A new mixed-valence copper(I,II) coordination polymer with 1-D chain structure

A new mixed-valence copper(I, II) coordination polymer, { [ Cu 2 I Cu 2 II I 2 L 4 ] · 4DMF } n 1 (HL = N′-(2-methylene pyridine)isonicotinohydrazide), was synthesized by N′-((N-oxide- pyridin-2-yl)methylene)isonicotinohydrazide and cuprous iodide. Complex 1 exhibit a one-dimensional structure built up from mixed valence units of Cu 2 I Cu 2 II L 4 linked by iodide anions. The coordinated environments of Cu(II) and Cu(I) are distorted octahedron and tetrahedron, respectively.