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11.
采用[(Tp)Fe(CN)3]-(Tp=hydrotris(pyrazolyl)borate)与[NiL](ClO4)2(L=3,10-bis(2-bydroxyethyl)-1,3,5,8,10,12-hexaazacyclotetra-decane)反应,合成了氰根桥联的异金属三核配合物[NiL][(Tp)Fe(CN)3]2·4H2O(1),并对其结构和磁性进行了研究.该化合物晶体属于正交晶系,Pbca空间群.配合物1中,Ni(Ⅱ)大环与2 [(Tp)re(CN)3]-通过氰根桥联,形成近似直线的三核结构.Ni原子的配位采取六配位稍畸变的八面体构型.其中大环配体上的4个N原子占据赤道平面而桥联氰根的2个N原子占据轴向位置.磁性测定表明在2-300 K的温度范围内,Ni(Ⅱ)和Fe(Ⅲ)之间通过桥联的氰根产生弱的铁磁相互作用.用哈密顿函数H=-2J(SFel·SNi SFe2·SNi)对其XMT-T曲线进行了拟合,得到1的朗德因子g=2.35和交换常数J=8.13 cm-1.最后,对配合物的结构与磁性的关系进行了讨论. 相似文献
12.
Synthesis and Structural Characterization of a Cyano-bridged Dinuclear Neodymium(III)-iron(III) Complex [Nd(DMSO)5(H2O)2](μ-CN)[Fe(CN)5] 总被引:1,自引:1,他引:0
A new neodymiumIII-ironIII complex [Nd(DMSO)5(H2O)2](μ-CN)[Fe(CN)5] (DMSO = dimethyl sulfoxide) has been synthesized by the grinding reaction method. The crystal belongs to monoclinic, space group P21/m with a = 8.859(4), b = 13.684(5), c = 12.290(4) A, β = 91.85(2)o, C16H34FeN6NdO7S5, Mr = 782.88, V = 1489(1)A3, Z = 2, Dc = 1.746 g/cm3, S = 0.906, μ(MoKα) = 2.606 mm-1, F(000) = 788, R = 0.0646 and wR = 0.1654. The slightly distorted square-antiprism eightfold-coordinated Nd(III) and approximately oriented octahedrally sixfold- coordinated Fe(III) are linked by a cyano-bridge group to construct a dinuclear compound. The [Nd(DMSO)5(H2O)2](μ-CN)[Fe(CN)5] species are held together via hydrogen bonds to form a three-dimensional framework. 相似文献
13.
具有不同自旋态的磁性双稳态材料因在存储器件和分子开关领域具有广泛的应用前景而备受关注。本文报道了一种基于WⅤ-CoⅡ电荷转移过程的新型磁性双稳态化合物。通过将4-((2-萘-1-基)乙烯基)吡啶(4-nvp)引入氰基桥接的WⅤ-CoⅡ层框架中,合成了一例氰基桥联二维双金属网络配合物{[WⅤ(CN)8]2[CoⅡ(4-nvp)4]3}·4CH3OH (1),其中辅助配体4-nvp可以提供分子内和分子间π-π相互作用。磁性研究结果表明,化合物1表现出可逆的电子转移耦合诱导自旋转变行为(ETCST)。该过程使体系自旋态由WⅤ—CN—CoⅡHS(HS=高自旋)变到WⅣ—CN—CoLSⅢ(LS=低自旋),并伴随着宽度为27 K的... 相似文献
14.
稀土氯化物SmCl3(6H2O与K3Fe(CN)6在水/乙醇/DMSO混合溶剂中反应合成了标题化合物: SmFe(CN)6(DMSO)2(H2O(C10H14N6O3S2FeSm, Mr = 536.59),晶体属单斜晶系,空间群 P2/n,a = 7.759(1), b = 10.673(1),c = 11.014(2)?,β= 97.106(2)(,V = 905.0(2)? 3, Z = 2 , Dc = 1.969 g/cm3, F(000)= 520,R = 0.0474 , wR = 0.0925。该化合物为氰基桥联稀土-过渡金属化合物,稀土离子(Sm3+)为7配位的五角双锥构型。化合物的结构可描述为由方砖铺砌成的楼梯状二维层结构,层之间由氢键连接沿b轴方向堆积而成三维网状结构。 相似文献
15.
A new cyano-bridged GadoliniumⅢ-IronⅢ complex {[Gd(DMF)3(DMSO)(H2O)3](μ-CN)[Fe(CN)5]}·2H2O (DMF=N,N-dimethylformamide; DMSO=dimethylsulfoxide) was synthesized by the grinding reaction method. It crysta-llizes in the triclinic, space group P1 with cell parameters: a=0.90363(2) nm, b=1.250 78(3) nm, c=1.41303(1) nm, α=93.174(1)°, β=94.406(1)°, γ=91.817(2)°, and V=1.588 87(5) nm3, Dc=1.582 g·cm-3, Z=2, Mr=756.72, F(000)=760, μ=2.645 mm-1. The slightly distorted square-antiprism eightfold-coordinated Gd(Ⅲ) and the approxi-mately oriented octahedrally sixfold-coordinated Fe(Ⅲ) are linked by a cyano-bridge group to construct a dinuclear compound. The {[Gd(DMF)3(DMSO)(H2O)3](μ-CN)[Fe(CN)5]} species are held together via hydrogen bonds to form a three-dimensional framework. The Gd(Ⅲ)-Fe(Ⅲ) interaction is antiferromagnetic. CCDC: 223430. 相似文献
16.
ZHAO Zhen-Qian CAI Li-Zhen CHEN Wen-Tong GUO Guo-Cong ② HUANG Jin-Shun 《结构化学》2008,27(6):753-756
Two new bimetallic cyano-bridged complexes [Ln(DMSO)2(H2O)(μ-CN)4Fe(CN)2] (Ln = Ce 1, Eu 2) have been prepared by the grinding reaction method and structurally characterized by X-ray single-crystal structure analysis. Crystallographic data for 1: C10H14CeFeN6O3S2, Mr = 526.36, monoclinic, P2/n, a = 7.852(4), b = 10.729(5), c = 11.181(5)A,β = 96.992(8)°, V = 935.0(7) A^3, Z = 2, Dc = 1.870 g/cm^3,/1 = 3.421 mm^-1, F(000) = 512, R = 0.0363 and wR = 0.0971; and those for 2: C10H14EuFeN6O3S2, Mr = 538.20, monoclinic, P21n, a = 7.739(5), b = 10.668(7), c = 11.008(7) A,β = 96.943(3)°, V = 902.1(11) A^3, Z = 2, Dc = 1.981 g/cm^3,/1 = 4.499 mm^-1, F(000) = 522, R = 0.0345 and wR = 0.0855. In each complex the lanthanide ion is seven-coordinated in a pentagonal bipyramidal arrangement, and the Fe(Ⅲ) ion is in a nearly regular octahedral environment. The title complexes can be described as two- dimensional (2-D) stair-like structures, which are further connected by hydrogen bonds to form three-dimensional (3-D) frameworks. 相似文献
17.
将(Et4N)3Mn(CN)6和Cu(en)2(ClO4)2反应得到了三维配位聚合物{[Cu(Ⅱ)(en)2*H2O][Cu(I)2(CN)4]}n(en=乙二胺),用元素分析、ICP分析、IR光谱对配合物进行了表征.X-射线衍射结果表明晶体属单斜晶系,空间群为Cc(#9),晶胞参数a=14.759(3),b=7.734(2),c=14.247(3)(A),β=112.65(3)°,V=1500.9(5)(A)3,Z=4,Dc=1.916Mg*m-3,F(000)=868,最终偏离因子R1=0.0267,wR2=0.0633.该配合物结构中Cu(I)离子间通过氰基桥联形成三维峰窝样主体骨架结构,而Cu(Ⅱ)配离子[Cu(en)2*H2O]2+被包合在主体内架通道空腔的中央.该配合物的合成是利用[Cu(CN)2]-为建筑砖块,[Cu(en)2*H2O]2+为模板的自组装反应. 相似文献
18.
合成了两个氰基桥连的异金属配位聚合物[{Mn(dpa)2}2W(CN)8·CH3CN·4H2O]n(1)和[Mn2(H2O)4{W(CN)8}·3H2O]n(2),并对它们进行了结构和磁性表征.X-射线单晶结构分析表明,在化合物1中,W2(CN)4Mn2四核片段通过公共的[W(CN)8]^4-离子相互连接,形成一个无限延伸的一维链状结构.化合物2的结构较为复杂,是一个含有一维孔道(约13.21A×11.82A)的三维网状结构.磁性研究表明,在两种化合物中,相邻的两个锰离子之间抗磁性的八氰基配离子均传递非常微弱的反铁磁相互作用. 相似文献
19.
A novel heterobimetallic coordination polymer, {(NH4)2[Cd(H2O)Fe(CN)6]}n 1, has been synthesized by using the slow diffusion method and structurally characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. The crystal crystallizes in the monoclinic system, space group P21/n, a = 7.4202(16), b = 14.939(3), c = 10.868(2) A and ? = 91.660(3)A. For 1, five CN groups of Fe(CN)6]4- are involved in bridging. The polymer displays a 3D open microporous framework with 5-connected uninodal(46.64) topology. 相似文献
20.
采用[(Tp)Fe(CN)3]-(Tp=hydrotris(pyrazolyl)borate)与Mn(Ac)2·4H2O反应,合成了氰根桥联的异金属三核配合物[Mn(phen)2][(Tp)Fe(CN)3]2·5H2O (1)(phen=1,10-phenanthroline),并对其结构和磁性进行了研究。晶体结构分析结果表明该化合物晶体属于三斜晶系,P1空间群。在该配合物中,Mn(Ⅱ)与2个phen分子及2个[(Tp)Fe(CN)3]-配位,形成一种弯曲的三核结构。磁性测量结果表明,Mn(Ⅱ)和Fe(Ⅲ)之间通过氰根桥联产生弱的反铁磁相互作用。 相似文献