trans-1,4-Dibromocyclohexane-1,4-dicarboxylic acid

G. A. ECHEVERRÍA; G. PUNTE; F. SIVES; E.V. BRUSAU; J.C. PEDREGOSA; G.E. NARDA; J. ELLENA

PHYSICA B - CONDENSED MATTER

Elsevier

Año: 2004 p. 377 - 380

0921-4526

An AC susceptibility study of [Nd2(O2C(CH2)4CO2)3(H2O)2] (1) obtained from a solution at ambient conditions was performed in the range 14–320 K. An ordering transition, TC=280(2) K, not related to a structural phase transition, a ferromagnetic like Curie–Weiss behavior above TC, 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.2(O2C(CH2)4CO2)3(H2O)2] (1) obtained from a solution at ambient conditions was performed in the range 14–320 K. An ordering transition, TC=280(2) K, not related to a structural phase transition, a ferromagnetic like Curie–Weiss behavior above TC, 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.