微波辐射固相法合成缩二脲铜配合物

The copper(Ⅱ) complexes of biuret have been synthesized by solid phase reaction with microwave irradiation. The compositions and structures of the complexes are characterized by elemental analysis, molar conductance, in-frared spectra, electronic spectra, magnetic susceptibility, thermogravimetric and differential thermal analysis, X-ray powder diffraction. The two complexes have the compositions of [Cu(bi)₂]Cl₂(A) and [Cu(bi)₂](NO₃)₂(B)(bi=NH₂CONHCONH₂) and the molecular formulae of CuC₄H₁₀O₄N₆Cl₂ and CuC₄H₁₀O₁₀N₈, respectively. The molar conductance data show that the complexes are 1∶2 electrolyte. Infrared spectra of the complexes show oxygen atoms have been coordinated with divalent copper ion. The thermal decomposition processes of the complexes show that the final residues are all cupper oxide. The results of indexes to the X-ray powder diffraction data indicate that the crystal structure of the complexes belong to monoclinic system, the lattice parameters are: a=0.6976nm,b=1.1546 nm,c=2.1689nm,β=96.80°,V=1.7346nm³ for A; and a=0.7096nm,b=1.1359 nm,c=2.1002 nm,β=97.05°,V=1.6800nm³ for B, respectively.     

新型冠醚桥联手性双核Salen配合物的合成及谱学性质

Five novel chiral dinuclear Salen complexes M₂L (M = Fe³⁺Cl^-, Mn³⁺Cl^-, Co²⁺, Ni²⁺, Cu²⁺) and Ba²⁺-crown ether complex H₄BaL(ClO₄)₂ were synthesized. The complexes were synthesized by reaction between ligand 3(H₄L) and corresponding metal salts (FeCl₃, Mn(OAc)₂·4H₂O, Co(OAc)₂·4H₂O, Ni(OAc)₂·4H₂O, Cu(OAc)₂·H₂O, Ba(ClO₄)₂·2H₂O). The chiral two discrete Salen ligand 3 was condensed from 3,3′-[Oxybis(2,l-ethanediyloxy)]bis(2-hydroxybenzaldehyde) and (R,R)-1,2-diamino-cyclohexane. The structure of complexes is two discrete Salen unit bridged with crown ether from two sides. We found that ligand 3 had three complex cites. The two N₂O₂ cavities can found complexes with d-metals (compound 4), while the O₁₀ cavity can found complex with alkali metals and alkaline-earth metals (compound 5). The compounds were characterized by elemental analyses, ¹H NMR, Mass-spectra, FT-IR, UV-Vis and CD spectra. The FT-IR, UV-Vis and CD spectra property of complexes were minutely analyzed.     

共价键连卟啉-富勒烯化合物的合成与表征

The covalently linked porphyrin-fullerene dyads were synthesized. The ligand 5-[4′-(4″-Phenoxybutoxy)phenyl]-N-(2-methyl)fulleropyrrolidine-10,15,20-tri-(p-methoxyphenyl)porphyrin (H₂P-C₆₀) was synthesized by 1,3 dipolar cycloaddition reaction with C₆₀, sarcosine and H₂P-CHO. The zinc porphyrin-fullerene was prepared by metalation of H₂P-C₆₀ and zinc acetate. The compounds were characterized by meams of IR, UV-Vis, ESI-MS, elemental analysis, and ¹H NMR.     

以氯醌酸二价阴离子为桥联配体的Fe(Ⅲ)-Fe(Ⅲ)和Mn(Ⅱ)-Mn(Ⅱ)双核配合物的合成与磁性

Two new binuclear Fe(Ⅲ)-Fe(Ⅲ) and Mn(Ⅱ)-Mn(Ⅱ) complexes containing the dianions of chloranilic acids (CA) which act as bridging ligand in the complexes, have been synthesized namely [Fe₂(phen)₄(u-CA)](ClO₄)₄·2H₂O and [Mn₂(phen)₄(u-CA)](ClO₄)₂·3H₂O (phen = O-phenanthroline; CA = dianions of chloranilic acids). They have been characterized by elemental analyses, IR, electronic spectra, susceptibility and variable-temperature magnetic susceptibility. The results indicate that there is a antiferromagnetic interaction between metal ions in the complexes at low temperature. The observed data were well fitted to those from a Heisenberg model. The obtained parameters: J= -2.02cm^-1, g = 2.25 for Fe(Ⅲ)-Fe(Ⅲ) complex; J=-5.45cm^-1, g = 2.01 for Mn(Ⅱ)-Mn(Ⅱ) complex.     

Syntheses, spectra and crystal structures of a series of Mo/S(O) complexes containing oxalate ligand

Two Mo/S complexes: K₆[Mo₂O₂S₂(C₂O₄)₂-(ClPO₃)₂]·H₂O (1) and K₆[Mo₂O₃S(C₂O₄)₂(ClPO₃)₂]·3H₂O (2) containing oxalate ligand were prepared by the reaction of (NH₄)₂MoS₄ and potassium oxalate by adding a small amount of H₃PO₄ to adjust the value of pH in the system of methanol and water under an atmosphere of pure nitrogen at ambient temperature and characterized by means of elemental analysis, IR, and UV-Vis. Results of the analysis reveal that crystals of the complex 1 are orthorhombic, space group Pbcn, a = 4.6370(2) nm, b = 0.7549(2) nm, c = 1.3888(4) nm, V = 4.861(2) nm³, Z = 8, M = 945.49, Dc = 2.58 g/cm³, μ = 2.625 cm⁻¹, R = 0.063, and wR = 0.075. In addition, their spectral properties were also discussed. Translated from Chem. Res. Appl., 2006, 18(4) (in Chinese)     

CrOx/ SBA-15介孔催化剂上丙烷在二氧化碳气氛中脱氢反应的研究

The structure and catalytic properties based on Chromium Oxide supported on mesoporous SBA-15 for oxidative dehydrogenation of propane by CO₂ have been studied by using X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS), electron spin resonance (ESR), X-ray photoelectron spectroscopy (XPS) and propane pulsing experiments in the absence of gas-phase O₂. It has been shown that propane conversion and propene yield increase with Cr loadings. The propane conversion and propene yield on CrO_x(Cr: 10wt%)/SBA-15 catalyst for oxidative dehydrogenation of propane by CO₂ at 550 ℃ reach 24.8% and 21.8%, respectively .The results of ESR, UV-Vis DRS and propane pulsing experiments indicate that Cr^Ⅲ in the CrO_x/ SBA-15 catalyst is the main active species in oxidative dehydrogenation of propane by CO₂ and Cr^Ⅵ, Cr^Ⅴ is inactive in dehydrogenation.     

纳米Mn-Zn铁氧体的制备和研究

Nanosize manganese zinc ferrites were fabricated by hydrothermal precipitation route using Fe₂(SO₄)₃, ZnSO₄·7H₂O, MnSO₄·H₂O as material, then some calcinated at 500 ℃ and studied by XRD, TEM, IR and VSM. The results showed that the products were spinel crystal structure and uniformly sized nanoparticles (15～25 nm) with little aggregation. The analysis of IR showed that the superficial water can be eliminated, but that was embedded in crystal lattice can not be removed by calcinating. The effect Zn content x on the lattice (a) of nanosize Mn_1-xZn_xFe₂O₄ was also discussed. The lattice of nanosize Mn_1-xZn_xFe₂O₄ decreases with x increasing; and its value deviated the standard lattice (a₀) of normal size manganese zinc ferrites. A lot of water was absorbed during the hydrothermal process owing to the large surface of nanosize particles. The change of magnetic properties of Mn_xZn_1-xFe₂O₄ with x increasing was studied: nanosize Mn_xZn_1-xFe₂O₄ particles synthesized by us exhibited peculiar magnetic properties curve with Zn content (x) increasing, Superparamagnetic behaviors of the synthesized ZnFe₂O₄ samples were confirmed by magnetic characterization, which can be explained by the difference between the distribution of the metal ions (Mn²⁺, Zn²⁺ and Fe³⁺) among the tetrahedral (A) and the octahedral (B) sites of nanosize ferrite and that of bulk ferrite.     

三元混合配合物Cu(C10H8N2O3)·(C5H5N)·(H2O)的合成和晶体结构

The novel copper(Ⅱ) complex with 2-oxo-propionic acid benzoyl hydrazone and pyridine ligands, Cu(C₁₀H₈N₂O₃)·(C₅H₅N)·(H₂O) (C₁₀H₈N₂O₃^2- is the dinegative ion of 2-oxo-propionicacid benzoyl hydrazone), has been synthesized and characterized by elemental analysis and IR. The crystal structure of the title complex was determined by single crystal X-ray diffraction technique. Complex crystallized in the triclinic space group P1 with a = 0.729 08(10) nm, b= 1.020 01(14) nm, c= 1.126 28(15) nm, α = 71.644(2) °, β = 80.437(2) °, γ = 89.160(2)°, V= 0.78328(18) nm³, Z= 2, D_c= 1.547 Mg·m^-3, μ(MoKα) = 1.417 mm^-1, F(000) = 374. The final R₁ = 0.030 6, wR₂= 0.084 2 for 2 992 observed reflections [I≥2σ(I)] out of 3357 unique reflections. In this complex, copper(Ⅱ) ion is square-pyramidally coordinated by two oxygen atoms and one nitrogen atom of tridentate C₁₀H₈N₂O₃^2- ligand, one nitrogen atom of the pyridine ligand, and one oxygen atom of water molecule with the oxygen atom of water molecule locating at the apical position. The analysis of the crystal structure indicates that the complex has a one-dimensional chain structure, which is formed by intermolecular hydrogen bonds. CCDC: 222656.     

二硫代草酸根桥联的双核镍(Ⅱ)配合物研究

Three binuclear Nickel(Ⅱ) complexes were synthesized, bridged with dithiooxalate, Ni₂(Bpy)₃(Dto)₂(H₂O)₃(1), Ni₂(Phen)₃(Dto)₂(H₂O)₃(2) and Ni₂(Me₂Bpy)₃(Dto)₂(H₂O)₂ (3) (Bpy=2,2′-Bipyridine, Phen=1,10-phenanthroline, Me₂Bpy=4,4′-dimethyl-2,2′-bipyridine, Dto^2-=Dithiooxalate), and characterized by elemental analyses, IR, UV-Visible spectra, conductance. The variable temperature magnetic susceptibilities for the complexes were measured in the range of temperature between 1.5 K and 298 K. Experimental data of magnetic susceptibility were successfully fit to theoretical value based on the spin Hamiltonian operator：(?), S₁=S₂=1, giving the magnetic exchange parameters of 2J=-52.8 cm^-1. This result indicates the presence of a strong antiferromagnetic spin exchange interaction between the Ni(Ⅱ) ions. The magnetic exchange parameters of the binuclear Nickel(Ⅱ) complexes bridged with dithiooxalate is larger than that of the binuclear Nickel(Ⅱ) complexes bridged with oxalate. Dithiooxalate is more effective to transfer antiferromagnetic spin exchange interaction between the Ni(Ⅱ) ions than oxalate.     

苯甲醛缩三乙烯四胺Schiff碱Co(Ⅱ)配合物固相合成及氧合性能研究

Three new cobalt complexes were synthesized by solid-state reaction at room temperature. It was found that one mole of complex reacted with two moles of oxygen at room temperature. And the oxygenated complexes [Co·(L₁)₂·2O₂](NO₃)₂·2H₂O (L₁=N,N′-bis(4-hydroxyl-3-methoxy-benzyl)-triethylenetetramine), [Co·(L₂)₂·2O₂](NO₃)₂ ·2H₂O (L₂=N,N′-bis(4-hydroxyl-benzyl)-triethylenetetramine) and [Co·L₃·2O₂](NO₃)₂·2H₂O (L₃=N,N′-bis(2-hydroxyl-benzyl)-triethylenetetramine) were obtained and characterized by elemental analysis, IR spectra, ¹H NMR, TG/DTA, UV-Vis and molar conductance. The coordinated oxygen contents in the oxygenated complex were also determined by weight method. It was found that one O₂ molecule coordinated to the Co ion and formed superoxo type oxygenated complex.     

乙酰丙酮-5,10,15,20-四-取代苯基卟啉钇的制备和表征

有机溶性乙酰丙酮-四-苯基卟啉希土配合物已有报告,但苯基上取代的钇的配合物的衍生物至今没见报道。本文首次制得乙酰丙酮-5,10,15,20-四邻氯苯基卟啉钇Y(o-Cl)Tppacac(H_2Tpp:四苯基卟啉:Hacac:乙酰丙酮;R_1:Cl,R_2=R_3:H),四间氯苯基卟啉钇Y(m-Cl)Tppacac(R_2:Cl,R_1=R_3:H),四对氯苯基卟啉钇Y(p-Cl)Tppacac(R_3:Cl,R_1=R_2:H),四邻甲氧基苯基卟啉钇Y(o-CH_3O)Tppacac(R_1:CH_3O,R_2=R_3:H)和四对甲氧苯基卟啉钇Y(p-CH_3O)Tppacac(R_3:CH_3O,R_1=R_2:H),并用元素分析、红外光谱、紫外光谱和热分析进行了表征。     

Meso位直结型稳定双卟啉的合成及性质

利用氧化法成功地合成了同核meso位直结型稳定卟啉二聚体锌络合物,收率接近理论值;无论是碱式还是金属络合物都显示出卟啉环间成平面正交的电子吸收光谱;在循环伏安图谱中都显示出卟啉环间再氧化还原过程中较强烈的库仑作用;每个卟啉环的一电子氧化或还原均为可逆过程。     

5-(4-丙氨酸丁氧苯基)-10,15,20-三苯基卟啉及其配合物的合成和性质

本文首次合成了一种新型的单取代的丙氨酸四苯基卟啉，５－（４－丙氨酸丁氧苯基）－１０，１５，２０－三苯基卟啉（Ｈ２Ｌ），及其Ｃｏ（Ⅱ）、Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）配合物（ＣｏＬ、ＣｕＬ、ＺｎＬ），用元素分析、电子光谱、红外光谱、荧光光谱和激光拉曼光谱进行表征。研究了ＭＬ存在下，用氧气氧化芳醛的过程，测定了反应体系的吸氧动力学曲线，研究了氧化过程金属卟啉可见光谱变化以及底物和金属卟啉浓度对反应的影响。结果表明，ＣｏＬ能加速芳醛氧化反应，最大吸氧速率随ＣｏＬ浓度的增加而增大，但反应诱导期随ＣｏＬ浓度增大而延长。     

乙酰丙酮-5,10,15,20-四-取代苯基卟啉钇的制备和表征

The coordination compounds of acctylacetonate-5,10,15,20-tctrasubstituted phcnyl-porphyrin with Yttrium, Y(o-Cl)Tppacac, Y(m- Cl)Tppacac, Y(p-Cl)Tppacac, Y(o-CH₃O) Tppacac, and Y(p-CH₃O)Tppacac (H₂Tpp: tetraphcnylporphyrin, Hacac: acetylacctonc), were prepared and characterised on the basis of elemental analysis, infrared spectra, UV-visiblc spectra and thermal analysis.     

两亲性卟啉的合成及其L—B膜

早期L-B膜的研制主要着眼于长碳链脂肪酸及其衍生物。近来,由于对膜性能的特殊要求,人们把注意力转向丁二炔、酞菁和卟啉衍生物。本文用四一(N,N-二甲基氨基苯基)卟啉(TDMAPP)与溴代十六烷反应得到两亲性的含有4个长碳链的澳化四-(4-     

卟啉铁与抗坏血酸均相电子转移反应的动力学和机理

采用电子吸收光谱和光谱－电化学方法研究了中位－四（邻硝基苯基）四苯并卟啉的Fe(Ⅲ）配合物与抗坏血酸在DMF溶液中的均相电子转移反应的动力学和机理。结果表明此电子转移反应来源于抗坏血酸与铁卟啉中心铁离子的轴向配位作用,并将一个电子转移至铁离子。反应速度对铁卟啉和抗坏血酸均为一级,并与抗坏血酸的离解有关。     

停流分光光度法研究铁卟啉与肼反应动力学

用停流分光光度法研究了氯代四苯基卟啉铁 ( ) [Fe T(p- X) PPCl,X=H,CH3 ]与肼在二氯甲烷溶液中的反应动力学 ,求得了不同温度下反应的速率常数及活化参数 ,初步探讨了反应机理。     

meso—四（4—磺基苯基）卟啉（TPPS）及其锌配合物（ZnTPPS）的伏安法研究

本文用直流极谱法,循环伏安法研究了TPPS及其锌配合物ZnTPPS的极谱还原性质。实验表明TPPS的第一步电极反应为可逆的两电子还原过程,有两个H~ 参与反应。ZnTPPS第一步还原为不可逆电极过程,有一个H~ 参与。循环伏安图表明ZnTPPS还原时或还原后有Zn(Ⅱ)的还原,可能是ZnTPPS的离解所致。TPPS和ZnTPPS在汞电极有相近的强吸附作用。测算了吸附等温式,饱和吸附量,吸附分子的面积,吸附系数和吸附自由能等参数。     

5-(4-丙氨酸丁氧苯基)-10,15,20-三苯基卟啉及其配合物的合成和性质

本文首次合成了一种 新型的单取代的丙氨酸四苯基卟啉，５－（４－丙氨酸丁氧苯基）－１０，１５，２０－三苯基卟啉（Ｈ２Ｌ），及其Ｃｏ（ｄ２）、Ｃｕ（Ⅱ）、Ｚｎ（Ⅱ）配合物用元素分析，电子光谱，红外光谱，荧光光谱和激光拉曼光谱进行表征。