title: Cobalt diphosphonate with a new double chain structure exhibiting field-induced magnetic transition.
abstract: A cobalt diphosphonate Co(H(2)O){C(5)H(5)N-CH(2)CH(OH)(PO(3))(PO(3)H)} (1) has been synthesized under hydrothermal conditions. It shows a novel type of double chain structure in which one of the two CPO(3) terminus caps on top of the {Co(2)(micro-O)2} dimer while the other connects the adjacent {Co(2)(micro-O)2} dimers into a chain. The magnetization measurements reveal that dominant antiferromagnetic interactions are mediated between the magnetic centers and the compound experiences a field-induced magnetic transition at low temperature with H(c) of ca. 15 kOe at 1.8 K.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Zai-Chao
authors.initials: ZC
authors.lastname: Zhang
authors.forename: Song
authors.initials: S
authors.lastname: Gao
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Zheng
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004164:Diphosphonates / Q000737:chemistry*; D008280:Magnetics; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D013696:Temperature
chemical_list: D004164:Diphosphonates; D009942:Organometallic Compounds; D003035:Cobalt