Ultrafast electron diffraction: complex landscapes of molecular structures in thermal and light-mediated reactions

Autor:	Ramesh Srinivasan, Ahmed H. Zewail, Boyd M. Goodson, Vladimir A. Lobastov, Chong-Yu Ruan
Rok vydání:	2003
Předmět:	Chemistry Ultrafast electron diffraction Resolution (electron density) General Physics and Astronomy Ring (chemistry) Photochemistry Bond length Molecular geometry Electron diffraction Chemical physics biological sciences Molecule Physical and Theoretical Chemistry Cope rearrangement
Zdroj:	Chemical Physics Letters. 374:417-424
ISSN:	0009-2614
DOI:	10.1016/s0009-2614(03)00803-0
Popis:	Complex reactions involve the transformation of molecular structures with many atoms. Ultrafast electron diffraction is developed here to directly observe such transient structures. The level of complexity is demonstrated for both the thermal and light-mediated reactions involving the electrocyclic Cope bond rearrangement and ring opening of 1,3,5-cyclooctatriene. For the former, we determine the ground-state structures, and for the later we observe the transient structures in their non-equilibrium state. The selective structural determination reported here using pulse sequences would not have been possible without the high sensitivity and spatio-temporal resolution of ultrafast electron diffraction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b71dd380f1c6157ea9b288093a5a2831 https://doi.org/10.1016/s0009-2614(03)00803-0 Zobrazit plný text záznamu Full Text from ScienceDirect