Direct on-line method to monitor the dynamic structure of noncovalent titanium complexes in solution by using cold-spray ionization time-of-flight mass spectrometry
文献类型：期刊论文
| 作者 | He JM(何久明) ; Zeper Abliz ; Zhang RP(张瑞萍) ; Liang YX(梁毓学) ; Ding KL(丁奎岭) |
| 刊名 | Anal. Chem.
 |
| 出版日期 | 2006 |
| 卷号 | 78期号:13页码:4737-4740 |
| ISSN号 | 0003-2700 |
| 其他题名 | 用冷喷雾电离TOF-MS直接即时监测溶液中非共价钛络合物动态结构的分析方法 |
| 通讯作者 | Zeper Abliz |
| 英文摘要 | In this paper, we report the feasibility of using the online cold-spray ionization time-of-flight mass spectrometry (CSI-TOFMS) method to monitor directly the labile noncovalent organometallic complexes formed in the substitution reaction between a chiral titanium asymmetric catalyst and organic acid in the toluene solvent. The comparison between the conventional ESI and CSITOFMS spectra of [(S) 1](2)Ti-2[(S)2](2) in THF indicated that the CSI-TOFMS is an effective method to characterize the structures of labile organometallic complexes in solution. A new strategy was designed so that [( S)1](2)Ti-2[(S)2](2) and organic acid solution were delivered independently to the CSI ion source by two infusion syringe pumps, and they mixed at a triple valve, and then the substitution reaction occurred in the sprayer. The mix and reaction time was similar to 5 s and can be adjusted by the length of the PEEK tube and the flow rate. The reaction products were ionized and detected directly by the CSI-TOFMS. Organic acids, such as formic, acetic, phenylpropionic, anisic, and paramethoxylphenylactic acids, were investigated. From the on line CSI-TOFMS spectra, it is observed clearly that one or two ( S) 2 group( s) can be substituted by the added acid to form new species. The results obtained here demonstrated that the designed strategy with on line CSI-TOFMS is effective and reliable to elucidate the dynamic structure of noncovalent titanium complexes in reaction solution. |
| 学科主题 | 金属有机化学 ; 分析化学 |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1021/ac0603476 |
| 语种 | 英语 |
| WOS记录号 | WOS:000238665200069 |
| 公开日期 | 2013-02-22 |
| 源URL | [http://202.127.28.38/handle/331003/17821]  |
| 专题 | 上海有机化学研究所_金属有机化学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | He JM,Zeper Abliz,Zhang RP,et al. Direct on-line method to monitor the dynamic structure of noncovalent titanium complexes in solution by using cold-spray ionization time-of-flight mass spectrometry[J]. Anal. Chem.,2006,78(13):4737-4740. |
| APA | 何久明,Zeper Abliz,张瑞萍,梁毓学,&丁奎岭.(2006).Direct on-line method to monitor the dynamic structure of noncovalent titanium complexes in solution by using cold-spray ionization time-of-flight mass spectrometry.Anal. Chem.,78(13),4737-4740. |
| MLA | 何久明,et al."Direct on-line method to monitor the dynamic structure of noncovalent titanium complexes in solution by using cold-spray ionization time-of-flight mass spectrometry".Anal. Chem. 78.13(2006):4737-4740. |
入库方式： OAI收割
来源：上海有机化学研究所
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