Trapping of metastable high-spin species and weak cooperativity in a mononuclear Fe(II) spin-crossover system

Lattice trapping of metastable quintet s

Lattice trapping of metastable quintet state bis(2,6-bis(pyrazol-3-yl)pyridine)iron(II) bis(tetrafluoroborate), a spin crossover system, and kinetics of the quintet-singlet transformation

✍ Harold A. Goodwin; Kristian H. Sugiyarto 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 393 KB

The 'Tz% 'A, spin transition in [ Fe( bpp),][ BF412 (bpp= 2,6-bis( pyrazol-3-yl)pyridine) is abrupt and complete and shows hysteresis with the transition temperatures r,r = 173 K and T,t = 183 K. Rapid cooling of the sample causes the freezing-in of metastable quintet state species at low temperatur