title: Coexistence of magnetic and electric orderings in the metal-formate frameworks of [NH4][M(HCOO)3].
abstract: A family of three-dimensional chiral metal-formate frameworks of [NH(4)][M(HCOO)(3)] (M = Mn, Fe, Co, Ni, and Zn) displays paraelectric to ferroelectric phase transitions between 191 and 254 K, triggered by disorder-order transitions of NH(4)(+) cations and their displacement within the framework channels, combined with spin-canted antiferromagnetic ordering within 8-30 K for the magnetic members, providing a new class of metal-organic frameworks showing the coexistence of magnetic and electric orderings.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, PR China.
authors.forename: Guan-Cheng
authors.initials: GC
authors.lastname: Xu
authors.forename: Wen
authors.initials: W
authors.lastname: Zhang
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Ma
authors.forename: Yi-Hong
authors.initials: YH
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Hong-Ling
authors.initials: HL
authors.lastname: Cai
authors.forename: Zhe-Ming
authors.initials: ZM
authors.lastname: Wang
authors.forename: Ren-Gen
authors.initials: RG
authors.lastname: Xiong
authors.forename: Song
authors.initials: S
authors.lastname: Gao
mesh_terms: D004583:Electrons; D005561:Formates / Q000737:chemistry*; D008280:Magnetics; D019216:Metals, Heavy / Q000737:chemistry*; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*
chemical_list: D005561:Formates; D019216:Metals, Heavy; D009942:Organometallic Compounds; D000644:Quaternary Ammonium Compounds; C030544:formic acid