To understand the nature of Sb2Se3 semiconductor as a bulk sample, the X-ray diffraction study was carried out to identify the sample structure. Dc and ac electrical properties measured in the temperature range 290-370 K, and frequency range 10(2)-10(5) Hz were the subject of the present work. Properties such as dielectric constant. zeta, loss function tandelta, and electrical conductivities sigma(ac) as a function of both frequency and temperature are reported. Different models of electrical conduction in semiconductor materials have been used to explain the observed results. A trail has been made to correlate the results of this paper with the average heat of atomization H-S and the average coordination number M. The experimental and theoretical investigation is in accordance with Liang criterion. (C) 2003 Kluwer Academic Publishers.