The reaction of Cp 2 TiCl 2 with two equivalents of maltol (3-hydroxy-2-methyl-4-pyrone) in water, at room temperature and pH of 5.4, leads to a complete replacement of Cp and chloride ligands affording, Ti(maltolato) 2 (OH) 2. The complex has been characterized by IR, NMR and ESI-MS spectroscopic and cyclic voltammetry methods. In DMSO-d 6 solution, the complex shows two isomers in a ratio of 4:1, in which one OH signal can be identified per isomer. This suggests that in solution the complex is monomeric, most likely a chiral cis-Ti(maltolato) 2 (OH) 2 and trans-Ti (maltolato) 2 (OH) 2 . The monomeric nature of the complex (in water/methanol 1:1) was verified by ESI-MS spectroscopy, showing a parent peak at 329 m/z. Electrochemical behavior of Ti (maltolato) 2 (OH) 2 using cyclic voltammetry experiments showed the complex undergoes irreversible reduction in aprotic solvents. In D 2 O solution, at pH of 8.4, the 1 H NMR spectrum of the complex shows a mixture of monomer and tetramer Ti(IV)-maltol complexes in a ratio of 1:1. The crystallization of Ti (maltolato) .686(7) Å, β= 97.678(4)° and V = 6824(4) Å 3 for Z = 4. Solid state structure determination of the Ti-maltol complex showed to be tetrameric, containing two bridging oxides (in cis position) and two bidentate maltol ligands per titanium in a pseudo-octahedral coordination geometry.

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