title: Synthesis, structure and physical properties of a low dimensional compound.
abstract: The crystal structure of (μ3-oxo)hexakis(cyanoacetato-κO,O')(cyanoacetato-κO)diaquatriiron(III) cyanoacetic acid shows the formation of trinuclear complexes in a hydrogen-bond network that bonds all the molecules in a 3D arrangement. For this complex, within whose clusters the whole magnetic interaction takes place,57Fe Mössbauer spectroscopy shows that the Fe cations are in the S=5/2 state in the temperature range 2-295K. The asymmetric broadening of the absorption peaks below 80K is consistent with strong antiferromagnetic interactions between the metal spins. The magnetization measurements also show the antiferromagnetic character of the spin ensemble and an ST=1/2 magnetic ground state typical of triangular systems with similar J between Fe-Fe pairs.
authors.affiliation: CFisUC, Department of Physics, University of Coimbra, Rua Larga, P-3004-516 Coimbra, Portugal. Electronic address: manuela@pollux.fis.uc.pt.
authors.forename: Manuela
authors.initials: M
authors.lastname: Ramos Silva
authors.affiliation: Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal.
authors.forename: Joana T
authors.initials: JT
authors.lastname: Coutinho
authors.affiliation: Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal.
authors.forename: Laura C J
authors.initials: LC
authors.lastname: Pereira
authors.affiliation: CFisUC, Department of Physics, University of Coimbra, Rua Larga, P-3004-516 Coimbra, Portugal; Higher Polytechnic School of Huesca, University of Zaragoza, Ctra. Cuarte s/n, 22071 Huesca, Spain.
authors.forename: Pablo
authors.initials: P
authors.lastname: Martín-Ramos
authors.affiliation: Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Bobadela LRS, Portugal.
authors.forename: João C
authors.initials: JC
authors.lastname: Waerenborgh
keywords: AFM interaction; Cyanoacetate complex; Low dimensional compound; Trinuclear Fe(III) complex