Premium
In Situ Generation of Co III –Salen Complexes for Copolymerization of Propylene Oxide and CO 2
Author(s) -
Hatazawa Masahiro,
Nakabayashi Koji,
Ohkoshi Shinichi,
Nozaki Kyoko
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602546
Subject(s) - copolymer , epoxide , propylene oxide , chemistry , polymer chemistry , ammonium , oxide , catalysis , organic chemistry , ethylene oxide , polymer
A simple admixture of Co II –salcy complexes with [Cp 2 Fe III ]PF 6 resulted in reproduction of the results with isolated Co III –salcy complexes in the copolymerization of epoxide and carbon dioxide. By using this in situ‐generated active species with bis(triphenylphosphoranilydene)ammonium 2,4‐dinitrophenolate, a para ‐methoxy‐substituted Co–salcy complex was proven to be more active than the parent tert ‐butyl‐substituted system. In contrast, the Co II –salcy complex substituted with the more strongly electron‐donating NMe 2 group did not show any activity for this copolymerization.