We are hiring a Postdoc! If you have PhD/PDRA experience in air sensitive, platinum group metal organometallics, are interested in using this expertise in single-crystal SMOM synthesis and reactivity,...

El uso de combustibles fósiles unido a los incendios y a la pérdida de capacidad de absorción de los bosques y el océano elevan a niveles récord la acumulación del principal gas de efecto invernadero

We describe the selective formation of heterobimetallic complexes, exploiting the coordination trends of the developed bis-terpyridyl trans-1,2-cyclohexadiamine platform (L). Following a stepwise addition, we first reacted ligand L toward tetrakisacetonitrile transition metal precursors, [M(MeCN)4][BF4]2 (where M = Fe or Ni), to generate the monometallic complexes 1 ([FeL][BF4]2) and 2 ([NiL][BF4]2). These species were later combined with the tetrakisacetonitrile precursor [Cu(MeCN)4][BF4], generating the corresponding heterobimetallic complexes 3 ([FeCuL(MeCN)2][BF4]3) and 4 ([NiCuL(MeCN)2][BF4]3). The four species obtained, in high yields, have been structurally characterized. Their cyclic voltammetry analysis revealed the impact of the CuI-atom presence on the heterobimetallic complexes under argon and carbon dioxide (CO2) atmospheres. Controlled potential electrolysis studies revealed the instability of complexes 1–4 toward CO2RR, generating the heterogeneous material in solution and on the electrode surface. In contrast, CO2 photoreduction studies revealed higher stability and photocatalytic activity for the FeII-based complexes (1 and 3), generating CO with 88% selectivity.

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The chemistry of precious-metal-based open-shell mononuclear complexes remains underdeveloped. Now it has been shown that iridium metalloradicals enable Ir(II)/Ir(IV) redox cycles and catalyse olefin ...