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The Influence of C(sp3 )H-Selenium Interactions on the 77 Se NMR Quantification of the π-Accepting Properties of Carbenes.

  • Author(s): Junor, Glen P;
  • Lorkowski, Jan;
  • Weinstein, Cory M;
  • Jazzar, Rodolphe;
  • Pietraszuk, Cezary;
  • Bertrand, Guy
  • et al.

Selenium NMR has become a standard tool for scaling the π-accepting character of carbenes. Herein, we highlight that non-classical hydrogen bonding (NCHB), likely resulting from hyperconjugation, can play a significant role in the carbene-selenium 77 Se NMR chemical shift, thus triggering a non-linear behavior of the Se-Scale.

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