Hydrogen gas formation from the photolysis of rhenium hydrides - mechanistic and computational studies
The photolysis of 4,4′-disubstituted, 2,2′-bipyridine fac -Re(bpy)(CO) 3 H derivatives produces stoichiometric H 2 gas. The rate of production varies greatly depending on the electronic nature of the disubstituted bipyridine (bpy) with halogenated substituents increasing the rate. Isotope labeling s...
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Published in | Dalton transactions : an international journal of inorganic chemistry Vol. 48; no. 43; pp. 16148 - 16152 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Cambridge
Royal Society of Chemistry
21.11.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The photolysis of 4,4′-disubstituted, 2,2′-bipyridine
fac
-Re(bpy)(CO)
3
H derivatives produces stoichiometric H
2
gas. The rate of production varies greatly depending on the electronic nature of the disubstituted bipyridine (bpy) with halogenated substituents increasing the rate. Isotope labeling studies along with B3LYP geometry optimization DFT modeling studies indicate a mechanism involving a Re-H-Re bridging complex that leads to a dimeric Re-Re(η
2
-H
2
) state prior to dissociating H
2
gas.
The photolysis of
fac
-Re(bpy)(CO)
3
H derivatives produce stoichiometric H
2
gas. Isotope labeling and computational studies indicate a mechanism involving a Re-H-Re bridging complex that leads to a dimeric Re-Re(η
2
-H
2
) state prior to dissociating H
2
. |
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Bibliography: | 10.1039/C9DT03364E In memory of Pat Sullivan. Electronic supplementary information (ESI) available. See DOI ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/c9dt03364e |