Dynamic Structural Conversion In A Spin-crossover Cobalt(Ⅱ) Compound With Long Alkyl Chains

摘要

A cobalt(Ⅱ) compound [Co(C14-terpy)_2](BF_4)_2 MeOH (1) with long alkyl chains was prepared, and exhibited unique SCO at T_1 = 50 K and spin transition at T_2 ↑ = 206 K and T_2↓ = 184 K with hysteresis (Δ T = 22 K) accompanying the motion of the long alkyl chains.rnFlexible molecules are at the focus of materials research for the construction of molecular devices for polymers, films, gels and liquid crystals.Such flexible molecules are very interesting from the point of view in not only functional materials but novel physical properties and has stimulated us for the construction of metal complexes with long alkyl chains to combine such flexibility with central metal complexes. Flexible metal complexes with long alkyl chains may exhibit a synchronicity between the central metal complexes and the long alkyl chains.