title: Layered copper hydroxide n-alkylsulfonate salts: synthesis, characterization, and magnetic behaviors in relation to the basal spacing.
abstract: A series of hybrid inorganic-organic copper(II) hydroxy n-alkylsulfonate with a triangular lattice, Cu(2)(OH)(3)(C(n)H(2)(n)(+1)SO(3)) (n = 6, 8, 10), are prepared by anion exchange, starting from copper hydroxy nitrate Cu(2)(OH)(3)NO(3). These compounds show a layered structure as determined by X-ray diffraction, with interlayer distances of 14.3-34.8 A in alternation with interdigitated bilayer packing. Magnetic properties have been investigated by means of dc and ac measurements. All the compounds show similar metamagnet behaviors, with a Neel temperature of about 11 K. A subtle difference in the ac magnetic susceptibility among the compounds is understood by the existence of hydrogen bonding between the sulfonate headgroup and the hydroxide anion. A detailed molecular structure of the alkyl chains incorporated to the inorganic copper hydroxide layer is also discussed from the FTIR data.
authors.affiliation: Institute for Nano Science and Department of Physics, Korea University, Seoul 136-701, Korea.
authors.forename: Seong-Hun
authors.initials: SH
authors.lastname: Park
authors.forename: Cheol Eui
authors.initials: CE
authors.lastname: Lee
mesh_terms: D003300:Copper / Q000737:chemistry; D006878:Hydroxides / Q000138:chemical synthesis / Q000737:chemistry; D008280:Magnetics; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry; D033362:Powder Diffraction; D012680:Sensitivity and Specificity; D013055:Spectrophotometry, Infrared / Q000379:methods; D013451:Sulfonic Acids / Q000138:chemical synthesis / Q000737:chemistry; D013696:Temperature
chemical_list: D006878:Hydroxides; D009942:Organometallic Compounds; D013451:Sulfonic Acids; C508959:copper hydroxide; D003300:Copper