A series of heterobimetallic wire-like organometallic complexes [(tpy-C6H4-R)(PPh3)(2)Ru-C equivalent to C Fc](+) (tpy-C6H4-R = 4'-(aryl)-2,2':6',2"-terpyridyl, Fc = [(eta(5)-Cp)(2)Fe], R = -H, -Me, -F, -NMe2 in complexes 5-8, respectively) featuring ferrocenyl and 4'-(aryl)-2,2':6',2"-terpyridyl ruthenium(II) complexes as redox active metal termini, have been synthesized. Various spectroscopic tools, such as multinuclear NMR, IR spectra, HRMS, CHN analyses, and single crystal X-ray crystallography have been utilized to characterize the heterobimetallic complexes. The electrochemical and UV-vis-NIR spectroscopic studies have been investigated to evaluate the electronic delocalization across the molecular backbones of the Ru(II)-Fe(II) heterobinuclear organometallic dyads. Electrochemical studies reveal two well-separated reversible redox waves as a result of successive oxidation of the ferrocenyl and Ru(II) redox centers. The spin density distribution analyses reveal that the initial oxidation process is associated with the Fe(II)/Fe(III) couple followed by one electron oxidation of the ruthenium(II) center. The high K-c value (0.11-1.73 X 10(12)) and intense NIR absorption, with molar absorption coefficient (in the order of 10(3) M-1 cm(-1)) for the RullFelll mixed-valence species, signify strong electronic communication between the two metal termini. The electronic coupling constant (H-ab) has been estimated to be 492 and 444 cm(-1) for the structurally characterized complexes 6 and 7, respectively. The redox and NIR absorption features indicate that the mixed-valence system of the heterobinuclear dyads belongs to a Robin and Day "class II" system.