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碱土金属配合物
相关语句
  alkaline earth compounds
     The stability sequence of alkaline earth compounds is Ba>Sr>Mg>Ca.
     碱土金属配合物的稳定性顺序为Ba>Sr>Mg>Ca.
短句来源
  “碱土金属配合物”译为未确定词的双语例句
     The Crystal Structures and Thermal Stability of the Complexes of 2 - Oxo - propionic acid (4 - pyridinecarbonyl) hydrazone with Alkaline Earth Metals
     2-羰基丙酸(4-吡啶甲酰基)腙与碱土金属配合物的晶体结构及热稳定性
短句来源
     Ⅰ、Synthesis and Crystal Stuctures of Phenyl-Acytylmethelene Sulfoxide Complexes with Alkaline Metals Ⅱ、SYNTHESIS AND CRYSTAL STUCTURES OF PHENYL-ACYTYLMETHELENE SULFOXIDE COMPLEXES WITH ALKALINE METALS
     Ⅰ、苯基乙酰甲基亚砜与稀土配合物的合成表征及光致发光 Ⅱ、苯基乙酰甲基亚砜与碱土金属配合物的合成和晶体结构
短句来源
     N,N′-bis(2-salicylaldehyde-amino phenyl)1,3-malondiamide (abbrivated as L) and its complexes of alkaline-earth metals were prepared and characterized by IR,UV,and element analysis.
     合成了N,N′-双(2-水杨醛缩氨基苯基)1,3-丙二酸二酰胺配体及其碱土金属配合物.
短句来源
     A STUDY ON THERMODYNAMICS OF METHYL-CROWN COMPLEXES OF ALKALI AND ALKALINE EARTH METAL IONS
     若干甲基冠醚的碱金属和碱土金属配合物的热力学研究
短句来源
     Synthesis and Crystal Structure of Phenyl-acetyl Methylene Sulfoxide Complexes with Alkaline-Earth Metal
     苯基乙酰甲基亚砜与碱土金属配合物的合成和晶体结构(英文)
短句来源
更多       
  相似匹配句对
     SYNTHESIS AND CHARACTERIZATION OF ALKALINE-EARTH METALS COMPLEXES OF SCHIFF BASE
     碱土金属希夫碱配合物的合成及表征
短句来源
     SYNTHESIS AND FT-IR STUDY OF THE ALKALINEEARTH METAL COMPLEXES WITH MUCIC ACID
     碱土金属—粘液酸配合物的合成及红外光谱
短句来源
     Isomerism in Complexes
     配合物的异构现象
短句来源
     The stacking naphthylene groups in complexes 3?
     配合物3?
短句来源
     The Stability of Alkaline Earth Metal Complexes
     碱土金属络合物的稳定性
短句来源
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The coordination reaction of 2, 3-benzo-8, 11, 15-trimethyl-18-crown-6 (BC3-18-o-6) with eight alkali and alkaline earth (Na, K, Rb, Cs, Mg, Ca, Sr, Ba) chlorides was determined by using home-made titration calorimeter and the stability constants of coordination compounds and enthalpies of coordination reaction were calculated directly. The results show that the coordination compounds of K and Ba have the highest stability among the alkali and alkaline earth compounds, because the diameters of Ba~(2+) and K~+...

The coordination reaction of 2, 3-benzo-8, 11, 15-trimethyl-18-crown-6 (BC3-18-o-6) with eight alkali and alkaline earth (Na, K, Rb, Cs, Mg, Ca, Sr, Ba) chlorides was determined by using home-made titration calorimeter and the stability constants of coordination compounds and enthalpies of coordination reaction were calculated directly. The results show that the coordination compounds of K and Ba have the highest stability among the alkali and alkaline earth compounds, because the diameters of Ba~(2+) and K~+ match the size of crown cavity most properly among the 8 metal ions. The stability of Ba~(2+) compound is higher than that of K~+, because the ion-dipole bond of the former is stronger. The stability sequence of alkali coordination compounds is K>Na>Rb>Cs, and consistent with what was obtained by conductometric titration. The stability sequence of alkaline earth compounds is Ba>Sr>Mg>Ca. The sequence of enthalpy is consistent with that of stability constants.

用自制滴定量热计测定了2,3-苯并-8,11,15-三甲基-18-冠-6与Na,K,Rb,Cs,Mg,Ca,Sr,Ba共8种碱金属及碱土金属氯化物的配位作用,直接计算了配合物稳定常数与配位反应热函.所得结果表明,碱金属与碱土金属中K~+和BaS~(2+)的直径与冠醚腔径匹配最好,其稳定常数最高,而Ba~(2+)配合物稳定性又比K~+的高,因前者的离子-偶极键较后者强.碱金属配合物的稳定性顺序为K>Na>Rb>Cs,与电导法的结果一致.碱土金属配合物的稳定性顺序为Ba>Sr>Mg>Ca.热函的顺序与稳定常数的顺序一致.

The conditions of forming complexes stable in the NMR time scale, for alkali-earth metals -strontium, barium and calcium were investigated. Most suitable ligand for forming such complexes-cryptand C222 was found ~(13)C NMR spectra of akali -earth metal and alkali metal ?sodium, potassium and lithium complexes in deuterochloroform were studied and interpreted. ~(13)C NMR signals of free ligand and its complexes with alkali earth metals which should be used for analytical purposes were assigned. ~(13)C NMR spectra...

The conditions of forming complexes stable in the NMR time scale, for alkali-earth metals -strontium, barium and calcium were investigated. Most suitable ligand for forming such complexes-cryptand C222 was found ~(13)C NMR spectra of akali -earth metal and alkali metal ?sodium, potassium and lithium complexes in deuterochloroform were studied and interpreted. ~(13)C NMR signals of free ligand and its complexes with alkali earth metals which should be used for analytical purposes were assigned. ~(13)C NMR spectra of different mixtures of alkali-earth and alkali metals in chloroform were studied. It was shown that in the spectrum of a mixture of barium, calcium and strontium in concentration of 0.001M for each metal under excess amount of free ligand, individual signals corresponding to free ligand and each of the ions were observed. These signals could be integrated with sufficient accuracy and each characterizes concentration of one of the metal ions correspondingly. These observed for the first time results allow to develop, in principle, a new method of inorganic analysis by ~(13)C NMR spectroscopy. Suggestions of analytical methods for the NMR-determination of alkali-earth metals in their mixture were discussed in detail. The method could be extended to the analysis of more complicated mixtures including alkali metal series. Spectra were run on Varian XL-200 spectrometer.

本文研究了碱土金属离子-锶、钡及钙可以形成在NMR标尺上是稳定配合物的条件。找到了最适合得到这样的配合物的配体-C222穴醚。研究并归属了碱土金属离子以及碱金属-钠、钾及锂配合物在氯仿中的~(13)C NMR谱。检测出了可用于分析自由配体及其与碱土金属配合物的~(13)C NMR信号,还研究了不同比例混合物的碱土金属及碱金属在氯仿中的~(13)C NMR谱,得到了当自由配体过量时在钡、钙及锶每种金属浓度为1×10~(-3)M的谱中可观测到相当于自由配体及每种离子配合的配体的分立信号。这些信号的积分值的精度可以定量地表征金属离子的浓度,所得结果为首次观测到的。它可以作为用~(13)C NMR波谱建立新的无机分析方法。文中并阐明了作溶液中碱土金属混合物NMR测定方法的具体条件,并讨论了将这一方法扩展到包括一系列碱金属在内的更复杂的混合物的可能性。试验在VARIAN XL-200波谱仪上进行。

N,N′-bis(2-salicylaldehyde-amino phenyl)1,3-malondiamide (abbrivated as L) and its complexes of alkaline-earth metals were prepared and characterized by IR,UV,and element analysis.It is showed that L coordinates with alkaline-earth metals with a molar ratio 1∶1.Furthermore,the luminescent properties of the complexes and L are discussed.

合成了N,N′-双(2-水杨醛缩氨基苯基)1,3-丙二酸二酰胺配体及其碱土金属配合物.通过元素分析、IR,UV分析,结果表明:配体与镁、钙、锶、钡均形成1∶1型的配合物.并对配体及配合物的荧光性质做了初步的研究.

 
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