Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis

Bimetallic bis-urea functionalized salen-aluminum catalysts have been developed for cyclic carbonate synthesis from epoxides and CO<sub>2</sub>. The urea moiety provides a bimetallic scaffold through hydrogen bonding, which expedites the cyclic carbonate formation reaction under mild rea...

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Main Authors:	Wooyong Seong, Hyungwoo Hahm, Seyong Kim, Jongwoo Park, Khalil A. Abboud, Sukwon Hong
Format:	Article
Language:	English
Published:	MDPI AG 2021-07-01
Series:	Molecules
Subjects:	aluminum bimetallic catalyst salen urea self-assembled cyclic carbonate
Online Access:	https://www.mdpi.com/1420-3049/26/13/4097

id	doaj-1c86b2d23e2d46d8b1280bacaf0151d8
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spelling	doaj-1c86b2d23e2d46d8b1280bacaf0151d82021-07-15T15:43:05ZengMDPI AGMolecules1420-30492021-07-01264097409710.3390/molecules26134097Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates SynthesisWooyong Seong0Hyungwoo Hahm1Seyong Kim2Jongwoo Park3Khalil A. Abboud4Sukwon Hong5Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju 61005, KoreaDepartment of Chemistry, Gwangju Institute of Science and Technology, Gwangju 61005, KoreaDepartment of Chemistry, Gwangju Institute of Science and Technology, Gwangju 61005, KoreaDepartment of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL 32611-7200, USADepartment of Chemistry, University of Florida, P.O. Box 117200, Gainesville, FL 32611-7200, USADepartment of Chemistry, Gwangju Institute of Science and Technology, Gwangju 61005, KoreaBimetallic bis-urea functionalized salen-aluminum catalysts have been developed for cyclic carbonate synthesis from epoxides and CO<sub>2</sub>. The urea moiety provides a bimetallic scaffold through hydrogen bonding, which expedites the cyclic carbonate formation reaction under mild reaction conditions. The turnover frequency (TOF) of the bis-urea salen Al catalyst is three times higher than that of a μ-oxo-bridged catalyst, and 13 times higher than that of a monomeric salen aluminum catalyst. The bimetallic reaction pathway is suggested based on urea additive studies and kinetic studies. Additionally, the X-ray crystal structure of a bis-urea salen Ni complex supports the self-assembly of the bis-urea salen metal complex through hydrogen bonding.https://www.mdpi.com/1420-3049/26/13/4097aluminumbimetallic catalystsalenureaself-assembledcyclic carbonate
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Wooyong Seong Hyungwoo Hahm Seyong Kim Jongwoo Park Khalil A. Abboud Sukwon Hong
spellingShingle	Wooyong Seong Hyungwoo Hahm Seyong Kim Jongwoo Park Khalil A. Abboud Sukwon Hong Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis Molecules aluminum bimetallic catalyst salen urea self-assembled cyclic carbonate
author_facet	Wooyong Seong Hyungwoo Hahm Seyong Kim Jongwoo Park Khalil A. Abboud Sukwon Hong
author_sort	Wooyong Seong
title	Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis
title_short	Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis
title_full	Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis
title_fullStr	Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis
title_full_unstemmed	Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis
title_sort	self-assembled bimetallic aluminum-salen catalyst for the cyclic carbonates synthesis
publisher	MDPI AG
series	Molecules
issn	1420-3049
publishDate	2021-07-01
description	Bimetallic bis-urea functionalized salen-aluminum catalysts have been developed for cyclic carbonate synthesis from epoxides and CO<sub>2</sub>. The urea moiety provides a bimetallic scaffold through hydrogen bonding, which expedites the cyclic carbonate formation reaction under mild reaction conditions. The turnover frequency (TOF) of the bis-urea salen Al catalyst is three times higher than that of a μ-oxo-bridged catalyst, and 13 times higher than that of a monomeric salen aluminum catalyst. The bimetallic reaction pathway is suggested based on urea additive studies and kinetic studies. Additionally, the X-ray crystal structure of a bis-urea salen Ni complex supports the self-assembly of the bis-urea salen metal complex through hydrogen bonding.
topic	aluminum bimetallic catalyst salen urea self-assembled cyclic carbonate
url	https://www.mdpi.com/1420-3049/26/13/4097
work_keys_str_mv	AT wooyongseong selfassembledbimetallicaluminumsalencatalystforthecycliccarbonatessynthesis AT hyungwoohahm selfassembledbimetallicaluminumsalencatalystforthecycliccarbonatessynthesis AT seyongkim selfassembledbimetallicaluminumsalencatalystforthecycliccarbonatessynthesis AT jongwoopark selfassembledbimetallicaluminumsalencatalystforthecycliccarbonatessynthesis AT khalilaabboud selfassembledbimetallicaluminumsalencatalystforthecycliccarbonatessynthesis AT sukwonhong selfassembledbimetallicaluminumsalencatalystforthecycliccarbonatessynthesis
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Self-Assembled Bimetallic Aluminum-Salen Catalyst for the Cyclic Carbonates Synthesis

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