Understanding the structure and properties of MgCl2/TiCl4 nanoclusters is a key to uncovering origin Ziegler–Natta catalysis. In particular, vibrational spectroscopy can sensitively probe morphology active species MgCl2/TiCl4. Here, we determined spectroscopic fingerprints 50MgCl2 50MgCl2/3TiCl4 which were obtained by nonempirical determination based on an evolutionary algorithm DFT. The adsorp...