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),β=98.770(2)°,V=2547.9(3)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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