Synthesis and properties of [Pt(4-CO2CH3-py)2(dmit)] and [Pt(4-NO2-py)2(mnt)]: Exploring tunable Pt dyes

Square-planar Pt complexes have been prepared and show separate tuning of the HOMO and LUMO orbitals through modification of the dithiolate (HOMO) and pyridyl (LUMO) ligands, respectively. This is evidenced by voltammetry, hybrid DFT calculations, UV/Vis spectroelectrochemistry and in situ EPR spectroelectrochemistry.