TY - JOUR
T1 - Single-molecule magnets constructed from cyanometalates
T2 - {[Tp*Fe III(CN)3MII(DMF)4] 2[OTf]2}·2DMF (MII = Co, Ni)
AU - Li, Dongfeng
AU - Parkin, Sean
AU - Wang, Guangbin
AU - Yee, Gordon T.
AU - Prosvirin, Andrey V.
AU - Holmes, Stephen M.
PY - 2005/7/11
Y1 - 2005/7/11
N2 - Treatment of several divalent transition-metal trifluoromethane-sulfonates [MII(OTf)2; MII = Mn, Co, Ni] with [NEt 4][Tp*FeIII(CN)3] [Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate] in DMF affords three isostructural rectangular clusters of {[Tp*FeIII(CN)3M II(DMF)4]2-[OTf]2}·2DMF (MII = Mn, 3; Co, 4; Ni, 5) stoichiometry. Magnetic studies of 3-5 indicate that the Tp*Fe(CN)3- centers are highly anisotropic and exhibit antiferromagnetic (3 and 4) and ferromagnetic (5) exchange to afford S = 4, 2, and 3 spin ground states, respectively. ac susceptibility measurements suggest that 4 and 5 exhibit incipient single-molecule magnetic behavior below 2 K.
AB - Treatment of several divalent transition-metal trifluoromethane-sulfonates [MII(OTf)2; MII = Mn, Co, Ni] with [NEt 4][Tp*FeIII(CN)3] [Tp* = hydridotris(3,5-dimethylpyrazol-1-yl)borate] in DMF affords three isostructural rectangular clusters of {[Tp*FeIII(CN)3M II(DMF)4]2-[OTf]2}·2DMF (MII = Mn, 3; Co, 4; Ni, 5) stoichiometry. Magnetic studies of 3-5 indicate that the Tp*Fe(CN)3- centers are highly anisotropic and exhibit antiferromagnetic (3 and 4) and ferromagnetic (5) exchange to afford S = 4, 2, and 3 spin ground states, respectively. ac susceptibility measurements suggest that 4 and 5 exhibit incipient single-molecule magnetic behavior below 2 K.
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U2 - 10.1021/ic048367i
DO - 10.1021/ic048367i
M3 - Article
C2 - 15998014
AN - SCOPUS:22644435755
SN - 0020-1669
VL - 44
SP - 4903
EP - 4905
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 14
ER -