吡啶

A water-soluble porphyrin dimer containing eight positive charges, bridged by 4,4 -dicar- boxy-2,2 -bipyridyl, has been synthesized.

以4，4'-二羧酸-2，2'-联吡啶为桥联试剂，合成了一种含8个阳离子的水溶性桥联双卟啉。

In the fifth chapter, six compounds formed between nitrogen-containing ligands such as 2, 2'-bipyridyl, isonicotinamide and 1, 4, 8, 11-tetraazacyclotetradecane and the solution cadmium sulfonates such as 1, 5-naphthalenedisulfonate, 2, 6-naphthalenedisulfonate, 4, 4'-bipenyldisulfonate and 4, 4'-penyletherdisulfonate have been synthesized and structurally characterized. Besides, another compound has been synthesized with cadmium carbonate reacting with 1, 5-naphthalenedisulfonate acid.

第五章以2，2'-联吡啶、异烟酰胺和1，4，8，11-四氮杂环十四癸烷与含有Cd〓和1，5-萘二磺酸根离子、2，6-萘二磺酸根离子、4，4'-联苯二磺酸根离子和4，4'-苯醚二磺酸根离子的水溶液反应，合成了六个化合物，另外以1，5-萘二磺酸与碳酸镉反应合成出一个化合物。

Through comparison from six aspects,We Conclued that useing 2,2－Bipyridyl to determine the content of iron in liquor,can save time and reagents,reduce error,improve stability of liquor than useing 1,10－phenanthroline.

摘 要：通过从6个方面进行比较，得出用2，2－联吡啶法检测白酒中铁含量比1，10－菲口罗啉法节约时间及试剂，减少误差，稳定性提高。关键词：白酒；含铁量；检测；误差；稳定性

The substituted group on the bipyridyl ligand in complex 2 could lose C2H4 neutral molecule under a higher CID fragmentation (such as CID 110 V), and its single charge ion is more stable than its double charge ion.

而络合物2在较高的CID电压下(1l0V)会发生联吡啶环上取代基的中性C2H4小分子丢失，其单电荷离子比二价电荷离子稳定。

A two-fold penetration coordination polymer n (1)(bpy=4,4'-bipyridyl) has been synthesized through hydrothermal reaction and structurally characterized by single crystal X-ray diffraction method.

利用水热反应，合成了一个具有二重穿插结构的一价铜配位聚合物n(1)(bpy=4，4'-联吡啶)，并利用元素分析，X射线单晶衍射，红外光谱以及热重分析等手段对标题化合物进行了表征。

A2D iim ine nickel, palladium complexes and pyridine bisimine iron, cobalt complexes are discovered in recent years to be new generation late transition metal catalysts for olefin homogeneous poly merization and oligomerization.

A2二亚胺镍、钯络合物和吡啶二亚胺铁、钴络合物是近几年来发现的新一代烯烃均相聚合后过渡金属催化剂。

Major product lines include various kinds of boronic acids, pyridines, indoles, imidazoles, as well as many other fine chemicals.

公司主要产品包括各种硼酸，吡啶，吲哚，咪唑，和其它精细化工产品和有机化合物。

The center can finish various kinds of reactions, such as reactions in low temperature（-80℃）and high temperature（300℃）, hydrogenation reactions and so on. Especially in synthesizing primidine, pyridine, thiophene, quinoline and boronic acid, Yield lies at the leading level in China.

研发中心可以按客户需求完成各种低温（-80℃）、高温（300℃）、高压氢化等反应，尤其在嘧啶、吡啶、喹啉、噻吩及有机硼酸类化合物的合成方面，博鸿在国内同行业中处于领先水平。

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究，采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓，以光催化降解溴代甲烷为模型反应，系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响，结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段，深入地讨论了超强酸化对TiO〓的改性机理，阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

A dual-wavelength resonance light scattering ratiometric method based on the interaction between bromothymol blue and cetylpyridinium bromide was developed for the determination of CPB.

应用双波长共振光散射比率法研究了溴百里酚蓝与阳离子表面活性剂溴化十六烷基吡啶的相互作用。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了