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A new cadmium(II) coordination polymer constructed by 2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-f][1,10]-phenanthroline and 1,3-benzenecarboxylate: Synthesis, crystal structure, thermal behavior and luminescent property

Kong Zhi-Guo (Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, College of Chemistry, Jilin Normal University, Siping, China)
Guo Sheng-Nan (Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, College of Chemistry, Jilin Normal University, Siping, China)
Zhao Ying-Xue (Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, College of Chemistry, Jilin Normal University, Siping, China)
Song Dan (Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, College of Chemistry, Jilin Normal University, Siping, China)

A new Cd(II) coordination polymer, namely, [Cd2(Cl)(1,3-BDC)1.5(L)2]•1.25H2O (1) (L = 2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline and 1,3-BDC = 1,3-benzenedicarboxylate), has been synthesized under hydrothermal condition. The crystal of 1 belongs to orthorhombic, space group P bcn with a = 31.3116(19) Å, b = 13.5485(8) Å, c = 22.9850(15) Å, α = 90º, β = 90º, γ = 90°, C50H28.5Cd2Cl3F2N8O7.25, Mr = 1226.46, V = 9750.8(10) Å3, Z = 8, Dc = 1.671 g/cm3, S = 1.038, μ(MoKα) = 1.106 mm-1, F(000) = 4860, R = 0.0585 and wR = 0.1485. Compound 1 shows a 1D ladder structure. Further, neighboring 1D ladders are joined together by π•••π interactions to result in a 2D supramolecular layer. The thermal behavior of 1 has been characterized. In addition, its luminescent property has been studied in solid state at room temperature.

Keywords: crystal structure, 1,3-benzenedicarboxylate, luminescence, 2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline