One-dimensional ladder like and two-dimensional polymorphs of heterometallic thiocyanate bridged copper(II) and mercury(II) coordination polymer: Syntheses, structural, vibration, luminescence and EPR studies

► The 1D triclinic {CuHg(en)(μ-NCS-N,S)4}n and 2D monoclinic {CuHg(en)(μ-NCS-N,S)3(SCN)}n coordination polymers were synthesized. ► The IR, far-IR, Raman and EPR spectra of the compounds were investigated. ► {CuHg(en)(μ-NCS-N,S)3(SCN)}n shows emission at room temperature in the solid state.