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配合物
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  1 coordination
     The coordination of Na+, K+, Ag+, NH4 , Ni2+, Cu2+, Pb2+and Co2+with 1 + two azacrown ethers was studied respectively by conductometric titration at 25 ℃. The stability constants for the 1∶1 coordination compounds were calculated.
     用电导滴定法研究了两冠醚与 Na+, K+, Ag+, NH4+, Ni2+, Cu2+, Pb2+和 Co2+在 25 ℃的配位作用, 计算了 1∶1 配合物的稳定常数.
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     The reslts indicate rare earth elements can form 1∶1 coordination compounds with the ligand. There is an apparent" gadolinium break"in the system.
     发现在所研究PH范围内,生成1∶1配合物,稀土与N-乙酰基-DL-缬氨酸配合物稳定性呈现“钆断效应。”
短句来源
     The results indicate that rare earth elements can form 1: 1 coordination compounds with the ligand.
     发现在所研究的pH范围内,生成1:1配合物
短句来源
     Protonation constants of the title ligand as well as stability constants of its com-plexes with rare earth elements were determined by pH potentiometric titration in the physio-logical conditions and at 25℃,I=0. 10mol /L respectively。 The results indicate that the rareearth can form 1:1 coordination compounds with glycylL-leucine at the studied range ofpH。
     用pH电位法测定了生理条件下(37℃,I=0.15mol/L)和25℃,I=0.10mol/L时甘氨酰-L-亮氨酸的质子化常数及其稀土配合物稳定常数,结果表明稀土可与该配体形成1:1配合物,并且配合物稳定性呈现明显“四分组效应”。
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  “1配合物”译为未确定词的双语例句
     The maximum absorption wavelengths of T(3-BrP)PS4 and its complex with zinc (Ⅱ) are 434. 8 urn and 422. 0 nm respectively at PH 4.0.The composition of the complex is 1: 1. The apparent molar absorptivity is 3.9×105 L·mol(-1)·cm(-1).
     在pH4,锌与5,10,15,20-四(3-溴-4-磺酸苯基)卟啉形成稳定的1:1配合物,其最大吸收波长位于422.0nm,摩尔吸光系数为3.9×105L·mol(-1)·cm(-1)。
短句来源
     The binding constants of TA to apoOTF, TbN 3+ -apoOTF and Tb3N + -apoOTF-Tb3C+ was 7.15×105, 4.16×106 and 3.77×106 mol-1? L, respectively.
     由蛋白内源荧光测定表明:TA分别与apoOTF,TbN3+-apoOTF和TbN3+-apoOTF-TbC3+结合形成1∶1配合物,其表观结合常数(KA)分别为7.15×105,4.16×106和3.77×106mol-1·L.
短句来源
     In solid state, only complexes of formulas (AuCl_3)_2 L and (AuCl)_2L are formed.
     固态时,Au(Ⅲ)、Au(Ⅰ)与L只形成2∶1配合物(AuCl_3)_2L和AaCl)_2L.
短句来源
     In a medium of 0.5~4.8mol/L HClO_4,Pd reacts with 2-(3,5-dichloro-2-pyridylazo)-5-dimethylaminoaniline to form a stable complex with composition ratio of 1:1. The molar absorptivity is 8.38×10~4L·mol~(-1)·cm~(-1)at616nm.
     在0.5~4.8mol/L HClO_4溶液中,试剂与钯形成稳定的1:1配合物,其最大吸收波长为616nm,表观摩尔吸光系数为8.38×10~4L·mol~(-1)·cm~(-1)。
短句来源
     Results:The optimum extraction condition for cholesterol was as follows: volume of mixed solvent was 120ml,solvent proportion was 12∶1,time for extracting was 30min.
     结果:确定最佳条件为混合溶剂量120ml,混合溶剂比12∶1,配合物提取时间30min。
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  相似匹配句对
     The temperature dependence of magnetic susceptibility(1.8~300 K) indicates that compound 1 is diamagnetic.
     配合物1是抗磁性的。
短句来源
     (1).
     (1)。
短句来源
     1 S.c No.
     1、S.
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  1 coordination
This "increased handedness" prediction was confirmed in an experiment in which 20 left-handed and 20 right-handed individuals performed 1∶ 1 coordination with hand-held rigid pendulums.
      
Findings revealed that during 1:1 coordination (experiment 1) single-limb loading resulted in a decreased relative phase stability, whereas relative phase accuracy depended upon the limb combination.
      
During 2:1 coordination (experiment 2), the loading procedure disturbed the coordination dynamics across all limb combinations.
      
This coordination pattern is termed 2∶:1 coordination, and is an example of one type of relative coordination (Figs.
      
At tracking rates of between 0.2 and 0.6?Hz, 1:1 coordination occurred with a maximum at 0.3?Hz; this rate range was called the 1:1 entrainment band.
      
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Interaction of cisplatin with thymidine, cytidine,guanosine and 5'-ade-nosine phosphate in aqueous solution was studied by 13C NMR. The formation of a series of complexes and the site of complexation of nucleo-sides (or nucleotide) to cisplatin in the reaction systems were ascertained,It was found that bonding occurred at N3 in thymidine and cytidinp with the formation of complexes, cis-[Pt(NH3)2(N3-Thy H-1)2] and cis-[Pt (NH3)2(N3-Cyt)3]3+ In neutral solution, cisplatin reacted with guanosine at N7 or/and N7'...

Interaction of cisplatin with thymidine, cytidine,guanosine and 5'-ade-nosine phosphate in aqueous solution was studied by 13C NMR. The formation of a series of complexes and the site of complexation of nucleo-sides (or nucleotide) to cisplatin in the reaction systems were ascertained,It was found that bonding occurred at N3 in thymidine and cytidinp with the formation of complexes, cis-[Pt(NH3)2(N3-Thy H-1)2] and cis-[Pt (NH3)2(N3-Cyt)3]3+ In neutral solution, cisplatin reacted with guanosine at N7 or/and N7' N1 according to the mol ratio of the reactants forming cis-[Pt(NH3)2(N7-Guo)3]3+ and [Pt(NH3)2 (N7' N1-GuoH-1)]nn+, with a minute amount of [Pt(NH3)2(N7'O(C6)-Guo)]2+ when pH=3. With 5'AMP, cisplatin formed cis-[Pt(NH3)2(N75'-AMP)2]2- or/and cis-[Pt(NH3)3 (N7,N1-5'-AMP)]n in accordance with the mol ratio of the reactants.On the basis of the above findings, the possible mode of reaction of cisplatin with DNA in the cancer cells is discussed. It is probable that Jntrastrand cross linking is formed between cisplatin and DN A through N7, N1 atoms of two neighbouring guanines, which may cause lesion of the cancer cells.

本文用~(13)C NMR法系统研究了溶液中顺式二氯二氨合铂与胸苷、胞苷、鸟苷和5'-腺嘌呤单核苷酸的作用,确定了不同条件下形成配合物的组成及其分子申铂原子与配体的成键方式。在中性介质中顺铂分别与胸苷、胞苷作用,生成N_3配位的顺-[Pt(NH_3)_2(ThyH_(-1))_2]和顺-[Pt(NH_3)_2(Cyt)_2]~(2+);与鸟苷随摩尔比不同相应生成顺-[Pt(NH_3)_2(N_2-Guo)_2]~(2+)和[Pt(NH_3)_2(N_(3,N_1GuoH_(-1))]_n~(n+),当pH=3和摩尔比为1时,尚有微量[Pt(NH_3)_2(N_7,O(C_6)Guo)]~(2+)生成;在中性介质中顺铂与5'-AMP亦随摩尔比不同,生成顺-[Pt(NH_3)_2(N_7-5'-AMP)_2]~(2-)或兼生成顺-[Pt(NH_3)_2(N_7,N_1-5'-AMP)]_n。根据所得结果讨论了顺铂抗癌作用机制,提出了顺铂可能与DNA同一链上相邻二个鸟嘌呤基上的N_7N_1键合形成链内交联的新机制。

Fifteen new platinum compounds of the type have been synthesized. Infrared spectra of the complexes showed that the ligand molecules of a—aminoacid ester were coordinated to the metal Via only amino group. The values of dipole moment and the results of thiourea reaction indicated that all of the complexes were of cis configuration with the exception of which possessed trans configuration. X-ray diffraction analysis of the Compounds confirmed these results. The main factors resnonsible for such configurations...

Fifteen new platinum compounds of the type have been synthesized. Infrared spectra of the complexes showed that the ligand molecules of a—aminoacid ester were coordinated to the metal Via only amino group. The values of dipole moment and the results of thiourea reaction indicated that all of the complexes were of cis configuration with the exception of which possessed trans configuration. X-ray diffraction analysis of the Compounds confirmed these results. The main factors resnonsible for such configurations of the synthesized complexes are discussed.

合成了铂的十五种[PtA_2X_2]型配合物(A=Et-DL-a-Ala,Et-L-a-ALa,Et-DL-a-Phs,Et-L-a-Phe,Et-DL-a-Asp,Et-L-a-Asp,Et-DL-a-Ser,1/2Et-L-Lys;X=ClI)和一种配[Et-DL-a-PheH]_2[Ptcl_4]。红外光谱研究确定了[PtA_2X_2]型配合物中铂原子仅和酯的氨基配位,偶极矩和改良硫脲反应确定了[Pt(Et-a-Phe)_2Cl_2](DL, L),[Pt(Et-a-Asp)_2cl_2](DL、L)为反式构型外,其余均为顺式。完成的[Pt(Et-L-a-Asp)_2cl_2],[Pt(Et-L-a-Phe)_2cl_2]和(Et-DL-a-PheH)_2[PtCl_4]三种化合物的x射线结构分析进一步确证了上述结果。在所得结果基拙上讨论了决定配合物构型的可能因素。

Fifteen new platinum compounds of the type [PtA_2X_2](A=Ei—DL—a—Ala, Et—L—a—Ala, Et—DL—a—Phe, Et—L—a—Phe , Et—DL—a—Asp , Ei—L—a—Asp,Et—DL—a—Ser, 1/2Et—L—Lys, X = Cl, I) and (Et—DL—a—PheH)_2[PtCl_4] have been synthesizedo Infrared spectra of the complexes showed that the ligand molecules of a—aminoacid ester were coordinated to the metal Via only amino group. The values of dipole moment and the results of thiourea reaction indicated that all of the complexes were of cis configuration with the exception of [Pi(M—a—Phe)_2Cl_2]...

Fifteen new platinum compounds of the type [PtA_2X_2](A=Ei—DL—a—Ala, Et—L—a—Ala, Et—DL—a—Phe, Et—L—a—Phe , Et—DL—a—Asp , Ei—L—a—Asp,Et—DL—a—Ser, 1/2Et—L—Lys, X = Cl, I) and (Et—DL—a—PheH)_2[PtCl_4] have been synthesizedo Infrared spectra of the complexes showed that the ligand molecules of a—aminoacid ester were coordinated to the metal Via only amino group. The values of dipole moment and the results of thiourea reaction indicated that all of the complexes were of cis configuration with the exception of [Pi(M—a—Phe)_2Cl_2] and [Pi(Et-a-Asp)_2Cl_2] (DL-, L-) which possessed trans configuration. X-ray diffraction analysis of the Compounds [Pt (Et— —L—a—Phe)_2Ol_2] and [Pt(Et—L—a—Asp)_2Ol_2] confirmed these results. The main factors responsible for such configurations of the synthesized complexes are discussed.

合成了铂的十五种[PtA_2X_2]型配合物 (A=Et—DL—a—ala,Et—L—a—ALa,Et—DL—a—Phe,Et—L—a—Phe,Et—DL—a—Asp,Et—L—a—Asp,Et—DL—a—Ser,1/2Et—L—Lys;;X=ClI)和一种配盐[Et—DL—a—PheH]_2[PtCl_4]。红外光谱研究确定了[PtA_2X_2]型配合物中铂原子仅和酯的氨基配位,偶极矩和改良硫脲反应确定了除[Pt(Et—a—Phe)_2Cl_2](DL,L),[Pt(Et—a—Asp)_2cl_2](DL、L)为反式构型外,其余均为顺式。完成的[Pt(Et—L—a—Asp)_2cl_2],[Pt(Et—L—a—Phe)_2cl_2]和(Et—DL—a—PheH)_2[PtCl_4]三种化合物的x射线结构分析进一步确证了上述结果。在所得结果基础上讨论了决定配合物构型的可能因素。

 
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