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In Situ Generation of Co<sup>III</sup>–Salen Complexes for Copolymerization of Propylene Oxide and CO<sub>2</sub>
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- Masahiro Hatazawa
- Department of Chemistry and Biotechnology Graduate School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
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- Koji Nakabayashi
- Department of Chemistry School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
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- Shin‐ichi Ohkoshi
- Department of Chemistry School of Science The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
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- Kyoko Nozaki
- Department of Chemistry and Biotechnology Graduate School of Engineering The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
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Description
<jats:title>Abstract</jats:title><jats:p>A simple admixture of Co<jats:sup>II</jats:sup>–salcy complexes with [Cp<jats:sub>2</jats:sub>Fe<jats:sup>III</jats:sup>]PF<jats:sub>6</jats:sub> resulted in reproduction of the results with isolated Co<jats:sup>III</jats:sup>–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 <jats:italic>para</jats:italic>‐methoxy‐substituted Co–salcy complex was proven to be more active than the parent <jats:italic>tert</jats:italic>‐butyl‐substituted system. In contrast, the Co<jats:sup>II</jats:sup>–salcy complex substituted with the more strongly electron‐donating NMe<jats:sub>2</jats:sub> group did not show any activity for this copolymerization.</jats:p>
Journal
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- Chemistry – A European Journal
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Chemistry – A European Journal 22 (38), 13677-13681, 2016-07-26
Wiley
