CuCl2 center dot 2H(2)O and CH3CSNH2 were dissolved in ethylene glycol, and followed by the addition of NaOH to form solutions with different pH values. Reactions proceeded in surfactant-free solutions contained in an acid digestion bomb using a microwave irradiation at different conditions. Pure CuS (hcp) with flower-like, hollow spherical., and tubular structures were detected, and had the same vibration wavenumber at 474 cm(-1). They displayed two emission peaks at 411, and 432 nm. The formation of CuS with different morphologies was proposed according to the analytical results. (C) 2008 Elsevier B.V. All rights reserved.