TITANIUM(IV) NEOPENTOXIDES - X-RAY STRUCTURES OF TI-3(MU(3)-CL)(MU-OCH2CME3)(3)(OCH2CME3)(6) AND [TI(MU-OCH2CME3)(OCH2CME3)(3)](2)

Attempts to synthesize titanium(IV) neopentoxide led to two unique pro ducts which were crystallographically characterized. A metathesis reac tion between TiCl4 and NaOCH2CMe3 (NaONp) yielded Ti-3(O)(Cl)(ONp)(9) . C7H8, 1, which adopts a standard M-3(mu(3)-X)(2)(mu-X)(3)X-6 structu re. The mu(3) ligands are a Cl and an O atom, with the lest of ligands represented by bridging and terminal ONp ligands. [Ti(ONp)(4)](2), 2, was isolated in high yield by an alcoholysis exchange between Ti(OPri )(4) and HONp. 2 adopts a typical M-2(mu-X)(2)(X)(6) fused axial-equat orial edge-shared geometry, wherein each metal center is 5 coordinated . On the basis of molecular weight solution studies and H-1, C-13, O-1 7 (natural abundance), and Ti-47,Ti-49 solution and solid-state NMR in vestigations, 2 was determined to be a monomer in solution.