BROWSE

Related Scientist

Researcher

김경환
나노물질 및 화학반응 연구단
more info

Identifying the major intermediate species by combining time-resolved X-ray solution scattering and X-ray absorption spectroscopy

Cited 3 time in webofscience Cited 0 time in scopus
479 Viewed 19 Downloaded
Title
Identifying the major intermediate species by combining time-resolved X-ray solution scattering and X-ray absorption spectroscopy
Author(s)
Kyung Hwan Kim; Kim J.; Key Young Oang; Lee J.H.; Grolimund D.; Milne C.J.; Penfold T.J.; Johnson S.L.; Galler A.; Tae Wu Kim; Jong Goo Kim; Deokbeom Suh; Moon J.; Kim J.; Hong K.; Guerin L.; Kim T.K.; Wulff M.; Bressler C.; Hyotcherl Ihee
Publication Date
2015-08
Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.17, no.36, pp.23298 - 23302
Publisher
ROYAL SOC CHEMISTRY
Abstract
Identifying the intermediate species along a reaction pathway is a first step towards a complete understanding of the reaction mechanism, but often this task is not trivial. There has been a strong on-going debate: which of the three intermediates, the CHI2 radical, the CHI2–I isomer, and the CHI2 + ion, is the dominant intermediate species formed in the photolysis of iodoform (CHI3)? Herein, by combining time-resolved X-ray liquidography (TRXL) and time-resolved X-ray absorption spectroscopy (TR-XAS), we present strong evidence that the CHI2 radical is dominantly formed fromthe photolysis of CHI3 in methanol at 267 nm within the available time resolution of the techniques (B20 ps for TRXL andB100 ps for TR-XAS). The TRXL measurement, conducted using the time-slicing scheme, detected no CHI2–I isomer within our signal-to-noise ratio, indicating that, if formed, the CHI2–I isomer must be a minor intermediate. The TR-XAS transient spectra measured at the iodine L1 and L3 edges support the same conclusion. The present work demonstrates that the application of these two complementary time-resolved X-ray methods to the same system can provide a detailed understanding of the reaction mechanism. © the Owner Societies 2015
URI
https://pr.ibs.re.kr/handle/8788114/2179
ISSN
1463-9076
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
Files in This Item:
201508_Identifying the major intermediate species by combining time-resolved X-ray solution scattering and X-ray absorption spectroscopy.pdfDownload

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