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配合物结构     
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  complex structure
     STUDIES OF THE EXTRACTION BEHAVIOR OF Am ̄(3+) AND LANTHANIDES WITH 7804 EXTRACTANT Ⅱ.COMPLEX STRUCTURE AND ANALYSIS OF EXTRACTION MECHANISM
     2-羟基-5-烷基苯乙肟萃取Am~(3+)和镧系元素行为的研究Ⅱ.配合物结构与萃取机理的分析
短句来源
     DETERMINATION OF SUSCEPTIBILITU AND COMPLEX STRUCTURE OF[Cu(NH_(34)]SO_4 AND(Co(NH_3))6]Cl_3 BY GOUY METHOD
     Gouy法测定〔Cu(NH_3)_4〕SO_4和〔Co(NH_3)_6〕Cl_3的磁化率与配合物结构研究
短句来源
     These results could be attributed to the difference in the substrate nature, complex constituent and complex structure.
     这可能源自底物本身的特性以及配合物结构的差异 .
短句来源
     The order of catalytic ability of different metal ions was interpreted by the stability of the complex structure relative to the structure of the ground state intermediate by using the method devised by Kurz for the catalyzed reaction.
     不同金属离子催化活性的大小与金属离子的电荷密度无关 ,可用配合物结构相对于底物中间态的稳定性得到解释。
短句来源
  complexes structure
     Complexes Structure of the Sodium Borate and Resol Phenol-formaldehyde Resin and Their Reaction Mechanism
     硼酸钠/甲阶酚醛树脂配合物结构和反应机理
短句来源
  structure of the complexes
     Studies on the Reaction and Structure of the Complexes of Alkaline Earth Metal with Chlorophosphonazo-DBC
     碱土金属与DBC-偶氮氯膦配位反应及配合物结构的研究
短句来源
     The structure of the complexes was characterized by IR, 1H NMR and elemental analysis.
     配合物结构经IR,1HNMR和元素分析确证。
短句来源
     In tne range of concentration studied, decrease in equivalent conductance is in agreement with the prediction on the basis of the structure of the complexes.
     在所研究的浓度范围内,碱金属离子-冠醚体系当量电导的降低程度与按配合物结构的预测一致.
短句来源
     Five complexes of N-Salicylideneamino acid transition metals were synthesized,and they were SalPheCo、SalPheMn、SalPheNi、SalPheCu、SalPheFe. The structure of the complexes were characterized by thermogravimetric and differential thermal analysis、infrared,small area X-ray photoelectron spectroscopy(XPS)and ICP-AES.
     合成了5 种苯丙氨酸希夫碱过渡金属配合物Mn(Sal- Phe)、Fe(Sal- Phe) 、Co(Sal- phe) 、Ni(Sal- Phe)、Cu(Sal- Phe),对配合物进行了热重- 差热分析、红外光谱分析、XPS分析,测定了配合物的金属含量(ICP) ,对配合物结构进行了初步分析
短句来源
     The effect of surfactant,effect structure of the complexes,and effect of temperature on the reaction rate of BNPP catalytic hydrolysis have been discussed.
     本文还讨论了配合物结构、反应体系温度以及胶束对催化BNPP水解的影响。
短句来源
  coordination structure
     HYPERSENSITIVE TRANSITION SPECTRUM OF f-ELEMENT AND COORDINATION STRUCTURE
     f元素超灵敏跃迁光谱和配合物结构
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      complex structure
    LetM=G/Γ be a compact nilmanifold endowed with an invariant complex structure.
          
    to obtain this result, we first prove the above isomorphism for compact nilmanifolds endowed with a rational invariant complex structure.
          
    This is done using a descending series associated to the complex structure and the Borel spectral sequences for the corresponding set of holomorphic fibrations.
          
    Let (J,g) be a Hermitian structure on a six-dimensional compact nilmanifold M with invariant complex structure J and compatible metric g, which is not required to be invariant.
          
    Electromagnetic driving technology is based on traditional technology, has a low thrust-weight ratio, and needs deceleration devices with a cumbrous system or a complex structure.
          
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      complexes structure
    New type of organocobalt complexes structure of η2-aminomethylenebis(2,2'-bipyridyl) cobalt (III)
          
    Dichlorobis(cycloalkylamine)platinum(II) complexes structure activity relationship on the human MDA-MB-231 breast cancer cell li
          
    Robin plants have higher ability to hardening and higher resistance to thermal damage of the pigment-protein complexes structure and the activity of PS2 than cv.
          
    The effects of the complexes structure and reactive temperature on the rate of catalytic PNPP hydrolysis have been also examined.
          
      structure of the complexes
    We have developed a novel method maintaining the native structure of the complexes and allowing reconstitution of up to 80% of the carotenoids as compared to the control.
          
    The influence exerted by the acidity, Zr-DBP concentraiton, and degree of extractant saturation with the metal on the structure of the complexes was examined.
          
    The influence of the valence state of the Os atoms and of the nature of the halogen atoms on the composition and structure of the complexes formed and some characteristics of the coordination sphere of Os were considered.
          
    The spectral parameters were found to correlate with the structure of the complexes and their thermal stability.
          
    The magnetochemical properties of the title complexes were compared and the anion nature was shown to influence the structure of the complexes and the strength of antiferromagnetic interaction.
          
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      coordination structure
    Synthesis of amorphous and crystalline double hydrated cobalt copper and nickel copper ammine diphosphates with a coordination structure is described.
          
    The whole complex molecule is composed of two close parts in which every one has a nine-coordination structure as a distorted monocapped square antiprism.
          
    The whole complex molecule is composed of two close parts in which every one has a nine-coordination structure as a distorted monocapped square antiprism.
          
    The crystal structures reveal that TDD acts as a tetradentate ligand, forming a ring-like coordination structure with its oxygen atoms together with one oxygen atom of the bidentate picrate.
          
    Results showed that the Co-HDEHP complex displayed a dehydrated tetrahedral coordination structure of the chelate type inn-heptane and the aggregates were rather small.
          
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    K3[Fe(C2H5P2O7)2]·4,5H2O, and K3[Fe(C2H6P2O7)2(OH)2]·3H2O have, been prepared in. solid state and characterized by chemical analysis, Mossbauer spectra, infrared spectra, gravimetric: and differential thermal analysis and conductivity measurement.The two compounds are both high spin complexes. From quadru-pole splitting, the symmetry around Fe atom has been shown by Mossbauer parameters of these complexes as . compared with the values of Fe(Ⅲ)-complexes, The, changes of isomer shifts are dependent on the strength...

    K3[Fe(C2H5P2O7)2]·4,5H2O, and K3[Fe(C2H6P2O7)2(OH)2]·3H2O have, been prepared in. solid state and characterized by chemical analysis, Mossbauer spectra, infrared spectra, gravimetric: and differential thermal analysis and conductivity measurement.The two compounds are both high spin complexes. From quadru-pole splitting, the symmetry around Fe atom has been shown by Mossbauer parameters of these complexes as . compared with the values of Fe(Ⅲ)-complexes, The, changes of isomer shifts are dependent on the strength of covalent bond between Fe (Ⅲ) and the ligands.The results of IR spectra and other measurements have also been discussed briefly. A probable stfuctural formula is given for each complex.

    制备了K_3[Fe(C_2H_5P_2O_7)_2]·4.5H_2O和K_3[Fe(C_2H_6P_2O_7)_2(OH)_2]·3H_2O两种固体配合物,用化学分析、穆斯堡尔谱、红外光谱、差热热重分析和电导测定等研究了它们的性质,推测了配合物的结构。

    The preparation, characterization, spectroscopic studies and data on thermo-and magnetic measurments of coordination compounds of di(2-ethylhexyl) isopropylphosphonate(DIOPP)with nitrates of lantha- nide (except promethium) are described As shown by elemental analysis the composition of the coordination compounds prepared by saturation method can be represented as Ln(NO_3)_3·3DIOPP which is well coincided with the results of method of continuous variation.The IR spectra of the Ln(NO_3)_3·3DIOPP demonstrated...

    The preparation, characterization, spectroscopic studies and data on thermo-and magnetic measurments of coordination compounds of di(2-ethylhexyl) isopropylphosphonate(DIOPP)with nitrates of lantha- nide (except promethium) are described As shown by elemental analysis the composition of the coordination compounds prepared by saturation method can be represented as Ln(NO_3)_3·3DIOPP which is well coincided with the results of method of continuous variation.The IR spectra of the Ln(NO_3)_3·3DIOPP demonstrated that the characteristic frequency including v_(p-o-M), V_(p-o-c) and V_(M-O(NO_3~1))) increased with the increase of the atomic number of lanthanide. It may be rationalized as the weakening effect of the coordination associated with lanthanide contraction. Far IR spectra of the coordination compounds showed very small variation of v_(M-O) from lanthanum to lutetium in the region of 214~219 cm~(-1) only v_(Y-O) located at highest 251cm~(-1).The ~1H NMR spectra indicated that the chemical shift of proton at the α-carbon atom of the alkoxy group of ligand in the complexes of light rare earths located at down field while for heavy rare earths, at up field. It may, however, be contributed to the different geometrical. configuration of the complexes investigated.The susceptibiity of complexes were determined in 2000~9000 G region and the effective magnetic moment of metal ions in the complexes were estimated. The result also shows that the coordination of lanthanide's ion with DIOPP is very weak. It is interesting to note that the effective magnetic moment has not yet been studied in a systematic way as to lanthanide nitrate and teir complexes with neutral organophosphorus ligands.As shown by the TG and DTA diagram of the complexes there are two thermo-decomposition process in all cases. An explaination was given for the variation of weight loss between experimental and theoretical data for the proposed reaction scheme.

    采用饱和溶解法制得了异丙基膦酸二-2-乙基己基酯与除钷以外的镧系金属硝酸盐的配合物。通过元素分析、红外光谱、核磁共振、差热分析和磁性质的研究,讨论了配合物的结构。对配合物的红外光谱特征频率与镧系元素原子序数之间的变化关系也做了探讨

    The coordination reaction of Na~+, K~+, Rb~+ and Cs~+ with benzo-l5-crown-5, 18-crown-6 and the newly synthesized cyclic polyethers 2, 3-benzo-8, l5-dimethyl-18-crown-6, 2, 3-benzo-8, 11, 15-trimethyl-18-crown-6 in methanol at 25℃ has been studied by conductometrio titration. The stability constants for the 1:1 coordination compounds were calculated. The marked selectivity of 18-crown-6 toward alkali metal ions was not found in its methyl derivatives. The induction effect of the benzene ring and methyl group...

    The coordination reaction of Na~+, K~+, Rb~+ and Cs~+ with benzo-l5-crown-5, 18-crown-6 and the newly synthesized cyclic polyethers 2, 3-benzo-8, l5-dimethyl-18-crown-6, 2, 3-benzo-8, 11, 15-trimethyl-18-crown-6 in methanol at 25℃ has been studied by conductometrio titration. The stability constants for the 1:1 coordination compounds were calculated. The marked selectivity of 18-crown-6 toward alkali metal ions was not found in its methyl derivatives. The induction effect of the benzene ring and methyl group on polyether ring reduced the stability of the coordination compounds. In methanol, the stability sequence of the compounds of alkali metal ions with 18-crown-6 was K~+>Rb~+>Cs~+>Na~+, that of its dimethyl derivative was K~+> Rb~+>Na~+>Cs~+ and that of its trimethyl derivative was K~+>Na~+>Rb~+>Cs~+, that is, the methyl substituent had a weaker influence on the stability of Na~+ compound than on that of Rb~+ or Cs~+ compound. In tne range of concentration studied, decrease in equivalent conductance is in agreement with the prediction on the basis of the structure of the complexes. The above results may give a clue for modifying the structure of a crown ether for specified selectivity.

    用电导法研究了甲醇溶液中Na~+,K~+,Rb~+,Cs~+与新合成的冠醚2,3-苯并-8,15-二甲基-18C6,2,3-苯并-8,11,15-三甲基-18C6以及苯并-15C5,18C6的配位作用,计算了1∶1配合物的稳定常数.18C6对碱金属离子具有显著的选择性,而其二甲基及三甲基取代物的选择性则较差.冠醚环上引入苯环及甲基使配合物的稳定常数降低,在甲醇中碱金属离子与18C6配合物稳定性次序为K~+>Rb~+>Cs~+>Na~+,2,3-苯并-8,15-二甲基-18C6配合物稳定性次序为K~+>Rb~+>Na~+>Cs~+,2,3-苯并-18,11,15-三甲基-18C6配合物稳定性次序为K~+>>Na~+>Rb~+>Cs~+.引入甲基对Na~+配合物稳定性的影响小于K~+,Rb~+,Cs~+,即阳离子半径对配合物稳定性有较大的影响.在所研究的浓度范围内,碱金属离子-冠醚体系当量电导的降低程度与按配合物结构的预测一致.本文结果为设计具有特定选择性的冠醚结构提供了线索.

     
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