6533b855fe1ef96bd12b0016
RESEARCH PRODUCT
Titanium Complexes of Chelating Bis(phenolato) Ligands with Long Titanium−Sulfur Bonds. A Novel Type of Ancillary Ligand for Olefin Polymerization Catalysts
Hak-chul KangThomas P. SpaniolJun OkudaStefan FokkenWerner Massasubject
LigandArylOrganic ChemistryInorganic chemistrychemistry.chemical_elementNuclear magnetic resonance spectroscopyMedicinal chemistrySulfurCatalysisInorganic Chemistrychemistry.chemical_compoundchemistryPhenolChelationPhysical and Theoretical ChemistryTitaniumdescription
The sulfide-linked bis(phenol) tbmpH2 (tbmp = 2,2‘-thiobis(6-tert-butyl-4-methylphenolato)) gives a series of titanium complexes of the formula [Ti(tbmp)X2]2 or [Ti(tbmp)(L)X2] (L = two-electron ligand, X = one-electron ligand). The molecular structures of [Ti(tbmp)(OiPr)2]2 and of [Ti(tbmp){C6H4(CH2NMe2)-2}Cl] were determined by single-crystal X-ray structural analyses. An unusually long titanium−sulfur bond of ∼270 pm is observed in both complexes which contain a six-coordinate titanium center. Variable-temperature NMR spectroscopy shows a fluxional coordination of the chelating aryl group in [Ti(tbmp){C6H4(CH2NMe2)-2}Cl].
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-11-12 | Organometallics |