High-Spin Organic Diradical with Robust Stability

Triplet ground-state organic molecules are interesting with respect to several emerging technologies but typically exhibit limited stability. We report two organic diradicals, one of which possesses a triplet ground state (2J/k(B) = 234 +/- 36 K) and robust stability at elevated temperatures. We are able to sublime this high-spin diradical under high vacuum at 140 degrees C with no significant decomposition.