Using Bu4N[Fe(Tp*)(CN)3]- (Tp* = hydrotris(3,5-dimethylpyrazol-l-yl)borate) as the building block to react with Cun and N-methylimidazole, we obtained a one-dimensional (1D) beterobimetallic cyano-bridged chain, [Fe(Tp*)(CN)3]2Cu(N- methylimidazole)2.2H20 (1). The crystal structures and magnetic studies demonstrate that complex 1 exhibits slow relaxation of the magnetization due to strong intrachain ferromagnetic coupling and weak interchain interactions.
The assembly reactions of o- （or m-, or p-） tetrafluorobenzenedicarboxylic acid （denoted as o-H2L, m-H2L and p-HzL, respectively）, benzonitrile and Ag＋ ion led to three compounds： [Ag2（PhCN）2（o-HL）2]n （1）, [Ag2（PhCN）2（m-HL）2]n （2） and [Ag2（PhCN）2（p-L）], （3）. 1 and 2 feature a 1D coordination chain, while 3 bears a 2D net structure. A variety of weak interactions are observed in the compounds. Strong nwrinteractions connect the 1D chains into a 3D supramolecular network in 1. Hydrogen bonds connect the chains into layers in 2. Three types of interesting π-π interactions also assemble the 2D layers into a 3D overall structure in 3.
A cyanide-bridged Fei^III2Coll double zigzag chain, { [Fen1（bipy）（CN）4]2Con（btab）2}n [bipy=2,2＇-bipyridine, btab=4,4＇-（1,3-phen- ylene）-bis-4H-1,2,4-triazole] （1）, was obtained with tetracyanometalate precursors and Con ions. The chains were further linked by the ditopic btab ligands to a layer. Magnetic property studies demonstrate that 1 shows both metamagnetism with a critical field He=400 Oe and single-chain magnet behavior.
Wenjing JiangYanjuan ZhangChengqi JiaoLiang ZhaoJixiang HuJunli WangTao Liu
A new tetranuclear square compound （H3O）[Sm2Co2（CDTA）2（DMF）2 （μ4-O） （H2O）6]ClO4 was synthesized through the assembly reaction of Co2＋ , Sm3＋ and trans-1,2-cclohexylenedinitrilotetraacetic acid （H4CDTA） in aqueous solution. X-ray crystal structural analysis shows that the compound belongs to the monoclinic C2/c space group, with a=27.213（2）, b=10.5574（9）, c=19.4923（17）,β=98.799（1）°, V=5534.1（8）3 , C34H65ClCo2N6O30Sm2 , Mr=1491.93, Dc=1.791g/cm-3 , F（000）=2984,=2.820 mm-1 and Z=4. In the compound, Co2＋ is 7-coordianted while Sm3＋ is 9-coordinated. With the help of a central O2- and 8 carboxylate oxygen atoms, two Co2＋ and two Sm3＋ ions are linked into a square with the side length of 3.45 . Magnetic property was investigated.
Using Bu4N[Fe(Tp*)(CN)3]- (Tp* = hydrotris(3,5-dimethylpyrazol-1-yl)borate) as the building block to react with CuII and N-methylimidazole, we obtained a one-dimensional (1D) heterobimetallic cyano-bridged chain, [Fe(Tp*)(CN)3]2Cu(N- methylimidazole)2·2H2O (1). The crystal structures and magnetic studies demonstrate that complex 1 exhibits slow relaxation of the magnetization due to strong intrachain ferromagnetic coupling and weak interchain interactions.
