Molecular tailoring of spin-transition materials: preparation, crystal structure and magnetism of trifluoromethyl-pyridyl-1,3,2-dithiazolyl

• DOI: 10.1039/c0ce00893a
• Publication Date: 2011-01-31T10:01:38Z
• Authors: Antonio Alberola; Dana J. Eisler; Laura Harvey; Jeremy M. Rawson
• Keywords: Diamagnetism; Magnetism

The α-phase of pyridyl-1,3,2-dithiazolyl, pyDTA, has previously been shown to exhibit a distorted π-stacked structure which is diamagnetic at low temperature. Unlike other dithiazolyl radicals it does not undergo first order phase transition regular paramagnetic even upon warming its melting point. Here we show that incorporation trifluoromethyl group destabilises the π*–π* dimer and title compound (1) exhibits spin-transition (without hysteresis) 50 K.