UV-induced single and double hydrogen-atom migrations in 3,6-diimino-1,4-cyclohexadiene-1,4-diamine in a low-temperature argon matrix

Autor:	Munetaka Nakata, Kenji Ujike, Satoshi Kudoh
Rok vydání:	2005
Předmět:	Photoisomerization Hydrogen bond General Physics and Astronomy Hydrogen atom Photochemistry chemistry.chemical_compound Crystallography chemistry Intramolecular force Diamine Physical and Theoretical Chemistry 1 4-Cyclohexadiene Spectroscopy Isomerization
Zdroj:	Chemical Physics Letters. 409:52-56
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2005.04.096
Popis:	Isomerization induced by ultraviolet radiation due to intramolecular hydrogen-atom migration in 3,6-diimino-1,4-cyclohexadiene-1,4-diamine (DCD) was studied by matrix-isolation Fourier transform infrared (IR) spectroscopy and density functional theory (DFT) calculation. Two isomers produced by single and double inversion of the hydrogen atom(s) around the C N bond(s) were identified using the wavelength dependence of the IR band-intensity changes. In addition, the IR bands of an intermediate produced by single hydrogen-atom transfer from the amino to the imino group ( C – NH 2 ⋯ NH C ) in the hydrogen bond were measured and identified by a comparison with the calculated spectral patterns. These observations confirm stepwise photoisomerization of DCD.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a094dc5fbc8c7a18cfc6faa5d800d3fb https://doi.org/10.1016/j.cplett.2005.04.096 Zobrazit plný text záznamu Full Text from ScienceDirect