Facile access to heterobimetallic MII/CuI complexes with a multichelate platform and their response towards CO2RR.

We describe the selective formation of heterobimetallic complexes, exploiting the coordination trends of the developed bis-terpyridyl trans-1,2-cyclohexadiamine platform (L) towards tetrakisacetonitrile transition metal precursors, [M(MeCN)4][BF4]2, M = Fe or Ni, and [Cu(MeCN)4][BF4]. The four species obtained are structurally characterised, and their cyclic voltammetry analysis reveals the impact of the CuI-atom presence on the heterobimetallic complexes under argon and carbon dioxide. Furthermore, carbon dioxide photoreduction studies are presented.