Condensation of CF3C(=NH)NH2 With SCl2 yielded the dithiadiazolylium salt, [CF3CNSSN]Cl which could be reduced to[CF3CNSSN](2) with Zn/Cu couple in SO2. [CF3CNSSN](2) is a diamagnetic dimer in the solid state but melts at 308 K to give a paramagnetic liquid. On cooling the radical enters a metastable state before immediately resolidifying below 295 K The thermal hysteresis was probed by EPR spectroscopy. Metastable samples spontaneously solidified after an induction period, typically between ca. 5 and 30 min, consistent with the variable time necessary to form a seed crystal from which crystallization can occur
Condensation of CF3C(=NH)NH2 With SCl2 yielded the dithiadiazolylium salt, [CF3CNSSN]Cl which could be reduced to[CF3CNSSN](2) with Zn/Cu couple in SO2. [CF3CNSSN](2) is a diamagnetic dimer in the solid state but melts at 308 K to give a paramagnetic liquid. On cooling the radical enters a metastable state before immediately resolidifying below 295 K The thermal hysteresis was probed by EPR spectroscopy. Metastable samples spontaneously solidified after an induction period, typically between ca. 5 and 30 min, consistent with the variable time necessary to form a seed crystal from which crystallization can occur