Pressure effects on magnetic bistability in a heterocyclic thiazyl radical TTTA

We studied the pressure effects on l,3,5-trithia-2,4,6-triazapentalenyl (TTTA), which exhibits paramagnetic–diamagnetic bistability in the range between Tc↓=230 K and Tc↑=305 K at ambient pressure. The bistable temperature range shifted toward high temperatures with dTc↑/dp=20±10 K GPa−1 and dTc↓/dp=45±20 K GPa−1 at p=0 GPa, hence the room-temperature bistability was stabilized by pressure.