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Two new imidazolidino Schiff base compounds, (E)-N-((quinoxalin-2-yl)methylene)- 2-(2-(quinoxalin-3-yl)imidazolidin-1-yl)ethanamine 1 and 2-(1-(2-(2-(quinoxalin-3-yl)imidazolidin- 1-yl)ethyl)imidazolidin-2-yl)quinoxaline 2, have been synthesized and characterized by elemental analysis, 1H NMR, IR, MS and single-crystal X-ray diffraction. Crystallographic data for 1: C22H21N7, Mr = 383.46, monoclinic, space group P21, a = 7.0036(14), b = 6.9151(14), c = 19.701(4) ,β = 96.57(3)°, Z = 2, V = 947.9(3)3, Dc = 1.344 g/cm3, F(000) = 404, μ= 0.085 mm-1, Flack parameter = 0(2), R = 0.0464 and wR = 0.1055; and those for 2: C24H26N8, Mr = 426.53, triclinic, space group P1, a = 9.6680(19) , b = 10.334(2) , c = 11.389(2), α = 104.12(3), β = 102.95(3), γ = 100.48(3)°, Z = 2, V = 1041.2(4)3, Dc = 1.361 g/cm3, F(000) = 452, μ = 0.086 mm-1, R = 0.0373 and wR = 0.1155. For the two compounds, the five-membered imidazolidine rings all adopt envelope conformation. Moreover, the title compounds show one-dimensional layered and three-dimensional supramolecular chainlike structures, respectively. Fluorescent properties of the two compounds have been investigated in the solid state at room temperature. Compound 1 exhibits strong fluorescence and thus may serve as excellent candidates of green fluorescent materials.
Two new imidazolidino-Schiff base compounds, (E) -N (quinoxalin-2-yl) methylene 2- (2- (2- (2- (2- (2- (2- (quinoxalin-3-yl) imidazolidin- 1 -yl) ethyl) imidazolidin-2- yl) quinoxaline 2, have been synthesized and characterized by elemental analysis, 1H NMR, IR, MS and single- -ray diffraction. Crystallographic data for 1: C22H21N7, Mr = 383.46, monoclinic, space group P21, a = 7.0036 (14), b = 6.9151 (14), c = , Z = 2, V = 947.9 (3) 3, Dc = 1.344 g / cm3, F (000) = 404, μ = 0.085 mm-1, Flack parameter = ; and those for 2: C24H26N8, Mr = 426.53, triclinic, space group P1, a = 9.6680 (19), b = 10.334 (2), c = 11.389 (2) (3) γ = 100.48 (3) ° Z = 2 V = 1041.2 (4) 3 Dc = 1.361 g / cm3 F (000) = 452 μ = 0.086 mm- wR = 0.1155. For the two compounds, the five-membered imidazolidine rings all adopt envelope conformation. Moreover, the title co mpounds show one-dimensional layered and three-dimensional supramolecular chainlike structures, respectively. Fluorescent properties of the two compounds have been investigated in the solid state at room temperature. Compound 1 exhibits strong fluorescence and thus serve as excellent candidates of green fluorescent materials.