2b with a bridging pi-conjugated molecule, N.N'-bis(4'-pyridplmethylidene)-1,4-phenylenediamine (L-2a) and 2'-pyridyl derivative L-2b. were respectively synthesized and characterized by X-ray crystal structure analysis and cyclic voltammetry. H-1-NMR of 2b indicates the five-coordinate geometry on the palladium center.