Homobinuclear complex （HCuL）2 （1） （H3L： N-3-carboxylsalicylidene-N＇-salicylaldehyde-1,2-diaminoethane） was obtained from self-organization of the reported complex HCuL, and its crystal structure was determined...Homobinuclear complex （HCuL）2 （1） （H3L： N-3-carboxylsalicylidene-N＇-salicylaldehyde-1,2-diaminoethane） was obtained from self-organization of the reported complex HCuL, and its crystal structure was determined through X-ray diffraction at room temperature. The crystal of complex 1 belongs to monolinic system, the space group Cc, a=2.5326（5） nm, b=0.88861（18） nm, c=1.3738（3） nm, β=96.95（3）°, Z=4, R1=0.0520, wR2=0.1185. （HCuL）2 is a dimeric molecule and has extended phenolic oxygen-bridged structure. In addition, using mononuclear complex HCuL as building blocks, Cu（Ⅱ）-Mg（Ⅱ）-Cu（Ⅱ） heterotrinuclear complex 2 was synthesized, and its crystal structure also has been determined by X-ray analysis. The crystal of complex 2 is of monoclinic system, space group Pc, a=1.1816（2） nm, b=1.5599（3） nm, c=1.9642 （4） nm, β=98.22°, Z=2, R1=0.0701, wR2=0.1498. Each dissymmetricai cell unit of complex 2 contains two heterotrinucler neutral molecules： {[CuL（H2O）]Mg[CuL（CH3OH）]} and {[CuL]Mg[CuL（H2O）]}.展开更多
The crystal structure and variable temperature magnetic susceptibility of [(dien)Cu(H_2O) (μ-im)Co(NH_3)_4(μ-im) (H_2O)Cu(dien](NO_3)_5~1) have been determined.The complex crystallizes in the mon- oelinic system.In ...The crystal structure and variable temperature magnetic susceptibility of [(dien)Cu(H_2O) (μ-im)Co(NH_3)_4(μ-im) (H_2O)Cu(dien](NO_3)_5~1) have been determined.The complex crystallizes in the mon- oelinic system.In the cation,the imidazolate ligands connect one Co(Ⅲ) and two Cu(Ⅱ) stoma,forming an imidazolates-bridged heterotrinuclear complex.Co(Ⅲ) atom is of a regular octahedral configuration and Cu(Ⅱ) atoms are of distorted square pyramid configuration.The cations are connected by hydrogen bonds through NO_3-anions forming infinite chains.The fit to magnetic susceptibility data for powder sample over temperature range 1.8-300 K shows that there is a weak antiferromagnetic exchange interaction between Cu(Ⅱ) ions in cation.The exchange mechanism has been discussed.展开更多
The title compound [Ni(bipy)3][(-oxo)Fe2Cl6] (bipy = 2, 2?bispyridine) was synthesized and its crystal structure was determined by X-ray diffraction method. It crystallizes in monoclinic, space group P2l/c with unit c...The title compound [Ni(bipy)3][(-oxo)Fe2Cl6] (bipy = 2, 2?bispyridine) was synthesized and its crystal structure was determined by X-ray diffraction method. It crystallizes in monoclinic, space group P2l/c with unit cell parameters: a = 9.7085(7),b = 26.409(2), c = 14.014(1) ,?= 100.237(3), V = 3535.9(2) 3,Z = 4,C30H24Cl6Fe2N6NiO,Mr = 867.66, Dc = 1.630 g/cm3,F(000) = 1744, (MoK? = 1.824 mm-1, the final R = 0.0394 and wR = 0.0475 for 2750 observed reflections with I ≥ 2(I). The title compound contains cation of [Ni(bipy)3]2+ and anion of [(-oxo)Fe2Cl6] 2- which consists of two [FeCl3] fragments connected by an oxo bridge with the bond distances of Fe(2)O(1) 1.752(2) and Fe(1)O(1) 1.763(2) , and the bond angle of Fe(2)O(1)Fe(1) 148.6(2)? In the [Fe2(-oxo)Cl6]2- complex, the two iron(Ⅲ) centers exhibit a tetrahedral coordination with the distorted tetrahedron formed by three Cl atoms and one oxo bridge.展开更多
Two heterotrinuclear complexes bridging by thiocyanate were synthesized,and characterized by elemental analysis,infrared,molar conductance and thermal analysis.The studies of Variable Temperature magnetic susceptibili...Two heterotrinuclear complexes bridging by thiocyanate were synthesized,and characterized by elemental analysis,infrared,molar conductance and thermal analysis.The studies of Variable Temperature magnetic susceptibilities indicated that [Cu(1.2 pn) 2] 2[Mn(NCS) 4(H 2O) 2](NCS) 2 exhibited ferromagnetic exchange interaction and 2[Mn(NCS) 4(H 2O) 2](NCS) 2 antiferromagnetic exchange interaction.展开更多
基金Project supported by the Natural Science Foundation of Henan Province （No. 0311020800）.
文摘Homobinuclear complex （HCuL）2 （1） （H3L： N-3-carboxylsalicylidene-N＇-salicylaldehyde-1,2-diaminoethane） was obtained from self-organization of the reported complex HCuL, and its crystal structure was determined through X-ray diffraction at room temperature. The crystal of complex 1 belongs to monolinic system, the space group Cc, a=2.5326（5） nm, b=0.88861（18） nm, c=1.3738（3） nm, β=96.95（3）°, Z=4, R1=0.0520, wR2=0.1185. （HCuL）2 is a dimeric molecule and has extended phenolic oxygen-bridged structure. In addition, using mononuclear complex HCuL as building blocks, Cu（Ⅱ）-Mg（Ⅱ）-Cu（Ⅱ） heterotrinuclear complex 2 was synthesized, and its crystal structure also has been determined by X-ray analysis. The crystal of complex 2 is of monoclinic system, space group Pc, a=1.1816（2） nm, b=1.5599（3） nm, c=1.9642 （4） nm, β=98.22°, Z=2, R1=0.0701, wR2=0.1498. Each dissymmetricai cell unit of complex 2 contains two heterotrinucler neutral molecules： {[CuL（H2O）]Mg[CuL（CH3OH）]} and {[CuL]Mg[CuL（H2O）]}.
文摘The crystal structure and variable temperature magnetic susceptibility of [(dien)Cu(H_2O) (μ-im)Co(NH_3)_4(μ-im) (H_2O)Cu(dien](NO_3)_5~1) have been determined.The complex crystallizes in the mon- oelinic system.In the cation,the imidazolate ligands connect one Co(Ⅲ) and two Cu(Ⅱ) stoma,forming an imidazolates-bridged heterotrinuclear complex.Co(Ⅲ) atom is of a regular octahedral configuration and Cu(Ⅱ) atoms are of distorted square pyramid configuration.The cations are connected by hydrogen bonds through NO_3-anions forming infinite chains.The fit to magnetic susceptibility data for powder sample over temperature range 1.8-300 K shows that there is a weak antiferromagnetic exchange interaction between Cu(Ⅱ) ions in cation.The exchange mechanism has been discussed.
基金Supported by the foundation of Education Committee of Fujian Province (JB01045)
文摘The title compound [Ni(bipy)3][(-oxo)Fe2Cl6] (bipy = 2, 2?bispyridine) was synthesized and its crystal structure was determined by X-ray diffraction method. It crystallizes in monoclinic, space group P2l/c with unit cell parameters: a = 9.7085(7),b = 26.409(2), c = 14.014(1) ,?= 100.237(3), V = 3535.9(2) 3,Z = 4,C30H24Cl6Fe2N6NiO,Mr = 867.66, Dc = 1.630 g/cm3,F(000) = 1744, (MoK? = 1.824 mm-1, the final R = 0.0394 and wR = 0.0475 for 2750 observed reflections with I ≥ 2(I). The title compound contains cation of [Ni(bipy)3]2+ and anion of [(-oxo)Fe2Cl6] 2- which consists of two [FeCl3] fragments connected by an oxo bridge with the bond distances of Fe(2)O(1) 1.752(2) and Fe(1)O(1) 1.763(2) , and the bond angle of Fe(2)O(1)Fe(1) 148.6(2)? In the [Fe2(-oxo)Cl6]2- complex, the two iron(Ⅲ) centers exhibit a tetrahedral coordination with the distorted tetrahedron formed by three Cl atoms and one oxo bridge.
文摘Two heterotrinuclear complexes bridging by thiocyanate were synthesized,and characterized by elemental analysis,infrared,molar conductance and thermal analysis.The studies of Variable Temperature magnetic susceptibilities indicated that [Cu(1.2 pn) 2] 2[Mn(NCS) 4(H 2O) 2](NCS) 2 exhibited ferromagnetic exchange interaction and 2[Mn(NCS) 4(H 2O) 2](NCS) 2 antiferromagnetic exchange interaction.
