Synthesis,Structure, Spectral and Magnetic Properties of 1D Zig‐zag Coordination Complex: {[Ni(cyclam)(μ‐1,5‐dca)]ClO4·[(CH3)2CO]}n

A new nickel(II) complex, {[Ni(cyclam)(μ‐1,5‐dca)]ClO₄·[(CH₃)₂CO]}_n (1), (cyclam = 1, 4, 8, 11‐tetraazacyclotetradecane, dca = dicyanamide, N(CN)₂⁻) has been synthesized and structurally characterized. The complex crystallizes in orthorhombic system, space group Pnma; with a = 9.1958(15) Å, b = 15.528(3) Å, c = 16.335(3) Å and Z = 4. According to X‐ray crystallographic studies, 1 is a one‐dimensional zig‐zag infinite chain complex which consists of alternately single μ‐1,5‐dca linked the nickel atoms. The IR and UV spectroscopy were measured. The absorption bands of d–d electron transition are assigned and the values of Dq and B were calculated according to the electronic spectrum of the complex. The magnetic property studies indicate that complex 1 exhibits weak antiferromagnetic interaction through the five‐atom [NCNCN] bridging ligands with J = –0.382 cm⁻¹.