A structurally diverse mixed-metal complex with mixed bridging ligands [{[(bpy)2Os(dpp)]2Ru}2(dpq)](PF6)12: Modulating orbital energetics within a supramolecular architecture

A supramolecular light absorber, [{[(bpy)2Os(dpp)]2Ru}2(dpq)](PF6)12, has been prepared. This efficient light absorber has a high molecular weight 5173 g/mol with large ε of 8.3 × 105 M−1 cm−1 at 560 nm. It possesses a lowest unoccupied molecular orbital localized on the central μ-dpq and a highest occupied molecular orbital localized on the terminal Os, providing significant spatial separation of donor and acceptor orbitals.