A new zinc(II) supramolecular square: synthesis, crystal structure, thermal behavior and luminescence
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Abstract
A new square-shaped Zn(II) complex, [Zn4(L)4(phen)4]·6H2O (1, L = 2-hydroxynicotinate and phen = 1,10-phenanthroline), was synthesized under hydrothermal condition. The crystal of 1 belongs to triclinic, space group P–1 with a = 10.773(2) Å, b = 12.641(3) Å, c = 13.573(3) Å, α = 107.44(3)°, β 102.66(3)°, γ = 93.89(3)°, C72H56N12O18Zn4, FW = 1638.77, V = 1702.8(6) Å3, Z = 1, Dc = 1.598 g/cm3, S = 1.045,μ(MoKα) = 1.475 mm-1, F(000) = 836, R = 0.0472 and wR = 0.0919. Four L ligands bridge four Zn(II) atoms to form a square-shaped structure, where four phen ligands are respectively located on the four corners of the square. The π–π stacking interactions extend adjacent squares into a 1D supramolecular chain. The thermal behavior of 1 was characterized. Moreover, the solid-state luminescence property of the complex was studied at room temperature.
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