Phenylene-Bridged OSSO-Type Titanium Complexes in the Polymerization of Ethylene and Propylene.

ABSTRACT: The dichloro titanium complexes (OSSO _tBu)TiCl₂ (1) and (OSSO_Cum)TiCl₂ (2) bearing o-phenylene-bridged OSSO-type ligands [OSSO _tBu-H = 6,6'-((1,2-phenylenebis(sulfanediyl))bis(methylene))bis(2,4-di-tert-butyphenol) and OSSO_Cum-H = 6,6'-((1,2-phenylenebis(sulfanediyl))bis(methylene))bis(2,4-bis(2-phenylpropan-2-yl)phenol)] were prepared and characterized. The X-ray structure of 1 revealed that Ti atom has an octahedral coordination geometry with an fac-fac wrapping of the [OSSO] ligand. In solution at 25 °C, 1 mainly retains the C ₂ symmetric structure, whereas 2 shows an equilibrium between C ₂- and C

SUBMITTER: Lapenta R 

PROVIDER: S-EPMC6645219 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature