Platinum(II) Complexes with Tetradentate Dianionic (O^∧C*^∧C*^∧O)-Ligands

Abstract

New tetradentate O^∧C*^∧C*^∧O-ligands and the corresponding biscarbene platinum(II) complexes are reported. They were fully characterized by ¹H NMR and ¹³C NMR spectroscopy as well as elemental analysis. Additionally, solid-state structures of bis[3,3′-(2-hydroxyethyl)-1<i>H</i>-imidazolium-2,2′-diylidene]methane-1,1′-diylplatinum(II) dibromide and of bis[3,3′-(2-ethoxide)-1<i>H</i>-imidazolium-2,2′-diylidene]methane-1,1′-diylplatinum(II) potassium bromide are reported. The latter can be characterized as a one-dimensional chain structure formed by coordination of potassium bromide.