Yan Xi
2005
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Journal
Chemical Research in Chinese Universities
Abstract
A new water soluble compound trisodium 5,3′,5′-trisulfonate-2,3,4,4′-tetrahydroxy-deoxybenzoin(TTDB) was synthesized and characterized by IR, UV, ~1H NMR, and elemental analysis. Single crystals of(TTDB) was determined by X-ray single crystal diffraction. The scavenging effect of compounds on hydroxy radicals was detected by fluorescent spectrophotometry. The electrochemistry behavior of the compounds in non-aqueous solution DMF was carried out by means of cyclic voltammetry. The experimental result shows that the crystal [C_14H_17Na_3O_18S_3] belongs to monoclinic space group C2/c with unit cell constants a={1.422 3(4) nm,} b=2.432 7(8) nm, c=1.359 6(4) nm, β=113.044(5)°, Z=8, V=4.329(2) nm~3, D_c =1.925 Mg/m~3, F(000)=2 568, M-r=638.43, R_1=0.095 0, wR_2=0.264 8. The half effective concentration EC_50 of scanvenging hydroxy radicals of compounds THDB and TTDB are 53.1 and 47.3 μmol/L, respectively. The electrochemistry redox processes of THDB and TTDB are different.