Research output: Contribution to journal › Article › peer-review
New aspects of parahydrogen-induced polarization for C2—C3 hydrocarbons using metal complexes. / Kovtunov, K. V.; Burueva, D. B.; Sviyazov, S. V. et al.
In: Russian Chemical Bulletin, Vol. 70, No. 12, 12.2021, p. 2382-2389.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - New aspects of parahydrogen-induced polarization for C2—C3 hydrocarbons using metal complexes
AU - Kovtunov, K. V.
AU - Burueva, D. B.
AU - Sviyazov, S. V.
AU - Salnikov, O. G.
AU - Goodson, B. M.
AU - Chekmenev, E. Y.
AU - Koptyug, I. V.
N1 - Funding Information: This work was financially supported by the Russian Foundation for Basic Research (Projects No. 19-29-10003 and No. 19-53-12013). Publisher Copyright: © 2021, Springer Science+Business Media LLC.
PY - 2021/12
Y1 - 2021/12
N2 - The parahydrogen-induced polarization technique allows one to significantly enhance the NMR signal. Novel results on the parahydrogen-induced polarization of C2—C3 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(η2-C2H4)2Cl]2 complex reacts with parahydrogen to form hyperpolarized ethane, whereas [Pt(η2-C2H4)(PPh3)2] converts to the hyperpolarized dihydride complex cis-[Pt(H)2(PPh3)2].
AB - The parahydrogen-induced polarization technique allows one to significantly enhance the NMR signal. Novel results on the parahydrogen-induced polarization of C2—C3 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(η2-C2H4)2Cl]2 complex reacts with parahydrogen to form hyperpolarized ethane, whereas [Pt(η2-C2H4)(PPh3)2] converts to the hyperpolarized dihydride complex cis-[Pt(H)2(PPh3)2].
KW - hydrogenation
KW - hyperpolarization
KW - metal complexes
KW - NMR
KW - parahydrogen
KW - parahydrogen-induced polarization
UR - http://www.scopus.com/inward/record.url?scp=85123539466&partnerID=8YFLogxK
U2 - 10.1007/s11172-021-3357-2
DO - 10.1007/s11172-021-3357-2
M3 - Article
AN - SCOPUS:85123539466
VL - 70
SP - 2382
EP - 2389
JO - Russian Chemical Bulletin
JF - Russian Chemical Bulletin
SN - 1066-5285
IS - 12
ER -
ID: 35385571