Excess electrons in lithium–ethylamine solutions—density, electrical conductivity and EPR studies
文献情報
The density, electrical conductivity and electron paramagnetic resonance (EPR) of the lithium–ethylamine system have been measured as a function of metal concentration and temperature. The obtained data have been discussed with emphasis on the comparison with those of alkali metal–ammonia or –methylamine solutions which have been well studied in view of the metal–nonmetal transition. Although lithium metal was dissolved into ethylamine up to 18–20 mol% metal, the observed conductivity was nonmetallic, dissimilar to the corresponding ammonia and methylamine systems. From the observed spectral linewidth of EPR it has been suggested that the hyperfine interaction with nitrogen nuclei is dominant in the electron spin–spin relaxation in the concentration range studied. The integrated intensity data of EPR have been analyzed in terms of the spin-pairing equilibrium of excess electrons in the solutions. It is concluded that excess electrons in Li–ethylamine solutions are more strongly localized than those in ammonia or methylamine solutions which exhibit electron delocalization with increasing metal concentration.
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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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