Rotational conformers of m-methoxybenzyl radical in a supersonic jet
文献信息
Kosaku Sakeda, Tadashi Suzuki, Yoshihisa Matsushita, Teijiro Ichimura
The laser induced fluorescence (LIF) excitation spectrum of m-methoxybenzyl radical generated by ArF laser photolysis in a supersonic jet has been observed for the first time. The origin bands in the D1 ← D0 transition are found to be 19 993.0 cm−1 and 19 648.3 cm−1 for the cis and trans conformers, respectively, arising from the orientation of the methoxy group with respect to the methylene group at the meta position. The existence of the rotational conformers was ensured by analyzing the single vibronic level (SVL) dispersed fluorescence spectra with the aid of ab initio calculation. The prominent vibronic bands observed in the LIF excitation and SVL dispersed fluorescence spectra for each conformer were successfully assigned. A significant difference between the conformers was found for their band intensities and frequencies in the observed spectra. The difference will be discussed in terms of intramolecular interaction between the ring carbon atom and the hydrogen atom of the methoxy group.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










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