title: Structure and magnetism of a Mn(III)-Mn(II)-Mn(II)-Mn(III) chain complex.
abstract: A novel tetranuclear manganese(II/III) complex with anions of pyridine-2,6-dicarboxylic acid (dipicolinic acid) has been synthesised and magneto-structurally characterised. The crystal structure of [Mn(II)2Mn(III)2(dipic)6(H2O)4]·2CH3OH·4H2O has been determined by single-crystal X-ray diffraction. The tetranuclear complex molecule [Mn(II)2Mn(III)2(dipic)6(H2O)4] is centrosymmetric and two manganese(II) and two manganese(III) atoms are bridged by four dipicolinate ligands. The complex molecules and uncoordinated water and methanol molecules are connected through hydrogen bonds and they form a 3D supramolecular hydrogen-bonding network.
authors: Institute of Inorganic Chemistry, FCHPT, Slovak University of Technology, Bratislava 812 37, Slovakia. robert.uhrecky@stuba.sk
authors: Róbert
authors: R
authors: Uhrecký
authors: Ján
authors: J
authors: Moncoľ
authors: Marian
authors: M
authors: Koman
authors: Ján
authors: J
authors: Titiš
authors: Roman
authors: R
authors: Boča
mesh_terms: D060526:Magnetic Fields; D008345:Manganese / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010848:Picolinic Acids / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D010848:Picolinic Acids; D008345:Manganese; C004860:dipicolinic acid