New Platinum Complexes from Salen- and Hydroxy-Substituted Salpn-Naphthalene Ligands with CO2 Reduction Activity

The electrocatalytic reduction of carbon dioxide (CO2) into added-value products is a promising alternative to completing the cycle atmospheric CO2. We report two new platinum complexes—a salen-like naphthalene (PtL1) and hydroxy-substituted salpn (PtL2)—that are capable activating CO2 produce monoxide (CO). predominant keto tautomer non-innocent ligands was determined using DFT calculations UV-Vis spectroscopy. PtL2 complex has CO Faradaic efficiency >40% in presence water as sacrificial proton source at −2.5 V vs. Fc/Fc+. addition hydroxy group combination with decreased potential increased formation tenfold when compared PtL1.