COMPLEXES OF DITHIOBENZOIC ACIDS. II. PREPARATION OF SEVEN-COORDINATE DITHIOBENZOATO COMPLEXES OF TITANIUM(IV) INCLUDING OXO-BRIDGED EXAMPLES

The first complexes of titanium(IV) with dithiobenzoic acids, specifically [Ti(dtb) 3 Cl], [Ti(mdtb) 3 Cl] (where dtb=dithiobenzoate ion and mdtb=p-methoxydithiobenzoate ion) have been prepared and then hydrolyzed to produce the respective oxo-bridged species, [Ti(dtb) 3 ] 2 O and [Ti(mdtb) 3 ] 2 O, which exhibit characteristic strong Ti‒O‒Ti absorptions in the IR at 750 and 745 cm −1 , respectively. The latter two compounds appear to be the first seven-coordinated oxo-bridged Ti(IV) species involving sulfur-donor ligands. The first tin(IV)-dithiobenzoato complex, [Sn(dtb) 2 Cl 2 ], was also prepared.