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The electric field gradient of ¹¹¹Cd in Tl₅Te₃ is studied by means of the time dependent perturbed angular correlation technique at several temperatures. The results are well fitted by just one frequency, asymmetry parameter η = 0, and small relative frequency distribution. The variation of δ with temperature indicates an order-disorder transformation. The nuclear quadrupole frequency varies with T^3/2 up to 550 K. A comparison with the same type of structure compound In₅Bi₃ is presented as well as possible explanations for the peculiar apparent preference for just one site revealed by the single frequency.