DYNAMIC H-1 NMR STUDIES OF SOLVENT EFFECT FOR BENZO-AZACROWN-ETHERS IN CDCl3 SOLUTIONS
文献类型：期刊论文
| 作者 | Zeng Jingcheng1; Shen Lianfang1; Lu Tianbao2; Wu Chengtai2 |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 1988 |
| 卷号 | 4期号:3页码:244-249 |
| 英文摘要 | The influences (Dilution Shift Elf cot) of sample concentration on H-1 NNIR spectra and spin-lattice relaxation times in benzo-azacrown-ether (CE) -CDCI3 solutions were discussed in this paper. It was considered that the formation of hydrogen bond complex between CE and CDCI3 is not the major cause leading to Dilution Shift Effect, Based on experiments, a reaction mechanism tor CE in CDCI3-"tertiary amine-tertiary amino salt exphange" was proposed, which has successfully explained the Dilution Shift Effect. The equilibrium constants K-2[(2..2 +/- 0.4) x 10(-2) mol L-1, (1.9 +/- 0.4) x 10(-2) mol L-1 and (1.3 +/- 0.4) x 10(-2) mol L-1 respectively] and exchange rate constants k [4500 +/- 1000 s(-1), 15000 +/- 3000 s(-1)' and 6000 +/- 1500, s(-1) respectively) for this mechanism of "tertiary amine-tertiary amino salt exchange of I, II and III (see eaporimental section) were obtained through simulation of chemical shift and line shape of H-1 NMR spectra of CE in CDCI3. Also the effects of substitute gronps of alpha-C to N on the Dilution Shift Effect discussed. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000207571400005 |
| 公开日期 | 2015-07-28 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/4368]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Acad Sinica, Wuhan Inst Phys, Lab Magnet Resonance & Atom & Mol Phys, Wuhan, Peoples R China 2.Wuhan Univ, Dept Chem, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng Jingcheng,Shen Lianfang,Lu Tianbao,et al. DYNAMIC H-1 NMR STUDIES OF SOLVENT EFFECT FOR BENZO-AZACROWN-ETHERS IN CDCl3 SOLUTIONS[J]. ACTA PHYSICO-CHIMICA SINICA,1988,4(3):244-249. |
| APA | Zeng Jingcheng,Shen Lianfang,Lu Tianbao,&Wu Chengtai.(1988).DYNAMIC H-1 NMR STUDIES OF SOLVENT EFFECT FOR BENZO-AZACROWN-ETHERS IN CDCl3 SOLUTIONS.ACTA PHYSICO-CHIMICA SINICA,4(3),244-249. |
| MLA | Zeng Jingcheng,et al."DYNAMIC H-1 NMR STUDIES OF SOLVENT EFFECT FOR BENZO-AZACROWN-ETHERS IN CDCl3 SOLUTIONS".ACTA PHYSICO-CHIMICA SINICA 4.3(1988):244-249. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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