I. V. Skovpin, S. V. Sviyazov, D. B. Burueva, L. M. Kovtunova, A. V. Nartova, R. I. Kvon, V. I. Bukhtiyarov, I. V. Koptyug
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引用次数: 0
摘要
摘要制备了固定化铑和铱络合物，并通过 X 射线光电子能谱进行了表征。在固定化铱络合物上用对氢氢化乙炔的过程中，首次在气相中直接检测到了超极化 13C-乙烯。极化 13С-乙烯的线形明确表明，固定化铱络合物上乙炔三键的氢加成是通过同步加成立体选择性进行的。研究表明，在固定化铱络合物上用对氢选择性地进行乙炔加氢是一种富集乙烯核自旋异构体的有效化学方法。
Nonequilibrium Nuclear Spin States of Ethylene during Acetylene Hydrogenation with Parahydrogen over Immobilized Iridium Complexes
Immobilized rhodium and iridium complexes have been prepared and characterized by X-ray photoelectron spectroscopy. For the first time, hyperpolarized 13C-ethylene was detected directly in the gas phase during acetylene hydrogenation with parahydrogen over immobilized iridium complexes. The line shape of polarized 13С‑ethylene unambiguously indicates that the hydrogen addition to the triple bond of acetylene over immobilized iridium complexes proceeds stereoselectively via syn-addition. It has been shown that the selective acetylene hydrogenation with parahydrogen over immobilized iridium complexes is an efficient chemical method for enriching the nuclear spin isomers of ethylene.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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