Four kinds of new cyano-bridge complexes have been prepared and characterized by elemental analysis, IR spectra, UV-Vis spectra, Luminescent spectra and electrochemical techniques. The formation of cyanide bridge is evident from the IR and UV-Vis spectra by appearance of (ν~C≡~N) shifts and changes in λ~m~a~x with respect to the mononuclear parent complex [Fe(CN)]^4^- and [CoLm]^3^+, respectively. The complexes studied are interesting as models for the design of energy conversion schemes.

Key words: INFRARED SPECTROPHOTOMETRY, ELEMENTAL ANALYSIS, IRON COMPLEX, COBALT COMPLEX, POTASSIUM FERROCYANIDE, FLUOROSPECTROPHOTOMETRY, CYCLOVOLTAMGRAPH