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   carbon-carbon bond 的翻译结果: 查询用时:0.185秒
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carbon-carbon bond
相关语句
  碳—碳键
     Solvent Effect on the Homolytic Reaction of Carbon-Carbon Bond
     碳—碳键均裂反应的溶剂效应
短句来源
     Some Application of Samarium Diiodide in Deoxygenation, Reduction and Carbon-Carbon Bond Formation Reaction
     二碘化钐在脱氧、还原和碳—碳键形成反应中的应用
短句来源
     Synthesis of Chiral Ferrocene Ligands and Their Applications in the Reaction of Carbon-Carbon Bond Formation
     手性二茂铁配体的合成及其在碳—碳键形成反应中的应用研究
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     EHMO SELF-CONSISTENT CALCULATIONS OF CARBON-CARBON BOND LENGTHS
     EHMO的碳—碳键长自洽计算
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     Catalytic asymmetric carbon-carbon bond formation is one of the most active research areas in organic synthesis.
     催化形成不对称碳—碳键在有机合成中是一个非常活跃的领域。
短句来源
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  碳-碳键
     Part 1. The Baylis-Hillman Reaction of AcrylamideThe Baylis-Hillman reaction, the coupling of α, β-alkenes with carbon electrophiles under the catalysis of tertiary amines, is emerging as valuable carbon-carbon bond forming reaction.
     第一部分 丙烯酰胺参与的Baylis-Hillman反应研究Baylis-Hillman反应是α,β-不饱和烯烃在三级胺的催化下与亲电子试剂形成新的碳-碳键的反应。
短句来源
     This paper mainly introduces a new solvent-supercritical carbon doxide and its application in some of carbon-carbon bond generation reaction such as:DielsAlder reaction and Kolbe-Schmitt reaction etc;
     主要介绍了一种全新的溶剂——超临界二氧化碳及其在一些生成碳-碳键反应中的应用,此类反应包括:Diels-Alder反应与Kolbe-Schmit反应等。
短句来源
     The carbon-carbon bond generation reaction in supercritical fluids
     超临界流体在生成碳-碳键反应中的应用
短句来源
     ZSM-5 zeolite is a kind of mesothyrid zeolite, and its aperture is only about 0.6nm. Though it can be used in different catalytic reactions(catalytic cracking, molecular rearrangement, intermolecular coupling, carbon-carbon bond formation, isomerization etc), when the reactant or the product molecule's size dimension is greater than the aperture of the molecular sieve, the catalytic reaction will be limited.
     ZSM-5沸石属于中孔沸石,孔径只有0.6nm左右,它可以应用在不同类型的催化反应中(催化裂化、分子重排、分子间的耦合、碳-碳键的生成、异构化等),但是当反应物分子或者产物分子尺寸大于分子筛孔径时,催化反应就会受到限制。
短句来源
     ADVANCE IN CARBON-CARBON BOND TYPE INITIATION SYSTEM FOR ‘LIVING’ RADICAL POLYMERIZATION
     碳-碳键型活性自由基聚合引发体系的研究现状
短句来源
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  碳碳键
     The carbon-carbon bond formation is one of most functional reactions in organicchemistry.
     碳碳键形成反应是有机化学最重要反应。
短句来源
     (3) p-Nitrotoluene and p-ethylnitrobenzene produced carbon-carbon coupling products with β-CD/NaOH system, which can provide a new method of the formation of carbon-carbon bond and increase of carbon chain.
     (3) 对硝基甲苯和对硝基乙苯在β-环糊精/NaOH复合体系中,生成了相应的烃基偶联产物,为碳碳键的形成和碳链的增长提供了一种新的合成方法;
短句来源
     Baylis-Hillman reaction, as one of the high efficient carbon-carbon bond formationreaction, meets the requirements of atom economy and high levels of selectivity, and themultifunctional B-H adducts are versatile building blocks for the synthesis of variousbiologically active compounds and natural products.
     Baylis-Hillman反应具有反应选择性好,原子经济性等特点,产物具有多个能进一步转换的官能团,可用来合成许多具有生物活性的分子和天然产物,目前已日趋成为一种构建碳碳键的重要的高效合成途径。
短句来源
     As an efficient method in carbon-carbon bond formation, Prins reaction had drawn a lot of attention since its first discovery over one century ago.
     Prins反应作为有机合成中一个经典的碳碳键构成方法,近来重新引起有机合成化学工作者的重视.
短句来源
     Carbon-carbon bond forming reactions are most important transformations in organic synthesis.
     碳碳键的形成反应在有机合成中占有非常重要的地位。
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  “carbon-carbon bond”译为未确定词的双语例句
     The Michael reaction is one of the most efficient methods for effecting carbon-carbon bond formation and has wide synthetic application.
     Michael反应是形成C-C键的最有效的方法之一,在合成上具有广泛地应用。
短句来源
     The Barbier-Type reaction is one of the most important methods for the construction of carbon-carbon bond in organic synthesis.
     而Barbier-Type反应又是其中最重要的反应之一。
短句来源
     Palladium-catalyzed Suzuki-Miyaura cross-coupling reaction of organoboron with organic electrophiles has been recognized as one of the most important carbon-carbon bond building reactions.
     钯催化的有机硼试剂与有机亲电试剂的Suzuki-Miyaura交叉偶联反应是构建碳一碳键的最重要的反应之一。
短句来源
     2.The formation of carbon-carbon bond is attributed to the surface reaction of adsorbed ether-like species with the elimination of water.
     2.C-C键是由类醚物吸附态通过水的消除反应形成的。
短句来源
     In the surface-enhanced Raman spectra of three amino acids, the peak bands at 900-930 cm -1, near 1 100 cm -1 and near 1 400 cm -1, corresponding to the carbon-carbon bond, carboxyl and amino group vibrations, respectively, were markedly increased on the silver colloidal particles. It means that the Raman spectra of polar groups such as COO-, NH 2 and C-COO- were strongly enhanced via the carboxyl group.
     在所得SERS图谱中 ,表征C—C基团的 90 0~ 930cm-1谱带、表征NH2 基团的 110 0cm-1左右谱带和表征COO-基团的14 0 0cm-1附近的谱带振动都得到显著加强 ,其原因主要是通过羧基基团及氨基基团与银粒子表面产生吸附 ,增强机制属于化学增强 ,为短程效应。
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  carbon-carbon bond
Enantioselective Transition-Metal Catalyzed Carbon-Carbon Bond Formation Reactions using Novel Chiral Ferrocenes and Cyclophanes
      
This paper reviews authors' results with the development of new syntheses of ILs and applications in carbon-carbon bond formation (dimerisation of methyl acrylate) and redistribution (ring closing metathesis) reactions using ionic precatalysts.
      
Palladium- and Nickel-Catalysed Aromatic Carbon-Carbon Bond Formatio
      
Heterogeneous enantioselective carbon-carbon bond formation: role of the inorganic support in the synthesis and activity of supp
      
It is shown that the significant alternation of the carbon-carbon bond lengths is largely independent of the nature of the end group, the arrangement of long and short bonds being determined by the form of the polyene.
      
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UHF-INDO LCAO SCF MO calculations of cyanoacetio acid free radical (NCCHCOOH)were carried out. The program used is Pople's CNINDO. Data calculated for radical structure of cyanoacetic acid are presented and compared with available experimental results in Tables 1 and 2 and Fig. 2~7 in the Chinese Text.It is confirmed by ESR spectra study and INDO calculation that the free radical trapped in the irradiated single crystal of cyanoacetic acid is in the form of NCCHCOOH. Molecular orbital coefficient, electron density,...

UHF-INDO LCAO SCF MO calculations of cyanoacetio acid free radical (NCCHCOOH)were carried out. The program used is Pople's CNINDO. Data calculated for radical structure of cyanoacetic acid are presented and compared with available experimental results in Tables 1 and 2 and Fig. 2~7 in the Chinese Text.It is confirmed by ESR spectra study and INDO calculation that the free radical trapped in the irradiated single crystal of cyanoacetic acid is in the form of NCCHCOOH. Molecular orbital coefficient, electron density, net atomic charge, spin density and hyperfine coupling constant are calculated for NCCHCOOH radical.Calculations of the isotropic hyperfine coupling constants and the total energy as a function of the NC--C--and--COOH torsion angle θ were carried out and the planar conformation is established in correspondence with a minimum in the total energy of the potential barrier of internal rotation about the carbon-carbon bond calculated to be 7.22 kcal/mol. The isotropic hyperfine coupling constant varies with different torsion angle θ. The best agreement between calculated and observed isotropic constants is found for θ=37°.

本文应用UHF-INDO方法研究了氰乙酸自由基的结构.计算了氰乙酸自由基的本征值.本征向量、价电子密度、自旋密度、各向异性耦合常数、各向同性耦合常数以及总能量、键能和偶极矩:计算的各向同性耦合常数和各向异性耦合常数与实验值符合很好.

Diethyl 2,3-dicyano-2, 3-diphenylsuccinate (I) was synthesized by oxidative coupling" reaction of ethyl a-cyanophenylacetate with Cu ++-TMEDA-O3 system. The structure of I is determined on the basis of IR, 1HNMR, UV, MS and elemental analysis, and through alkaline hydrolysis of I to 2,3-diphenylsuccinonitrite. The configuration of I is identified to be the meso-isomer by x-ray crystallographic analysis in collaboration with the Institute of Physical Chemistry of Beijing University. The conversion-time curves...

Diethyl 2,3-dicyano-2, 3-diphenylsuccinate (I) was synthesized by oxidative coupling" reaction of ethyl a-cyanophenylacetate with Cu ++-TMEDA-O3 system. The structure of I is determined on the basis of IR, 1HNMR, UV, MS and elemental analysis, and through alkaline hydrolysis of I to 2,3-diphenylsuccinonitrite. The configuration of I is identified to be the meso-isomer by x-ray crystallographic analysis in collaboration with the Institute of Physical Chemistry of Beijing University. The conversion-time curves are determined when I was used as initiator in the bulk polymerization of styrene at 80, 90,100, 110 and 120℃ respectively. Mw, Mn and dispersion coefficients of polymers obtained with a fixed amount of I as initiator in the bulk polymerization of styrene at 70, 80, 90, 100, 110, 120 and 150℃ or with various amounts of I as initiator at 100℃ are determined by GPC. The results show that I is a safe and efficient carbon-carbon bond initiator.

α-氰基苯乙酸乙酯用Cu~(++)-TMEDA-O_2进行氧化偶联反应,产物经色谱或重结晶法分离,经红外光谱、紫外光谱、~1H核磁共振谱、质谱、元素分析鉴定及其碱性水解产物等认定为内消旋-2,3-二氰基-2,3-二苯基丁二酸二乙酯(Ⅰ).用Ⅰ引发苯乙烯进行本体聚合,测定了聚合温度和Ⅰ的用量对苯乙烯的转化率~时间曲线的影响,测定了各种条件下所得聚苯乙烯的分子量及其分散系数.1是一种既有效又安全的碳—碳键型引发剂.

A program for the calculation of carbon-carbon bond length is proposed for the EHMO method. In the process of self-consistent calculation, the following empirical relationship has been introdu-ced,RAB= 1.7547-3273QAB, (1-1)which exists between the bond length RAB and the overlap population QAB From the output of every iteration we can calculate the carbon-carbon bond length by equation(1-1),and then take it as the input of the next iteration. This process is continued until the input and the...

A program for the calculation of carbon-carbon bond length is proposed for the EHMO method. In the process of self-consistent calculation, the following empirical relationship has been introdu-ced,RAB= 1.7547-3273QAB, (1-1)which exists between the bond length RAB and the overlap population QAB From the output of every iteration we can calculate the carbon-carbon bond length by equation(1-1),and then take it as the input of the next iteration. This process is continued until the input and the calculated bond length are identical.fhe calculated C-C bond lengths for several different kinds of orqanir molecules agree fairly well with the experimental data.

本文利用重叠布居和碳—碳键长的经验关系式,在EHMO计算程序中引入键长自洽,对有机分子碳—碳键长的计算,其结果与测定值符合较好。

 
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