摘要
Detailed studies of the structures, magnetic properties and photodimerization of a series of formato-bridged MOFs with the general formula M2(HCOO)3(4,4'-bpe)3(H20)3(X) (4,4'-bpe = 4,4'-bipyridylethylene, M = Mn (l-X-), X- = CIO4, NO3, BF4, I-, Br-; M = Co (2-X-), X- = C104, NO3; M = Zn (3-X-), X- = NO3) were reported. Careful magnetic measurements on an ori- ented single crystal of 1-C104 determined the spin-flop magnetic phase diagram and some intrinsic parameters, such as the in- tralayer coupling d, the anisotropy field HA and the exchange field HE. Different anions can remarkably tune the magnetic properties of l-X-, especially the critical fields of the spin-flop transition. Compound 2-C104 remained paramagnetic down to 2K.
Detailed studies of the structures, magnetic properties and photodimerization of a series of formato-bridged MOFs with the general formula M2(HCOO)3(4,4′-bpe)3(H2O)3(X) (4,4′-bpe = 4,4′-bipyridylethylene, M = Mn (1-X-), X- = ClO4-, NO3-, BF4-, I-, Br-; M = Co (2-X-), X- = ClO4-, NO-3; M = Zn (3-X-), X- = NO3-) were reported. Careful magnetic measurements on an ori- ented single crystal of 1-ClO4- determined the spin-flop magnetic phase diagram and some intrinsic parameters, such as the intralayer coupling J, the anisotropy field HA and the exchange field HE. Different anions can remarkably tune the magnetic properties of 1-X-, especially the critical fields of the spin-flop transition. Compound 2-ClO4- remained paramagnetic down to 2 K.
基金
support from the National Natural Science Foundation of China (21101093, 90922033)
the Natural Science Foundation of Jiangsu Province (BK2011548)
