Di-μ-methanolato-bis[(2-tert-butyl-6-methylphenolato-κO)methyl­titanium(IV)]

The molecule of the title compound, [Ti₂(CH₃)₂(CH₃O)₂(C₁₁H₁₅O)₄] or {[Ti(Me)(μ-OCH₃)(OC₆H₃CMe₃-2-Me-6)]₂}, has a centrosymmetric, dimeric structure with a distorted square pyramidal array about each titanium atom. The methoxide ligands form an asymmetric bridge between the two Ti^IV atoms [Ti—O bond lengths of 1.9794 (12) and 2.0603 (12) Å] with the two phenolato ligands occupying the remaining basal sites [Ti—O 1.8218 (11) and 1.8135 (11) Å]. The Ti—O—C phenolato bond angles are similar at 161.24 (10) and 160.66 (11)°. The methyl ligand attached to the metal atom has a Ti—C bond length of 2.0878 (17) Å.

[6,6′-Bis(1,1-di­methyl­eth­yl)-4,4′-dimethyl-2,2′-methyl­enediphenolato-κ²O,O′]di­chlorido­(9H-fluoren-9-ol-κO)titanium(IV)–fluorene–diethyl ether (1/0.5/1)

The title adduct, [TiCl₂(C₂₃H₃₀O₂)(C₁₃H₁₀O]·0.5C₁₃H₁₀·C₄H₁₀O, is a monomer with a trigonal–bypyramidal coordination sphere of the Ti^IV atom in which the ligand O atoms of the bidentate diphenolate anion are located in both apical and equatorial positions. Chloride ligands occupy the remaining two equatorial sites of the trigonal bypyramid with the fluoren-9-ol O atom occupying the other apical site. The hy­droxy group H atom of this latter group is hydrogen bonded to an O atom of a non-coordinating diethyl ether mol­ecule. The title compound also contains a further fluorene solvent mol­ecule, which lies across a centre of symmetry and which is equally disordered over an inversion centre.

Bis(μ-2-hy­droxy­methyl-2-methyl­propane-1,3-diolato)bis­[di­chlorido­titanium(IV)] diethyl ether disolvate

The title complex, [Ti₂Cl₄{CH₃C(CH₂O)₂(CH₂OH)}₂], lies across a centre of symmetry with a diethyl ether solvent mol­ecule hydrogen bonded to the –CH₂OH groups on either side of it. The Ti^IV atom is coordinated in a distorted octa­hedral geometry by a tripodal ligand and two terminal chloride atoms. There are three coordination modes for the tripodal ligand distinguishable on the basis of their very different Ti—O bond lengths. For the terminal alkoxo ligand, the Ti—O distance is 1.760 (1) Å, the asymmetric bridge system has Ti—O bond lengths of 1.911 (1) and 2.048 (1) Å. The Ti—O bond length for the alcohol O atom is the longest at 2.148 (1) Å.