Abstract

Treatment of pyrazolyl acetoximes p-RC6H4{CN(H)NCCH}CH2C(Me)NOH (R=OMe, H, F, Cl, CN, NO2) with 1equiv of ZnCl2 leads to the complexes [ZnCl2(p-RC6H4{CN(H)NCCH}CH2C(Me)NOH)] (81–91%). These species exhibit fluorescence at room temperature with emission maxima in the region 460–509nm and biexponential relaxation with τ1=4.63–8.64ns and τ2=0.482–0.955ns, respectively. The zinc complexes were characterized by elemental analyses (C, H, N), HRESI-MS, FTIR, 1H and 13C{1H} NMR, and CP-MAS TOSS 13C{1H} NMR. In addition, two zinc complexes and one pyrazolyl acetoxime were studied by single-crystal X-ray diffraction.

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