the neodymium trifluoroacetate complex was synthesized and characterized by single-crystal x-ray diffraction, elemental and tg analysis, ft-ir spectra, and pl spectra. the optical properties of the liquid medium were studied. from the absorption and luminescence spectra, the judd-ofelt parameters of the nd(cf3coo)3dissovled in phosphorus oxychloride were obtained. based on the crystal structure, the effects of crystal field and bond valance properties on three intensity parameters ωt(t=2,4,6) and emission cross-section were analyzed in detail. the emission cross-section of4f3/2→4i11/2fluorescence transition (3.63×10-20cm2) of the new neodymium compound was higher than those of other nd(iii) complexes and even comparable with some laser glasses. © 2017 spie.