Co-ordination of a new bis-terpyridine ligand with cupric perchlorate yielding a dinuclear M2L species

We report the synthesis of a new bis-terpyridine ligand which could potentially yield a variety of polynuclear complexes. An investigation of the co-ordination chemistry of this ligand with Cu(II) ions in a 1:1 ratio yielded a complex with a 2:1 ratio of Cu to ligand. The crystal structure of the dinuclear copper(II) complex shows the two equivalent copper cations are co-ordinated via five donor atoms in a highly distorted square pyramidal arrangement. The structure was solved in a monoclinic space group C2/c with cell parameters, a = 21.340(5), b = 14.004(5), c = 18.368(5) Å, α = 90°, β = 106.575(5)°, γ = 90°, volume = 5261(3) Å3, Z = 4.