BROWSE

Related Scientist

CCHF's photo.

CCHF
분자활성 촉매반응 연구단
more info

ITEM VIEW & DOWNLOAD

Understanding the mechanism of direct visible-light-activated [2+2] cycloadditions mediated by Rh and Ir photocatalysts: combined computational and spectroscopic studies

Cited 0 time in webofscience Cited 0 time in scopus
20 Viewed 0 Downloaded
Title
Understanding the mechanism of direct visible-light-activated [2+2] cycloadditions mediated by Rh and Ir photocatalysts: combined computational and spectroscopic studies
Author(s)
Hoimin Jung; Mannkyu Hong; Marchini, Marianna; Villa, Marco; Steinlandt, Philipp S.; Huang, Xiaoqiang; Hemming, Marcel; Meggers, Eric; Ceroni, Paola; Jiyong Park; Mu-Hyun Baik
Publication Date
2021-07
Journal
CHEMICAL SCIENCE, v.12, no.28, pp.9673 - 9681
Publisher
ROYAL SOC CHEMISTRY
Abstract
The mechanism of [2 + 2] cycloadditions activated by visible light and catalyzed by bis-cyclometalated Rh(iii) and Ir(iii) photocatalysts was investigated, combining density functional theory calculations and spectroscopic techniques. Experimental observations show that the Rh-based photocatalyst produces excellent yield and enantioselectivity whereas the Ir-photocatalyst yields racemates. Two different mechanistic features were found to compete with each other, namely the direct photoactivation of the catalyst-substrate complex and outer-sphere triplet energy transfer. Our integrated analysis suggests that the direct photocatalysis is the inner working of the Rh-catalyzed reaction, whereas the Ir catalyst serves as a triplet sensitizer that activates cycloaddition via an outer-sphere triplet excited state energy transfer mechanism.
URI
https://pr.ibs.re.kr/handle/8788114/10114
DOI
10.1039/d1sc02745j
ISSN
2041-6520
Appears in Collections:
Center for Catalytic Hydrocarbon Functionalizations(분자활성 촉매반응 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse