草酰胺(酸)桥联配合物研究进展

概述了近二十年来草酰胺(酸)桥联配合物研究进展.该类化合物无论在分子设计或是分子磁性材料研究中都具有非常重要的作用.     

乙二胺双缩3-醛基水杨酸Schiff碱铜镍异双核配合物的晶体结构

合成了乙二胺双缩3-醛基水杨酸Sch iff碱铜镍异双核配合物CuN i(ES)(H2O)2.H2O[H4ES为N,N′-二(3-醛基水杨酸)缩乙撑二胺],用单晶X-ray衍射法测定了晶体结构,该晶体属六方晶系,空间群P322I,晶胞参数a=1.283 90(18)nm,b=1.283 90(18)nm,c=0.995 7(2)nm,α=90°,β=90°,γ=120°,V=1.421 4(4)nm3,C18H18CuN iN2O9,Mr=528.59,Z=3,ρ=1.853 g/cm3.在配合物中,Cu处于由两个氮原子和两个酚氧原子所形成的平面四方场中,N i处于由两个酚氧原子、两个羧基氧原子和两个轴向水分子氧所形成的六配位变形八面体场中,且内部铜原子和外部镍原子通过两个酚氧原子桥联起来.     

Hydrothermal Synthesis and Crystal Structure of One 3D Coordination Polymer of Nickel(Ⅱ) Achieved from 5-Iodo-isophthalic Acid Ligand

A new coordination polymer [Ni(L)(m-bix)(H2O)]n(1, H2L = 5-iodo-isophthalic acid, m-bix = 1,3-bis(imidazol-1-ylmethyl)-benzene) has been synthesized by the hydrothermal method and characterized by IR, elemental analysis, powder XRD and single-crystal X-ray analysis. The crystal is of triclinic, space group P1 with a = 9.1638(3), b = 10.2319(3), c = 13.2463(4) ?, α = 80.1710(10), β = 83.671(2), γ = 70.3790(10)o, C22H19NiIN4O5, Mr = 605.02, V = 1150.85(6) ?3, Dc = 1.746 g/cm3, F(000) = 600, μ = 2.225 mm-1, S = 1.045 and Z = 2. The final R = 0.0388 and wR = 0.1257 for 5089 observed reflections with I 2σ(I). In the title complex, the M and P layers are arranged alternately to give a double-layer structure by the symmetry related hydrogen bonds, and these double-layers are further joined together to achieve a 2D supramolecular architecture through I···π interaction involving iodine atoms and imidazole rings. The thermal stability of the title complex was studied by thermal gravimetric(TG) and differential thermal analysis(DTA).     

新型不对称双Schiff碱Cu(Ⅱ),Zn(Ⅱ)异三核配合物的合成和晶体结构

新型不对称双Schiff碱Cu(Ⅱ);Zn(Ⅱ)异三核配合物的合成和晶体结构;羟基水杨醛;不对称双Schiff碱     

不对称草酰胺桥联异三核配合物{[Ni(oxbe)]2Cu(H2O)2}·2.5DMF的合成和晶体结构

合成了不对称草酰胺桥联异三核配合物{[Ni(oxbe)]2Cu(H2O)2}2.5DMF [H3oxbe为N-(2-羧基苯)-N-(2-氨乙基)草酰胺]。用单晶X-射线衍射法测定了其晶体结构。该晶体属单斜晶系,空间群C2/c,晶胞参数a = 22.590(7),b = 17.341(4),c = 10.900(3) ,β= 115.80(2),V = 3844.1(18) 3, Ni2CuC29.5H41.5N8.50O12.5, Mr = 896.17, Z = 4,Dc = 1.5481g/cm3,μ(MoKα) = 1.588 mm-1,F(000) = 1852,R = 0.0534,wR = 0.1334(I>2(I)), 2051个可观察衍射点。此三核配合物的结构单元具有中心对称性, 铜离子位于中心由6个氧原子构成的八面体中,2个镍离子则分别位于两端处在由N3O构成的近似平面正方场中,中心Cu2+与两端的Ni2+通过草酰胺阴离子桥联在一起。     

基于4-甲基邻苯二甲酸和4,4′-联吡啶混合配体的镉的配合物的合成、结构及荧光性质

通过Cd(OAc)₂·2H₂O与4-甲基邻苯二甲酸(H₂L)及4,4′-联吡啶(bpy)在水热条件下反应得到一个新型的配位聚合物{[Cd(L)(bpy)(H₂O)₂·2H₂O]}_n(1), 并用元素分析, 红外, 热重, 粉末衍射及单晶X-射线分析法对配合物的结构进行了表征。配合物首先展示二维层状的网络结构, 再进一步通过丰富的氢键堆积成三维超分子结构, 另外, 本文还研究了该配合物的荧光性质。