查询词典 bidentate

In addition, compared with Eu3 (TPP0)2 , Eu3DPEPO has excellent fluorescent properties and a high thermal stability originating from the rigidity influence of DPEPO as bidentate ligand.

与Eu3(TPP0)2进行比较，证明中性双齿DPEPO的刚性结构增强了铕配合物的荧光性能和热稳定性，可满足于印刷包装防伪等的需要。

Metal-Organic coordination polymer is formed by self-assembly through coordination bond between bidentate or multbentate organic ligand and central metal ion.

金属有机配位聚合物是通过含给电子基团的双齿或多齿有机配体和一种或几种中心金属离子通过配位键自组装而形成的。

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 novel supramolecular complex, [Cu2]CH3OHH2O (fum=fumarate dianion, dpphen=4, 7-diphenyl-1, 10-phenanthroline), has been prepared from the reaction of bidentate ligand, fumarate with CuCl2, and were characterized by element analysis, IR, thermal analysis and X-ray diffraction technique.

利用螯合配体4，7-二苯基－1，10-邻菲罗啉与反丁烯二酸钠及铜盐反应合成了一种新型超分子配合物[Cu2]CH3OHH2O（fum=反丁烯二酸根，dpphen=4，7-二苯基－1，10-邻菲罗啉）。通过元素分析、红外光谱、热分析和X射线单晶衍射等技术对其进行了表征。

There are also two types of IPTligands in crystal 2. With two bidentate carboxylates, one acts as bridging ligandconnecting neighboring 〓 tetrahedral core along c axia to form ladderlike long chain.

且间苯二甲酸根配体可以分为两类：第一类配体中每个羧酸根连接四核锌四面体结构中的四条边并沿c轴方向连接邻近的四面体结构单元形成梯形长链。

The results showed that Ni\+\{2+\} bonds with O\+\{2-\} of the SiO\-2 support in bidentate fashion and is terminated with the two methoxyl groups.

结果表明，负载型单核金属甲氧基配合物 Ni(OCH3) 2 / Si O2 中，Ni2 +与载体 Si O2 表面的 O2 -以双齿形式配位；在催化剂表面存在 CO2 的桥式吸附态和甲氧碳酸酯基物种两种吸附态，CH3OH则只有一种分子吸附态。

E., monodentate,bidentate and complicated multidentate chain-structured or web-structured CIPs.

利用曲线拟合技术对其光谱的ν1-SO峰进行分峰，获得了不同湿度下ZnSO4微液滴中各组分的量化信息：高湿度时，液滴中主要包含自由的水合SO；随着湿度降低，自由SO逐渐向单齿、双齿接触离子对转化，并在湿度为66%和34%时分别达到其最大值；继续降低湿度，复杂的链状或网状接触离子对逐渐成为液滴中的主要成分。

Moreover, the relative percentage of each type of oxane bonds in the sample of APS-modified LDHs can be determined from their relative peak intensities; these results are summarized in Table 2.The oxane bonds attached on surface of AL-M can be mainly attributed to bidentate (T2)and tridentate(T3)types.

此外，相对比例的每种类型的oxane债券样品中黄芪多糖改性水滑石可确定其相对峰强度；这些结果的摘要列于表2 oxane债券所附表面的Al - M可以是主要原因以双齿和三齿（的T3 ）类型。

Discussing the mechanisms of the pinacol coupling reactions catalyzed by bidentate and tetradentate chiral ligands.

四、分别对二齿手性配体和四齿手性配体催化Pinacol偶联反应机理进行了探讨。

Prescription: 60g of the root of remembranous milk vetch, conceive 20g of the root of bidentate achyranthes, steatitic 30g , e art 10g, of amber 3gtake medicine with water.

处方：黄芪60g，怀牛膝20g，滑石30g，莪术10g，琥珀3g。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。