title: Spin transition at the mesophase transition temperature in a cobalt(II) compound with branched alkyl chains.
abstract: A cobalt(II) compound, [Co(C5C12C10-terpy)2](BF4)2 [C5C12C10-terpy = 4',5' ''-decyl-1' ''-(heptadecyloxy)-2,2':6',2' '-terpyridine] with branched alkyl chains, based on a terpyridine frame, was synthesized. The cobalt(II) compound exhibits a spin transition between low-spin and high-spin with a thermal hysteresis loop (T(1/2) upward arrow = 288 K and T(1/2) downward arrow = 284 K) at the liquid-crystal transition temperature. It is the first example in the cobalt(II) compounds in which the spin transition occurs at the crystal-liquid crystal transition temperature.
authors: Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-hiroshima 739-8526, Japan. hayami@ hiroshima-u.ac.jp
authors: Shinya
authors: S
authors: Hayami
authors: Reiko
authors: R
authors: Moriyama
authors: Aya
authors: A
authors: Shuto
authors: Yonezo
authors: Y
authors: Maeda
authors: Kazuchika
authors: K
authors: Ohta
authors: Katsuya
authors: K
authors: Inoue