Facile photoinduced charge separation through a cyanoacetylide bridge in a heterobimetallic Fe(II)-Re(I) complex

摘要

Photoinduced Fe-to-bpy charge transfer in [{Cp(dppe)Fe}-(μ-C ≡ CC ≡ N){Re(CO)_3(bpy)}]PF_6 has been observed by ps-TRIR spectroscopy, supported by UV-Vis/IR spectroelectro-chemistry and DFT calculations.rnPolynuclear systems in which some bridging ligand permits control over the spatial arrangement of the constituent metal centres and electronic interactions between them are of immense contemporary interest with a view to the construction of functional molecular structures. In this regard, the ubiquitous cyanide ligand, [CN]~-, offers many useful structural and electronic properties, including cylindrical symmetry and a strong σ-bonding framework complemented by π and π~* orbitals of appropriate symmetry to interact with metal d orbitals.