A series of hybrid inorganic-organic copper(II) hydroxy n-alkylsulfonate with a triangular lattice, Cu 2(OH) 3(C nH 2n+1+SO 3) (n = 6, 8,10), are prepared by anion exchange, starting from copper hydroxy nitrate Cu 2(OH) 3NO 3. These compounds show a layered structure as determined by X-ray diffraction, with interlayer distances of 14.3-34.8 Å 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.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry