Synthesis, structure, and magnetic properties of novel 1,3,5-triazapentadienyl copper(II) complexes [N(2,6-iPr2-C6H3)C(NMe2)NC(NMe2)N(SiMe3)]CuCl and [N(Ph)C(NMe2)NC(NMe2)N(SiMe3)]2Cu

The first mononuclear copper(II) complexes [N(Dipp)C(NMe2)NC(NMe2)N(SiMe3)]CuCl (Dipp = 2,6-iPr2-C6H3) (2) and [N(Ph)C(NMe2)NC(NMe2)N(SiMe3)]2Cu (3) with 1,3,5-triazapentadienyl ligands have been synthesized and structurally characterized by X-ray crystallography and spectroscopic techniques. The X- ray structures of 2 and 3 show that they crystallize in the triclinic system. Trigonal planar structure is observed for the Cu(II) center in 2 and a square-planar environment in 3. The magnetic properties of 2 and 3 have been investigated.