In this study, sigma(K alpha), sigma(K beta) production cross-sections, KLM/K(alpha) and KMM/K(beta) radiative Auger intensity ratios of Zn in different complexes were measured. The samples were excited by 59.5 keV gamma-rays from a (241)Am annular radioactive source. K X-rays emitted by samples were counted by an Ultra-LEGe detector with a resolution of 150 eV at 5.9 keV. The charge transfer effects on central Zn atom was investigated by using the behaviors of different ligands in these complexes. (C) 2009 Elsevier B. V. All rights reserved.