Abstract
Reacting [MnIII(5-TMAM(R)-salmen)(H2O)2](ClO4)3·H2O with [MIII(CN)6]3− moieties yields a series of discrete cyano-bridged heterodinuclear complexes, [MnIII(5-TMAM(R)-salmen)(H2O)MIII(CN)6]·7H2O·MeCN (where 5-TMAM(R)-salmen=(R)-N,N′-(1-methylethylene)bis(5-trimethylammoniomethylsalicylideneiminate; M=Fe (1), Mn (2), and Cr (3)). dc magnetic susceptibility and magnetization studies on powdered samples showed that the MnIII(5-TMAM(R)-salmen) moiety had significant uniaxial anisotropy and that [MIII(CN)6]3− moieties of 1 and 2 had magnetic anisotropy due to unquenched orbital angular momenta, which significantly affects the magnetic behavior of this system. Frequency-dependent ac susceptibility signals indicated that slow magnetic relaxation was occurring, meaning that 1 and 2 behave as single-molecule magnets.
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