title: Organic two-step spin-transition-like behavior in a linear S = 1 array: 3'-methylbiphenyl-3,5-diyl bis(tert-butylnitroxide) and related compounds.
abstract: The title compound showed a unique low-dimensional array with S = 1 molecules. The intermolecular antiferromagnetic coupling and intramolecular ferromagnetic coupling are simultaneously present, and accordingly, the S = 1/2 state appeared at 230-350 K between the diamagnetic phase and the paramagnetic S = 1 phase. The solid-solid phase transition occurred in a single-crystal-to-single-crystal manner. The corresponding 3'-methoxy derivative is also presented for comparison.
authors.affiliation: Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan.
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Nishimaki
authors.forename: Takayuki
authors.initials: T
authors.lastname: Ishida