title: Controllable ROMP Tacticity by Harnessing the Fluxionality of Stereogenic-at-Ruthenium Complexes.
abstract: Readily accessible and easy-to-handle Ru complexes capable of generating all-Z polynorbornene and polynorbornadiene by ring-opening metathesis polymerization (ROMP) with controllable selectivity, ranging from ≈50 to ≥95% syndiotactic, are introduced. It is demonstrated that the rate of non-metathesis based polytopal isomerization and levels of syndiotacticity may be fine-tuned by the adjustment of monomer concentration and catalyst's steric and electronic characteristics.
authors.affiliation: Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA.
authors.forename: Malte S
authors.initials: MS
authors.lastname: Mikus
authors.affiliation: Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Torker
authors.affiliation: Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA. amir.hoveyda@bc.edu.
authors.forename: Amir H
authors.initials: AH
authors.lastname: Hoveyda
keywords: catalysis; olefin metathesis; polytopal rearrangement; ring-opening metathesis polymerization (ROMP); stereochemistry