二茂铁双酰腙化合物的合成及电化学性质

以二茂铁双酰肼为原料,合成出两个二茂铁基酰腙类物质,通过元素分析、IR、1H NMR等分析手段确定了化合物的组成;电化学研究表明,化合物a在高电位区有两个不可逆氧化峰,应是酰腙活性基团被氧化的结果,通过量化计算,得到了化合物a的稳定结构。     

双核钒酰腙配合物的合成与表征

氧化还原性质;双核钒酰腙配合物的合成与表征     

二茂铁基苯酰腙的d区金属螯合物的合成和表征

二茂铁基苯酰腙与d区金属乙酸盐或氯化物在乙醇中反应,得到了6个新的螯合物,分子式为M(Fcbh)n[Fcbh=Fc—C=N—N=C-C_6H_5,Fc=C_5H_5—FeC_5H_4;M=Cr(Ⅲ)、Fe(Ⅲ)时,n=3;M=Mn(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)时,n=2]和Pd(Fcbh—H)_2Cl_2[Fcbh—H=Fc—C=N—NHCOC_6H_5]通过元素分析,红外光谱,H核磁共振谱和质谱,确定了螯合物的组成和结构。描述了二茂铁基苯酰腙配体与d区金属的两种不同的配位方式。     

香草醛—N—酰腙类化合物的合成与表征

Ｓｃｈｉｆｆ碱类化合物和酰腙类化合物大多具有除草,杀菌等生物活性,已有一些报道［１,２］,对该类化合物的深入研究是当今农药界热点之一,表明此类化合物具有广阔的开发前景。据文献报道［１］,香草醛与芳胺反应生成的Ｓｃｈｉｆｆ碱类化合物具有优异的促进植物生根性。为寻求新的具有生物活性的物质,我们采用香草醛与酰肼反应,合成了３种未见报道的酰腙类化合物。其结构经ＩＲ,１ＨＮＭＲ和元素分析证实。合成反应如下：３—ＣＨ３Ｏ—４—ＨＯＣ６Ｈ３ＣＨＯ＋Ｈ２ＮＮＨＣＯ—Ｒ３—ＣＨ３Ｏ—４—ＨＯＣ６Ｈ３ＣＨＮＮＨＣＯ…     

二茂铁酰腙镍配位聚合物热解产物的表征

二乙酰二茂铁间苯二甲酰腙与NiCl₂·6H₂O在DMSO中反应合成了二乙酰二茂铁间苯二甲酰腙镍配位聚合物(PFZNi)，将其在空气中高温(500～1 200 ℃)热解，并用XRD、XPS、SEM和超导量子强磁计(SQUID)对热解产物进行表征。结果表明，产物是一种纳米NiFe₂O₄·Fe₃O₄混合型反尖晶石结构的铁磁相固溶体。在5 K及300 K时，产物有较高的饱和磁化强度(分别为42.57和39.05 emu·g^-1)和较低的剩磁(分别为6.87和6.27 emu·g^-1)，其磁参数随热解温度而增加。     

对苯双酰腙类化合物的合成与表征

以对苯二甲酸为起始原料,设计合成了5个新型的对苯双酰腙类化合物,其结构经1H NMR,MS和元素分析表征。     

钒酰腙配合物的合成、结构及生物活性

以酰腙为配体钒的单核、双核配合物因其结构丰富、生物活性多样而引起广泛关注。目前该领域新配合物的合成、表征和生物活性的研究甚为活跃。本文回顾了近年来钒酰腙配合物的研究状况,主要从以下三个方面进行综述：(1)钒酰腙配合物的合成方法;(2)此类配合物的配位模式;(3)一些单、双核钒酰腙配合物抗变形虫,抗肿瘤,类胰岛素,抑制Na⁺, K⁺-ATP酶,与DNA作用的生物活性。文中着重阐述了钒酰腙化合物的结构和生物活性之间的关系。此外,还提出了钒酰腙配合物研究领域的不足之处并对其今后发展方向进行了展望。     

双（1—甲基—1—水杨酰腙乙基）二茂铁和它与Pb（Ⅱ）的配合物

由于芳酰腙和它与金属的配合物在生物体系和分析化学中有重要用途,引起了化学家的广泛研究兴趣。A.M.Hundekar 等和zhao Gang 等已分别报道了 N-乙酰基-N-苯酰腙基二茂铁和双(1-甲基-1-苯酰腙乙基)     

4种含羧基酰腙化合物的合成、表征和抑菌活性

4种含羧基酰腙化合物的合成、表征和抑菌活性;酰腙;合成;表征;抑菌活性     

几种三维镧系配位聚合物的合成、结构表征及其性质测定

在水热条件下合成了四个氨三乙酸配合物[Ln(NTA)(H2O)]n(Ln=Sm(III)、Gd(III)、Dy(III)和Er(III);NTA=氨三乙酸),分别标记为1、2、3和4;利用元素分析、红外光谱和X射线单晶衍射等对其进行了结构表征.结果表明,配合物1-4同晶同构,中心原子采取N1O7的配位模式形成扭曲的十二面体几何构型.配合物以菱形四面体Ln8C14O28为基本构筑块,通过O—C—O和氢键形成有序的三维结构.此外,四个配合物均存在镧系收缩效应;配合物1显示出反铁磁性,配合物2对Hg2+有良好的荧光选择性.     

二茂铁配位高分子吸波材料的合成与性能表征

本文以二茂铁为原料,经独特的分子设计,将导电的共轭基团引入二茂铁高分子化合物中,再使分子中共轭基团和金属原子M配位,合成既含"磁性"基元的金属原子离域结构,又有"导电"基元的茂环和共轭取代基组成的大共轭体系的新一类高分子化合物。研究结果表明这种新型的二茂铁高分子材料具有较好的吸波性能。     

Nonlinear optical material of a low-dimensional coordination polymer: Synthesis, structure, NLO and fluorescence properties

Employing unsymmetrical 2-mercapto-5-methyl-1,3,4-thiadiazole and 2,2′-bipyridine as mixed ligands, a new low-dimensional coordination polymer [Zn(MMTA) 2 (2,2′-bipy)] n (MMTA = 2-mercapto-5-methyl-1,3,4-thiadiazole, 2,2′-bipy = 2,2′-bipyridine), has been synthesized under solvothermal condition and characterized by single crystal X-ray diffraction. This compound crys- tallizes in the noncentrosymmetric space group Cc, with cell parameters: a = 8.291(4) , b = 15.483(9) , c = 15.620(6) , = 96.00(5)°, V = 1994.1(2) 3 , and Z = 4. The mixed ligands link the zinc center into a mononuclear unit, which is futher linked by weak C-H···N and C-H···S hydrogen bonds into a three-dimensional noncentrosymmetric framework. The compound exhibits intense photoluminescence and distinct NLO properties at room temperature. The intensity of the green light produced by the powder sample of the compound is about 3.2 times that produced by KDP powder. On the basis of the results of TG analysis, the structure is thermally stable up to ～260 °C.     

A lanthanum pyromellitate coordination polymer with three-dimensional structure

A new three-dimensional metal-organic coordination polymer, [La₂(H₂O)₂(H₂BTEC)(BTEC)], 1, was hydrothermally synthesized and characterized by single crystal X-ray diffraction. The three-dimensional framework is built up from La₂O₁₆ dimers connected by carboxylate anions. The polymer exhibits strong photoluminescence at room temperature with the main emission band at 390 nm (λ_ex = 338 nm). Crystal data: triclinic, space group P(−1),a = 6.4486(3),b = 9.4525(5),c = 9.6238(5) ?, α= 88.24(1), β = 74.67(2), γ= 76.76(1)°,V = 550.45(5)     

Designing of Zn (II)-based novel coordination polymer (CP): Synthesis,characterization, and heavy metal removal from water

A new coordination polymer, Zn-(OC-AMAM-CO) CP, has been synthesized from Zn (II) as ionic node and 2,2′-((1,2-phenylenebis [azanediyl])bis (carbonyl))dibenzoic acid, (OC-AMAM-CO), as a new linker, where (OC-AMAM-CO) has been synthesized as an amide product through condensation reaction of phthalic acid and o-phenylenediamine. The amide product (OC-AMAM-CO) and Zn-(OC-AMAM-CO) CP were characterized via FTIR and PXRD analyses, and Zn-(OC-AMAM-CO) CP was further characterized via SEM/EDX and XPS analyses. Moreover, DFT study was performed to shed light on the both structures of (OC-AMAM-CO) and Zn-(OC-AMAM-CO). PXRD analysis revealed the successful syntheses of the new linker (OC-AMAM-CO) and Zn-(OC-AMAM-CO) CP where the new CP is crystalline. DFT study revealed that the 3D topological structure assembled through coordination, π–π stacking, and hydrogen bonding. Zn-(OC-AMAM-CO) CP was applied as an adsorbent for the removal of Cu (II) from water as it has abundant chelating groups that serve as adsorptive coordinating sites. Isotherm study revealed the obedience of Cu (II)/Zn-(OC-AMAM-CO) CP adsorption system to Langmuir modeling with adsorption capacity of about 55 mg/g. A kinetic study showed that the rate of adsorption was a pseudo-first-order type. Further, adsorption process was found to be strongly diffusion dependent.     

A nickel 1-D zigzag chain coordination polymer of 2-pyrazinecarboxylic acid

[Ni(pyza)₂H₂O] _n has been synthesized by hydrothermal reaction of 2-pyrazinecarboxylic acid (Hpyza) and Ni(CH₃COO)₂ ·?4H₂O in the presence of 1,10-phenanthroline and structurally characterized by elemental analysis, IR, UV and single crystal X-ray diffraction. The title complex displays an infinite zigzag chain structure in which each nickel(II) center is coordinated by three nitrogen and three oxygen atoms to generate a NiN₃O₃ octahedral geometry. The existence of hydrogen bond leads to formation of the interpenetrating stacked structure.     

2,2′-氧联二苯甲酸合钡-维配位聚合物的合成与晶体结构

在水热条件下,以2,2′-氧联二苯甲酸( H2odb)和Ba(NO3)2作为原料合成了一维配位聚合物{[Ba(Hodb)2]}n；利用红外光谱、X射线单晶衍射、元素分析等考察了产物的结构和组成,利用热重分析测定了其热稳定性.结果表明,标题化合物属于三斜晶系,P-1空间群,晶胞参数为:a=0.881 9(3) nm,b=...     

A SHG-active manganese coordination polymer with noncentrosymmetric structure based on achiral carboxyphosphinate ligand

The hydrothermal reaction of MnSO₄ with the achiral 2-carboxyethyl(phenyl)phosphinate ligand (H₂L) afforded a 2?D coordination polymer manganese phosphinate, [Mn(HL)₂]_n (1) (H₂L?=?2-carboxyethyl(phenyl) phosphinic acid). It contains two types of dimeric ring motifs, which can generate a layer structure through edge-sharing. The interlayer stacking by C-H…π interactions between the C-H groups of the phenyl rings of HL^- and the phenyl rings of the adjacent layers results in its crystallization in a noncentrosymmetric crystal structure with (4³)₂(4⁶·6⁶·8³) topology. Compound 1 shows a second harmonic generation response that is 0.8 times that of urea. The luminescence spectrum indicates an emission maximum at 457?nm, attributed to an intra-ligand emission state.     

Synthesis,structure, and magnetism of a ytterbium coordination polymer with 5-sulfonyl-1,2,4-benzenetricarboxylate and oxalate

[Yb₂(SBTC)(ox)(H₂O)₅] _n (1) (H₄-SBTC?=?5-sulfonyl-1,2,4-benzenetricarboxylic acid and ox?=?oxalate) has been hydrothermally synthesized by reaction of 5-sulfonyl-1,2,4-benzenetricarboxylic acid with Yb(NO₃)₃?5H₂O. In situ formation of oxalate derived from H₄-SBTC is unprecedented and adds a new oxalate formation reaction to in situ ligand syntheses. Compound 1 features a 2-D bilayered coordination network, which is further extended into a 3-D supramolecular framework through interlayered hydrogen bonds. Magnetic measurements on 1 indicate that there is an antiferromagnetic interaction between Yb(III) ions.     

Synthesis and characterization of some carbazole-based imine polymers

Five imine polymers, all containing 3,6-disubstituted carbazole ring in the main polymer chain, were synthesized by solution polycondensation of 3,6-diformyl (N-hexyl) carbazole with hydrazine, 1,4-diaminobenzene, 4,4′-diaminobiphenyl, 1,5-diaminonaphthalene and 3,6-(N-hexyl) diaminocarbazole. The polymers were analyzed by spectroscopic methods and compared with two imine models.