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ABSTRACT:
SUBMITTER: Lohmiller T
PROVIDER: S-EPMC9293181 | biostudies-literature | 2021 Dec
REPOSITORIES: biostudies-literature
Lohmiller Thomas T Sarkar Sujan K SK Tatchen Jörg J Henkel Stefan S Schleif Tim T Savitsky Anton A Sanchez-Garcia Elsa E Sander Wolfram W
Chemistry (Weinheim an der Bergstrasse, Germany) 20210912 71
o-Tolylmethylene 1 is a metastable triplet carbene that rearranges to o-xylylene 2 even at temperatures as low as 2.7 K via [1,4] H atom tunneling. Electron paramagnetic resonance (EPR) and electron nuclear double resonance (ENDOR) spectroscopical techniques were used to identify two conformers of 1 (anti and syn) in noble gas matrices and in frozen organic solutions. Conformer-specific kinetic measurements revealed that the rate constants for the rearrangements of the anti and syn conformers of ...[more]