Polymeric chains, hydrogen bonds and magnetism in Nd(III) adipates

摘要

An AC susceptibility study of [Nd-2(O2C(CH2)(4)CO2)(3)(H2O)(2)] (1) obtained from a solution at ambient conditions was performed in the range 14-320 K. An ordering transition, T-C 280(2) K, not related to a structural phase transition, a ferromagnetic like Curie-Weiss behavior above T-C, an antiferromagnetic like dependence of chi'(-1) at the lowest temperatures and a non-linear thermal dependence of chi'(-1) in the in-between region have been observed. Samples prepared by hydration of 1 during different periods showed enhancement of the observed features. Links between water content, crystal structure and magnetic response are discussed. (C) 2004 Elsevier B.V. All rights reserved.