Detailed magnetic study on the formato-bridged MOFs with anion-tunable magnetic properties  

作　　者：WANG XinYi WANG ZheMing GAO Song 

机构地区：[1]State Key Laboratory of Coordination Chemistry,Nanjing National Laboratory of Microstructures,School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China [2]Beijing National Laboratory for Molecular Sciences,State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

出　　处：《Science China Chemistry》2012年第6期1055-1063,共9页中国科学(化学英文版)

基　　金：support from the National Natural Science Foundation of China (21101093, 90922033);the Natural Science Foundation of Jiangsu Province (BK2011548)

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.

关 键 词：metal formate SPIN-FLOP magnetic phase diagram PHOTODIMERIZATION 

分 类 号：O621.13[理学—有机化学]