摘要:
The X-ray crystal structures of 2,2'.-thio- and 2,2'-sulfonylbis(1,3-diarylprop-2-en-1-ones) are detennined [1: 2,2'-thiobis(3 -(p-chlorophenyl)- 1 -phenylprop-2-en-1-one), C30H20Cl2O2S, space group C2/c, a = 14.275(3), b = 6.280(1), c = 26.533(5) Angstrom, beta = 94.55(3)degrees, Z' = 1/2; 2: 2,2'-sulfonylbis(1,3-diphenylprop-2-en-1-one), C30H22O4S, space group P (1) over bar, a = 9.652(l), b = 12.044(1), c = 12.182(l) Angstrom, alpha = 61.985(6), beta = 77.511(5), gamma = 74.340(6)degrees, Z' = 1; 3: 2,2'-sulfonylbis(3-(p-chlorophenyl)-1-phenylprop-2-en- 1-one), C30H20Cl2O4S, space group P (1) over bar a = 8.294(1), b = 13.175(2), c = 13.470(1) Angstrom, alpha = 62.870(9), beta = 83.796(7), gamma = 85.282(8)degrees, Z' = 1]. The C=C double bonds are all clearly defined. The sulfide 1 crystallizes on a crystallographic twofold axis, leading to a symmetric molecular conformation. The sulfones 2 and 3 crystallize on general positions, with different and irregular conformations.