Synthesis, Crystal Structure and Binding Properties of 6H,7H,13H,14H-5a,6a,7a,12a,13a,14a- Hxaazbenz

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The title compound 6H,7H,13H,14H-5a,6a,7a,12a,13a,14a-hxaazbenz[f]indeno[2,1,8- ija]naphth[2,3-f]azulene-14b,14c-dicarboxylic-5,8,12,15-tetrahydro-6,8,14-trioxo-diethyl ester(C27H26N6O7, Mr = 546.54) has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c with a = 8.8129(6), b = 17.9883(13), c = 16.2623(11) (A), β = 98.770(2)°, V = 2547.9(3) (A)3, Z = 4, Dc = 1.425 g/cm3, μ(MoKα) = 0.105 mm-1, F(000) = 1144, the final R = 0.0672 and wR = 0.1162 for 2275 observed reflections with I > 2σ((I). The crystal structural analysis shows that intermolecular C-H…O hydrogen bonds and π-π stacking interactions result in a three-dimensional framework. The binding study by fluorescence spectroscopy titration showed that he title compound can selectively recognize Fe3+ with fluorescence quenching.
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