Thermal hysteresis in dithiadiazolyl and dithiazolyl radicals induced by supercooling of paramagnetic liquids close to room temperature: a study of F3CCNSSN and an interpretation of the behaviour of F3CCSNSCCF3

The trifluoromethyl-substituted dithiadiazolyl and dithiazolyl radicals, F3CCNSSN (I) and F3CCSNSCCF3 (II) assoc. through p*-p* covalent and electrostatic Sd+...Nd- interactions in the solid state, but melt with a dramatic vol. increase to generate paramagnetic liqs.; these radicals exhibit thermal hysteresis, which arises through a meta-stable super-cooled liq. state, close to room temp. [on SciFinder (R)]


Published in:
Chemical Communications, 17, 1836-1837
Year:
2002
Laboratories:




 Record created 2006-02-15, last modified 2018-01-27


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