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The title compound of 4-(2-methylene-1-ethyl-3,3-dimethylindoline-2’-yl)-6,8-dibro-mo-1’-ethyl-3’,3’-dimethylspiro[3,4-dihydro-2H-1-benzopyran-2,2’-indoline],C33H36Br2N2O,as a dicondensed spiropyran(DC) has been synthesized by indoline in ethanol with 3,5-dibromo-salicyaldehyde.The compound was characterized by elemental analysis and IR spectra.Meanwhile,the crystal of the compound was obtained and determined by X-ray single-crystal diffraction.Crystal data:monoclinic system,space group P21/n,a=12.9699(15),b=12.5196(13),c=19.327(2),β=106.493(3)°,Mr=636.46,V=3009.1(6) 3,Z=4,F(000)=1304,Dc=1.405 g/cm3,μ=2.722 mm-1,R=0.0554 and wR=0.1176 for 6892 independent reflections(Rint=0.0354) and 5699 observed reflections(Ⅰ > 2σ(Ⅰ)).
The title compound of 4- (2-methylene-1-ethyl-3,3-dimethylindoline-2’-yl) -6,8-dibro-mo-1’-ethyl-3 ’ 4-dihydro-2H-1-benzopyran-2,2’-indoline], C33H36Br2N2O, as a dicondensed spiropyran (DC) has been synthesized by indoline in ethanol with 3,5-dibromo-salicaldehyde. The compound was characterized by elemental analysis and IR spectra. While the crystal of the compound was obtained and determined by X-ray single-crystal diffraction. Crystal data: monoclinic system, space group P21 / n, a = 12.9699 (15), b = 12.5196 C = 19.327 2, β = 106.493 (3) °, Mr = 636.46, V = 3009.1 (6) 3, Z = 4, F (000) = 1304, Dc = 1.405 g / cm3, μ = mm-1, R = 0.0554 and wR = 0.1176 for 6892 independent reflections (Rint = 0.0354) and 5699 observed reflections (I> 2σ (I)).