The reaction of 1-(2-pyridyl)-3-(p-tolyl)propane-1,3-dione (HL) with [Mn3O(O2CPh)6(H2O)(py)2] in CH2Cl2 affords a mixed-valence Mn3II Mn3III hexanuclear complex [Mn6O2(O2CPh)8L3] (1). Complex 1 contains a [Mn3II Mn3III (μ4 - O)2]11 + core, which is a new structural type in the family of Mn6 complexes. Variable temperature magnetic susceptibility and magnetization measurement of complex 1 have been carried out. The magnetic data indicate that complex 1 has a ground state spin value of S = 7/2 with significant magnetoanisotropy as gauged by the D value of -0.46 cm-1. The frequency dependence of the out-of-phase component in alternating current magnetic susceptibilities for complex 1 indicates the slow magnetic relaxation of a superparamagnetic molecule.
- Hexanuclear manganese complex
- Magnetic anisotropy
- Nanoscale magnet
- Single-molecule magnet
- β-diketonate ligand
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
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Yang, C. (Creator), Tsai, Y. (Creator), Chung, G. (Creator), Kuo, T. (Creator), Shieh, M. (Creator) & Tsai, H. (Creator), Unknown Publisher, 2007