Synthesis, crystal structure and third-order non-linear optical properties of a Zn(II) two-dimensional polymer

Two-dimensional (2-D) metal-organic polymer [Zn3(μ2-4,4′-bipy)2(μ2-be)2(be)2(μ2-N3)2]n1 (4,4′-bipy = 4,4′-bipyridine, be = benzoate, N3− = azide anion) has been synthesized by low-hot reaction and characterized by single-crystal X-ray diffraction, elemental analyses, IR spectra and UV–visible spectra. The 2-D structure is built from the linkage of secondary building units of trinuclear [Zn3(μ2-4,4′-bipy)2(μ2-be)2(be)2(μ2-N3)2] clusters by a mixed connector of 4,4′-bipyridine, benzoate and azide. The third-order non-linear optical (NLO) properties of the 1 were also investigated with modulus of the hyperpolarizability (γ) 8.51 × 10−30 esu for 1 in a 3.17 × 10−4 mol dm−3 DMF solution.

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