The local polymer chain mobility of low molecular weight poly(ethylene oxide) (PEG) complexed with Ba(ClO4)(2) has been investigated with C-13 NMR techniques over the temperature range 297-463 K. The carbon line width and the rotating frame spin-lattice relaxation rate provide information of segmental motion in the mid-kilohertz region, as shown by their temperature dependencies with clear maxima at similar to 327 K. The laboratory frame spin-lattice relaxation rate maximum is observed at similar to 378 K, consistent with the progressive changes in correlation times of motion above the glass transition temperature. When comparing the present relaxation data for PEO-Ba(ClO4)(2) with those from the literature for PEO, we find that salt complexation dramatically slows down the segmental motions in the amorphous phase. The average correlation time curve of the PEG-salt complex is shifted to higher temperatures and shows greater temperature sensitivity in comparison with PEG.