Formate complexes of titanium(IV) supported by a tris(phenolato)-amine ligand

Formate complexes of tri- and tetravalent titanium supported by a tris(phenolato)amine ligand

“…From all these bonding parameters, compound 7 can be best described as a [(O 3 N)Ti( iii )] adduct of the titanium( iv ) terminal formate complex 2 . Although several examples of formato-bridged dititanium complexes are known in the literature, 9,10,13 7 represents the first example of a mixed valence, formato-bridged, dititanium complex. Notably, the unsymmetrical interaction of the formato ligand at the two titanium centers in 7 also differs from its cationic analogue [{(O 3 N)Ti( iv )} 2 (μ-OCHO-η O :η O ′)][B(C 6 F 5 ) 4 ], where the formato ligand symmetrically binds to both titanium( iv ) centers.…”

“…Notably, the unsymmetrical interaction of the formato ligand at the two titanium centers in 7 also differs from its cationic analogue [{(O 3 N)Ti( iv )} 2 (μ-OCHO-η O :η O ′)][B(C 6 F 5 ) 4 ], where the formato ligand symmetrically binds to both titanium( iv ) centers. 10…”