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

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

PHYSICA B - CONDENSED MATTER

ELSEVIER

Lugar: Amsterdam; Año: 2004 vol. 354 p. 377 - 380

0921-4526

Abstract An AC susceptibility study of [Nd2(O2C(CH2)4CO2)3(H2O)2] obtained from solution at ambient conditions was performed in the range 14-320K. An ordering transition at Tc=280(2)K, not related to a structural phase transition, a ferromagnetic like Curie-Weiss behavior above Tc,, an antiferromagnetic  like dependence of c´-1 at the lowest temperatures an a non-linear thermal dependence of  c´-1  in the in-between region have been observed. Samples prepared by dehydration of 1 during different periods showed enhancement of the observed features. Links between water content, crystal structure and magnetic response are discussed.  © 2004 Elsevier B.V. All rights reservedKeywords:  Molecular magnet; Low-dimmensional magnetism; Nd(III) coordination complex; Hydrogen bond network