title: Magnetic relaxation of 1D coordination polymers (X)₂[Mn(acacen)Fe(CN)₆], X = Ph₄P⁺, Et₄N⁺.
abstract: Substitution of the organic cation X in the 1D polymer, (X)2[Mn(acacen)Fe(CN)6], leads to an essential change in magnetic behavior. Due to the presence of more voluminous Ph4P(+) cations, the polyanion has a more geometrically distorted chain skeleton and, as a consequence, enhanced single chain magnet (SCM) characteristics compared to those for Et4N(+). The Arrhenius relaxation energy barriers, the exchange interaction constant and the zero-field splitting anisotropy of Mn(III) are determined from the analysis of magnetic measurements. The discussion is supported with ligand field calculations for [Fe(CN)6](3-) that unveils the significant anisotropy of Fe magnetic moments.
authors.affiliation: Institute of Physics, Jagiellonian University , Reymonta 4, 30-059 Kraków, Poland.
authors.forename: Michał
authors.initials: M
authors.lastname: Rams
authors.forename: Eugenia V
authors.initials: EV
authors.lastname: Peresypkina
authors.forename: Vladimir S
authors.initials: VS
authors.lastname: Mironov
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Wernsdorfer
authors.forename: Kira E
authors.initials: KE
authors.lastname: Vostrikova