TY - JOUR
TI - Twisting, bending, stretching: strategies for making ferromagnetic [MnIII3] triangles
AU - Ross Inglis
AU - Stephanie M. Taylor
AU - Leigh F. Jones
AU - Giannis S. Papaefstathiou
AU - Spyros P. Perlepes
AU - Saiti Datta
AU - Stephen Hill
AU - Wolfgang Wernsdorfer
AU - Euan K. Brechin
JO - Dalton Transactions
PY - 2009
VL - null
TODO - 42
SP - 9157
PB - Royal Society of Chemistry (RSC)
SN - 1477-9226, 1364-5447
TODO - 10.1039/b911820a
TODO - null
TODO - The synthesis and characterisation of a large family of trimetallic
[Mn-3(III)] Single-Molecule Magnets is presented. The complexes
reported can be divided into three categories with general formulae
(type 1) [(Mn3O)-O-III(R-sao)(3)(X)(sol)(3-4)] (where R = H, Me, Bu-t;
X = -O2CR (R = H, Me, Ph etc); sol = py and/or H2O), (type 2)
[(Mn3O)-O-III(R-sao)(3)(X)(sol)(3-5)] (where R = Me, Et, Ph, Bu-t; X =
-O2CR (R = H, Me, Ph etc); sol = MeOH, EtOH and/or H2O), and (type 3)
[(Mn3O)-O-III(R-sao)(3)(sol)(3)(XO4)] (where R = H, Et, Ph, naphth;
sol = py, MeOH, beta-pic, Et-py, Bu-t-py; X = Cl, Re). We show that
deliberate structural distortions of the molecule can be used to tune
the observed magnetic properties. In the crystals the ferromagnetic
triangles are involved in extensive inter-molecular H-bonding which is
clearly manifested in the magnetic behaviour, producing exchange-biased
SMMs. These interactions can be removed by ligand replacement to give
“simpler” SMMs.
ER -