Aqueous Phase Synthesis of Dicarboxylic Derivatives of Titanocene

Abstract

The nine complexes, (RC₅H₄)₂Ti(O₂CC₆H₄X)₂ (R=H, CH₃; X=H, o-Cl, o-OH, O-NH₂, o-NHPh), have been conveniently prepared by the reaction of (RC₅H₄) ₂TiC1₂ with 2 equiv. sodium salts of appropriate carboxylic acids in water containing acetylacetone. They have been characterized by elemental analysis, IR and 1H-NMR. The carboxylate ligands in the complexes coordinate to titanium atom in monodentate mode. The complexes contain functional groups (OH, NH₂, NHPh), which are involved in strong intramolecular hydrogen-bonding.