title: Unprecedented three-step spin-crossover transition in new 2-dimensional coordination polymer {Fe(II)(4-methylpyridine)(2)[Au(I)(CN)(2)](2)}.
abstract: A new spin crossover (SCO) coordination polymer, {[Fe(II)(4-methylpyridine)(2)][Au(I)(CN)(2)](2)}(n) () has been synthesized. The complex () has been observed to have a thermal induced three-step SCO transition, which is unprecedented behavior as compared with existing SCO complexes. In the complex, about 18%, 41% and 41% high spin states are changed to low spin states in the first-step, second-step and third-step, respectively.
authors.affiliation: Department of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kosone
authors.forename: Itaru
authors.initials: I
authors.lastname: Tomori
authors.forename: Chikahide
authors.initials: C
authors.lastname: Kanadani
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Saito
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Mochida
authors.forename: Takafumi
authors.initials: T
authors.lastname: Kitazawa
mesh_terms: D006046:Gold / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D009942:Organometallic Compounds; D011108:Polymers; D006046:Gold; D007501:Iron