Oscillating Non‐Metallocenes – from Stereoblock‐Isotactic Polypropylene to Isotactic Polypropylene via Zirconium and Hafnium Dithiodiphenolate Catalysts

Author:

Cohen Ad1,Goldberg Israel1,Venditto Vincenzo2,Kol Moshe1

Affiliation:

1. School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel, Fax: +972‐3‐6409293

2. Dipartimento di Chimica, Università di Salerno, Via Ponte don Melillo, 84084 Fisciano (SA), Italy

Publisher

Wiley

Subject

Inorganic Chemistry

Reference42 articles.

1. Fluxional complexes featuring a combination of a single‐active conformation and inactive conformations (resting states) are not included in this definition.

2. Fluxional catalysts in which the flip of the ligands and the insertion of the monomer are “geared” are a distinct class. For example bis(phenoxyimine) titanium catalysts invert chirality‐at‐metal between (enantioselective) propylene insertions which leads to syndiotactic polypropylene. See: H. Makio H. Terao A. Iwashita T. Fujita Chem. Rev.2011 111 2363 and references therein.

3. Discrete, Multiblock Isotactic–Atactic Stereoblock Polypropene Microstructures of Differing Block Architectures through Programmable Stereomodulated Living Ziegler–Natta Polymerization

4. Polypropylene “Chain Shuttling” at Enantiomorphous and Enantiopure Catalytic Species:  Direct and Quantitative Evidence from Polymer Microstructure

5. For fluxional catalysts exhibiting octahedral–tetrahedral isomerism see:

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