title: A new spin crossover heterometallic Fe(II)Ag(I) coordination polymer with the [Ag(2)(CN)(3)](-) unit: crystallographic and magnetic study.
abstract: The novel bimetallic Fe(II)Ag(I) thermal-induced spin crossover coordination polymer {Fe(II)(3,5-dimethylpyridine)(2)[Ag(I)(2)(CN)(3)][Ag(I)(CN)(2)]}(n) was synthesized by one-pot reactions between 3,5-dimethylpyridine and K[Ag(I)(CN)(2)] in the presence of Fe(II) salt (FeSO(4).(NH(4))(2)SO(4).6H(2)O). Magnetic studies demonstrate the occurrence of a spin transition. The crystal structure has been studied at 293 K and 80 K. The compound is made up of unprecedented three-dimensional networks topology of Fe(II) ions bridged by binuclear [Ag(I)(2)(CN)(3)](-) and mononuclear [Ag(I)(CN)(2)](-) units; [Ag(I)(2)(CN)(3)](-) anion is very rare. In this complex, the presence of the Ag(I) ions plays a significant role in increasing the dimensionality and cooperatively due to the triangular argentophilic interactions.
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: Yusuke
authors.initials: Y
authors.lastname: Suzuki
authors.forename: Syota
authors.initials: S
authors.lastname: Ono
authors.forename: Chikahide
authors.initials: C
authors.lastname: Kanadani
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Saito
authors.forename: Takafumi
authors.initials: T
authors.lastname: Kitazawa
mesh_terms: D018360:Crystallography, X-Ray; D003486:Cyanides / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*
chemical_list: D003486:Cyanides; D009942:Organometallic Compounds; D011108:Polymers; D012834:Silver; D007501:Iron