Synthesis, Structure Characterization, and Cu^2＋ Recognition of 3-{ [3- （Phenylsulfonamido） benzoyl ] methylidene } -3,4- dihydroquinoxaline-2 （1H） -one

IntroductionSubstituted diketo acid derivatives possess a varie-ty of biological properties, such as analgesic[1—3], anti-bacterial[4]as well as anti-inflammatory[3]. Very re-cently, the results of random screening of millions ofcompounds have shown that…     

Synthesis and Crystal Structure of cis-Bis(3-hydroxy2-ethyl-4-pyranonato)dioxomolybdenum(Ⅵ)

1 INTRODUCTION 3-Hydroxy-2-methyl-4-pyranone (maltol) and 3-hydroxy-2-ethyl-4-pyranone (ethylmaltol) are nontoxic compounds that have been applied to bio- inorganic chemistry over several decades[1, 2]. Their iron(III) complexes are relevant to the control of iron levels in the human body. Such complexes have been assessed for the amelioration of anaemia[3] and their respective ligands have been tested for the removal of excess burdens of iron in diseases such as siderosis, haemochroma…     

侧链对聚对苯撑乙炔溶解性和光谱性能的影响

利用钯催化反应合成了一类侧链含不同烷氧取代基(甲氧基，辛烷氧基，十二烷氧基)的聚时苯撑乙炔，讨论了侧链烷氧取代基对聚对苯撑乙炔的分子量和溶解性的影响，比较了聚合物的紫外吸收光谱和荧光光谱特征。     

The Synthesis of Bis（carboxyalkylmethyl） Diselenides by Selenium Transfer Reaction of Aryl Selenoamides

Aryl selenoamides react smoothly with a-haloacetic acid in various alcohol to givecorresponding bis(carboxyalkylmethyl) diselenides in good yields.     

Construction and Analysis of N-phosphoryl Peptide Libraries

N-Phosphoryl peptide libraries were constructed by transformation from homo-oligopeptide libraries, which was synthesized by self-assembly of amino acids with the assistance of phosphorus oxychloride. Electrospray ionization mass spectrometry (ESI-MS) was used to monitor the reaction.     

在酸性条件下合成氧化亚铜纳米立方体(英)

在微酸性(pH：4～6)的水热体系中130 ℃反应18 h合成了氧化亚铜纳米粒子，粒径约为100 nm，呈立方体外形。乙二胺和十六烷基胺在反应体系中充当缓冲试剂，调节反应液的pH值并控制体系中游离Cu²⁺的浓度，使得Cu²⁺不会被迅速还原成单质铜。所合成的纳米立方体的能带宽度约为2.51 eV，比氧化亚铜体材料和氧化亚铜纳米线蓝移了0.51 eV和0.17 eV，它有利于把太阳光谱中能量高的可见光转化成其他形式的能量。     

酰胺型手性固定相直接拆分克仑特罗对映体

 将酰胺型手性固定相用于正相高效液相直接拆分 β2 受体兴奋剂克仑特罗。讨论了三元流动相中正己烷、1,2 二氯乙烷和甲醇含量的变化以及柱温和流速对分离的影响 ;优化了实验条件 :流动相为V(正己烷 )∶V(二氯乙烷 )∶V(甲醇 ) =5 4∶38∶8,柱温为 17℃ ,流速为 1 0mL/min ;并对拆分的机理加以探讨。方法简单、快速。     

某些新型冠醚-卟啉化合物的合成

本文以内消旋不对称单羟基-卟啉化合物1a～d合成了七种新型的冠醚-卟啉化合物3a～g和它们的中间体2a～g.这些化合物中的某些金属络合物对链烯的环氧化作用起催化作用, 它们的结构经元素分析,IR, UV和^1H NMR波谱证实.     

四氮大环-金属配合物与DNA作用的电化学及谱学研究

Mononuclear copper（Ⅱ）, nickel（Ⅱ） and cobalt（Ⅲ） tetracoordinate macrocyclic complexes were synthesized and spectroscopically characterized. The crystal structure of the three compounds were determined by X-ray crystallography. The electrochemical experimental results indicate that the three complexes could interact with DNA mainly by electrostatic interaction. The interaction of tetracoordinate macrocyclic cobalt（Ⅲ） complex with DNA was studied by cyclic voltammetry and UV-vis spectroscopy. The experimental results reveal that tetracoordinate macrocyc- lic cobalt（Ⅲ） complex could interact with DNA by electrostatic interaction to form a 1 ： 1 DNA association complex with a binding constant of 7.50 ×10^3 L·mol^-1.     

草酰胺桥联大环二羰四胺铜(Ⅱ)-钴(Ⅱ)异双核配合物的合成、结构、表征和电化学性质

合成了一种具有草酰胺桥联大环二羰四胺结构的 Cu( ) -Co( )异双核配合物 ,用红外光谱、电子光谱、摩尔电导、热重分析、室温磁矩、循环伏安等对其进行了表征 .初步推定 Cu( ) -Co( )异双核配合物具有草酰胺桥联大环二羰四胺结构 .室温磁矩测定表明 ,通过草酰胺桥联配体金属离子间有一定的反铁磁性自旋偶合作用 .循环伏安法测定了配合物的半波电位 ,实验表明 ,此类配合物能够稳定高价态 Cu( ) ,外延桥基配位对大环内腔 Cu( )离子的氧化还原过程无影响 .单核配合物 X射线晶体衍射研究表明 ,其为单斜晶系 ,空间群 P2 1 /c,a=0 .73 861 (1 5 ) nm,b=2 .1 2 1 1 (4 ) nm,c=0 .95 2 5 0 (1 9) nm,β=94.70 (3 )°,R1 =0 .0 5 1 3 ,w R2 =0 .1 1 77,Z=4.Cu( )处于大环四胺平面正方中心上方 0 .0 3 nm,并具有外延草酰胺桥