An EPR/ENDOR study of the reduction products of symmetrical isomers of dipyridylacetylene

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Publication Date
DOI 10.1039/A902689D
Impact Factor 3.676
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Abstract

The reduction potentials of the three symmetrical isomers (para–para, ortho–ortho and meta–meta) of dipyridylacetylene were measured by cyclic voltametry. These compounds were reacted on alkali metal mirrors and the resulting radical anions were studied by electron paramagnetic resonance/electron–nuclear double resonance/triple resonance spectroscopies. The reduction products were identified after comparison of the measured hyperfine couplings with those predicted by density functional theory calculations. The mono-radical anion was observed for the two former isomers [coupling with the counter ion was detected for the ion pair (ortho–ortho)-39K+]; the third isomer led to the radical anion of dipyridylethylene.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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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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