两个双核Cu(Ⅰ)-4，4′-联吡啶配合物的合成、结构和光谱分析

采用乙醚蒸汽扩散法,由四氟合硼酸四乙腈合铜(Ⅰ)、4,4′-联吡啶、二(2-二苯基膦基)苯基醚或者三苯基膦的反应后的二氯甲烷和乙腈混合溶液中,晶化出[Cu₂(4,4′-bipy)(POP)₂(CH₃CN)₂(C₂H₅O)₂](BF₄)₂ (1)和[Cu₂(4,4′-bipy)(PPh₃)₄(CH₃CN)₂](BF₄)₂ (2)两种配合物。对它们进行了元素分析和X射线衍射单晶结构表征,同时测定了UV-Vis光谱及相应的激发态寿命。配合物1和2展示了较好的光物理特性,在275 nm紫外光的激发下,固体粉末样品的最大发射峰位分别位于527和483 nm,这归因于金属干扰的配体内部跃迁。     

一维链状铁(Ⅱ)配位聚合物的合成与晶体结构

A coordination polymer, namely [Fe(DPPZ)(dipic)]_n (1) (DPPZ=dipyrido[3,2-a∶2′,3′-c]phenazine and H₂dipic=pyridine-2,6-dicarboxylic acid), has been obtained by using hydrothermal synthesis method. The crystal structure was determined by X-ray single crystal structure analysis with the following data: Monoclinic, P2₁/c, a=0.794 95(16) nm, b=3.601 1(7) nm, c=0.734 32(15) nm, β=106.07(3)°, V=2.020 0(7) nm³, Z=4, M_r=503.25, D_c=1.655 g·cm^-3, F(000)=1 024, μ(Mo Kα)=0.795 mm^-1, R=0.038 5 and wR=0.081 0. Complex 1 has octahedral coordination geometry and forms 1D zigzag coordination chains that organize into an unusual 3D supramolecular motif through noncovalent bonds, such as π-π stacking interactions and C-H…O hydrogen bonds. The result of TG analysis indicates that the title complex is stable till 290 ℃. CCDC: 716602.     

簿层树脂相吸光光度法测定痕量钴的研究

提出了用薄层树脂相通过光度法测定痕量钴的新方法。本法具有灵敏度高，选择性好，快速等特点。钴离子（Ⅱ）与４－（５－氯－二吡啶）偶氮］－１，３－二氨基苯（简称５－Ｃｌ－ＰＡＤＡＢ）生成有色稳定配合物，将其富集在Ｈ＋型（７３２~＃）。阳离子交换树脂上，制作成薄层直接测定，λ_（ｍａｘ）＝５７１ｎｍ。本法既克服了需特制１ｍｍ比色皿的困难，又提高了测定精密度，使推广树脂相光度法成为可能。用本法实测了天然水中痕量钴，检测限２．８μｇ·Ｌ~（－１），回收率≥９８％。     

汽车尾气净化器用活性氧化铝的研制

应用一种新的氧化铝制备方法-水合含碳氧化铝热解法, 通过引入模板导向剂和热稳定助剂, 制得了Al2O3纯度≥99.9%, 一次晶粒0.1 μm, 平均粒径0.2～3 μm, BET比表面积148.4 m2*g-1(900 ℃, 1 h焙烧)的活性氧化铝. 该方法所得产品性能稳定, 孔容大, 孔径分布合理, 纯度高. 样品经用户小批量试用认定 其新鲜态、老化后的比表面积和小杂质含量(P, S, Cl, Pb)指标均优于国内同类产品, Al2O3涂层粘结强度、涂层负载量等性能达到国际先进水平.     

Hydrothermal Synthesis, Crystal Structure and Photoluminescent Property of a New Isophthalate- bridged Zinc(II) Polymer with One-dimensional Chain Structure: [Zn(ipt)(im)_2]_(2n)·3nH_2O (ipt = Isophthalate, im = Imidazole)

1 INTRODUCTION The design and synthesis of metal-organic frame- work structure have been studied widely during the past decade not only because of their intriguing architectures but also their unexpected properties for potential practical applications in a wide number of fields, such as asymmetric catalysis, magnetism, pho- toluminescence and so on[1～3]. These novel struc- tures can be rapidly and efficiently synthesized from simple subunits, where the metal ions, bi- or multi- dentate o…     

Hydrothermal Synthesis and Crystal Structure of a New Zero-dimensional Complex: [Zn(H_2BPTC)(phen)_2]_n·3nH_2O

A new metal-organic coordination complex [Zn(H2BPTC)(phen)2]n·3nH2O (BPTC = 3,3′,4,4′-benzophenone tetracarboxylate, phen = 1,10-phenanthroline) 1 has been obtained from hydrothermal reaction and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. In compound 1, the zinc cation is hexa-coordinated with two carboxylate oxygen atoms from one H2BPTC ligand and four nitrogen atoms from two different phen ligands, showing a slightly distorted octahedral geometry. Crystal data: C41H30N4O12Zn, Mr = 836.06, monoclinic, P21/c, a = 14.2714(9), b = 16.9386(10), c = 15.0151(9) , β = 101.3420(10)o, V = 3558.8(4) 3, Dc = 1.560 g/cm3, μ(MoKα) = 0.766 mm-1, F(000) = 1720, Z = 4, R = 0.0439 and wR = 0.1157 for 4123 observed reflections with I > 2σ(I).     

镍、钴超分子配合物的合成、晶体结构及理论计算

通过水热法合成了2个新的金属-有机超分子配合物[Ni(eoba)(phen)(H₂O)₂]·0.58H₂O(1)和[Co(eoba)(phen)]2·H₂O(2)(H₂boba=4,4''-(乙烷-1,2-二氧基)-二苯甲酸,phen=菲咯啉),并对其进行了元素分析、红外光谱、热重和X射线单晶衍射测定。配合物1和2是同构的,每个配合物都是六配位的,菲咯啉分子上的2个氮原子、4,4''-(乙烷-1,2-二氧基)-二苯甲酸配体上的2个氧原子和2个配位水分子与金属配位。此外,还用高斯09程序PBE0/LANL2DZ方法对配合物1进行了自然键轨道(NBO)分析,计算结果表明配位原子与Ni原子之间存在着共价作用。     

A low-noise,high-SNR balanced homodyne detector for the bright squeezed state measurement in 1–100 kHz range

We report a low-noise, high-signal-to-noise-ratio(SNR) balanced homodyne detector based on the standard transimpedance amplifier circuit and the inductance and capacitance combination for the measurement of the bright squeezed state in the range from 1 kHz to 100 kHz. A capacitance is mounted at the input end of the AC branch to prevent the DC photocurrent from entering the AC branch and avoid AC branch saturation. By adding a switch at the DC branch,the DC branch can be flexibly turned on and off on different occasions. When the switch is on, the DC output provides a monitor signal for laser beam alignment. When the switch is off, the electronic noise of the AC branch is greatly reduced at audio-frequency band due to immunity to the impedance of the DC branch, hence the SNR of the AC branch is significantly improved. As a result, the electronic noise of the AC branch is close to -125 dBm, and the maximum SNR of the AC branch is 48 dB with the incident power of 8 mW in the range from 1 kHz to 100 kHz. The developed photodetector paves a path for measuring the bright squeezed state at audio-frequency band.     

Synthesis,Crystal Structure and Fluorescent Properties of Silver and Cadmium Complexes

Two new complexes [Ag(bix)]n·n NAA·n H_2O(1) and [Cd(NAA)(phen)_2(H_2O)]2· 2CH_3COO-·H_2O(2)(bix = 1,4-bis(imidazol-1-ylmethyl)benzene,HNAA = α-naphthylacetic acid,phen = 1,10-phenanthroline) have been successfully synthesized under hydrothermal conditions.Their structures have been determined by elemental analyses,IR spectroscopy,TG and single-crystal X-ray diffraction analysis.The intermolecular hydrogen bonding or π-π stacking interactions extend the complexes into a 3D supramolecular structure.Moreover,the luminescent properties of complex 2 have been investigated in the solid state.     

Hydrothermal Synthesis and Crystal Structure of a Cadmium（Ⅱ） Polymer with a Two-dimensional Network Structure： [ Cd（pzdc）（2,2＇-bipy） ]n·nH2O

A metal-organic coordination compound formulated as [Cd（pzdc）（2,2＇-bipy）]n·nH2O 1 （Hzpzdc = pyrazine-2,3-dicarboxylic acid, 2,2＇-bipy = 2,2＇-bipyridine） has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, TG fluorescence spectrum and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group P2 1/c with a = 10.8081（13）, b = 14.4328（17）, c = 10.2530（12） A, β = 98.504（2）°, V= 1581.8（3） ]A3, C16H14CdN4O5, Mr= 454.71, Dc = 1.909 g/cm^3, μ（MoKa） = 1.420 mm^-1, F（000） = 904, Z = 4, the final R = 0.0230 and wR = 0.0554 for 2901 observed reflections （I 〉 2σ（I））. It exhibits an interesting two-dimensional network structure and shows yellow photoluminescent property at room temperature.