Tautomerism in Reduced Pyrazinacenes.

Roberto Scipioni1, Mauro Boero1, Gary J Richards1

  • 1WPI Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan, Max Planck Institute for Polymer Research, Mainz, Ackermannweg 10, 55124, Germany, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 CNRS-University of Strasbourg, 23 rue du Loess, F-67034 Strasbourg, France, Computational Materials Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 Japan, and Fuel Cell Materials Center, Nanoionics Group, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.

Summary

NH tautomerism in pyrazinacenes was investigated. Proton transfer lowers energy barriers and alters electronic structure, with stability influenced by proton position and molecular length, showing an odd-even effect.

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