The preparation of a novel titanium(IV) metallocene (2), including 2,6-diethyl-4,8-dimethyl-5-hydroindacenide (Ic'H) as ligand was successfully achieved and it was characterized by means of H-1, C-13 NMR and elemental analysis. Cyclic voltammetry studies were performed for complex 2 as well as for its zirconium analog 1. Both complexes were tested in the catalysis of ethylene polymerization, showing a considerable difference between their catalytic activities in a proportion of 625: 1 between complex 1 and 2. DFT calculations were performed in order to gain further knowledge about the geometry of the complexes and their electronic properties and therefore explain the difference between their reactivity. (C) 2012 Elsevier B.V. All rights reserved.