title: Zirconium complex of an [OSSO]-type diphenolate ligand bearing trans-1,2-cyclooctanediylbis(thio) core: synthesis, structure, and isospecific 1-hexene polymerization.
abstract: Six-coordinated dibenzyl Zr complex bearing an [OSSO]-type tetradentate ligand was synthesized, and the structure was fully characterized by NMR spectroscopy and X-ray crystallography. The zirconium complex has C(2) symmetry in solution. Owing to an effect of the cyclooctane ring structure, the combination of the zirconium complex and B(C(6)F(5))(3) or (Ph(3)C)[B(C(6)F(5))(4)] as the activator exhibited high activity toward polymerization of 1-hexene to yield highly isotactic poly(1-hexene).
authors.affiliation: Department of Chemistry, Graduate School of Science and Engineering, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan. ishiiaki@chem.saitama-u.ac.jp
authors.forename: Akihiko
authors.initials: A
authors.lastname: Ishii
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Toda
authors.forename: Norio
authors.initials: N
authors.lastname: Nakata
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Matsuo