Synthesis, characterization and magnetic properties of [Mn30O24(OH)(8)(O2CCH2C(CH3)(3))(32)(H2O)(2)(CH3NO2)(4)]: the largest manganese carboxylate cluster

Soler, M; Rumberger, E; Folting, K; Hendrickson, DN; Christou, G


We report the synthesis, structure and magnetic properties of a new member of the family of high nuclearity Mn clusters. The complex [Mn30O24(OH)(8)(O2CCH2C(CH3)(3))(32)(H2O)(2)(CH3NO2)(4)] (1), is the highest nuclearity manganese duster to date. Complex 1 was obtained from the comproportionation reaction between Mn(OAc)(2). 4H(2)O and KMnO4, followed by ligand substitution with Me3CCH2CO2H. It is mixed-valent with a trapped-valence 3Mn(II), 26Mn(III), Mn-IV oxidation state description. Dc magnetic susceptibility studies indicate an S = 7 ground state, and ac susceptibility studies show an out-of-phase susceptibility signal below 3 K, indicating complex 1 to display the slow magnetization relaxation diagnostic of a single-molecule magnet. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Título según WOS: ID WOS:000169804400040 Not found in local WOS DB
Título de la Revista: POLYHEDRON
Volumen: 20
Número: 11-14
Fecha de publicación: 2001
Página de inicio: 1365
Página final: 1369


Notas: ISI