New aspects of parahydrogen-induced polarization for C2-C3 hydrocarbons using metal complexes

被引：4

作者：

Kovtunov, K. V. ^{[1
,2
]}

Burueva, D. B. ^{[1
,2
]}

Sviyazov, S. V. ^{[1
,2
]}

Salnikov, O. G. ^{[1
,2
,3
]}

Goodson, B. M. ^{[4
]}

Chekmenev, E. Y. ^{[5
,6
]}

Koptyug, I. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Int Tomog Ctr, 3a Ul Inst Skaya, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, 2 Ul Pirogova, Novosibirsk 630090, Russia

[3] Russian Acad Sci, Siberian Branch, Boreskov Inst Catalysis, 5 Prosp Akad Lavrentieva, Novosibirsk 630090, Russia

[4] Southern Illinois Univ, Carbondale, IL 62901 USA

[5] Wayne State Univ, Detroit, MI 48202 USA

[6] Russian Acad Sci, 14 Leninsky Prosp, Moscow 119991, Russia

来源：

RUSSIAN CHEMICAL BULLETIN | 2021年 / 70卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

parahydrogen; parahydrogen-induced polarization; NMR; hyperpolarization; metal complexes; hydrogenation; HYDROGEN-INDUCED POLARIZATION; HETEROGENEOUS HYDROGENATION; MAGNETIC-RESONANCE; CATALYSIS; EFFICIENT; MRI;

D O I：

10.1007/s11172-021-3357-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The parahydrogen-induced polarization technique allows one to significantly enhance the NMR signal. Novel results on the parahydrogen-induced polarization of C-2-C-3 hydrocarbons using metal complexes are presented. Gaseous propane with the nuclear spin polarization level of at least 0.8% can be produced by bubbling parahydrogen through a solution of propylene and a homogeneous hydrogenation catalyst. Hydrogenation of acetylene with parahydrogen over Wilkinson's catalyst can result in the formation of hyperpolarized ethylene. The shape of the NMR lines indicates that this reaction proceeds as a syn-addition of molecular hydrogen. The reactions of several ethylene complexes of rhodium and platinum with parahydrogen were studied. The [Rh(eta(2)-C2H4)(2)Cl](2) complex reacts with parahydrogen to form hyperpolarized ethane, whereas [Pt(eta(2)-C2H4)(PPh3)(2)] converts to the hyperpolarized dihydride complex cis-[Pt(H)(2)(PPh3)(2)].

引用

页码：2382 / 2389

页数：8

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