2026-05-05T20:43:30Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/650512025-02-20T12:22:54Zcom_10324_28542com_10324_952com_10324_894col_10324_28543

Pérez Ortega, Ignacio Albéniz Jiménez, Ana Carmen 2024-01-25T19:04:04Z 2024-01-25T19:04:04Z 2022 Chem. Sci., 2022, 13, 1823–1828 2041-6520 https://uvadoc.uva.es/handle/10324/65051 10.1039/D1SC07028B 1823 6 1828 Chemical Science 13 2041-6539 A new polynorbornene skeleton has been found that contains bicyclic norbornane units and cyclohexenyl methyl linkages. The polymers have been synthesized using a nickel catalyst in the presence of a controlled amount of ligands with low or moderate coordination ability. The backbone structure is the result of a vinylic addition polymerization, via sequential insertions of norbornene into a Ni–C bond (bicyclic units) combined with an unusual ring opening of the norbornene structure by a b-C elimination (cyclohexenyl methyl units) to give a new Ni–C(alkyl) bond that continues the polymerization. The ring opening events are favored when the rate of propagation of the vinylic addition polymerization decreases, and this can be modulated by making the coordination of norbornene to the metal center less favorable using additional ligands. Ministerio de Ciencia e Innovación/AEI; Grant PID2019-111406GB-I00 Junta de Castilla y León-FEDER; Grant VA224P20 application/pdf spa Royal Society of Chemistry info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional Química Polymerization norbornene C-C cleavage nickel 23 Química A different polynorbornene backbone by combination of two polymer growth pathways: vinylic addition and ring opening via β-C elimination info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://pubs.rsc.org/en/content/articlelanding/2022/sc/d1sc07028b SI