Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 12, Pages 4042-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja910282p
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Funding
- National Science Foundation [CHE 07-17518]
- Grants-in-Aid for Scientific Research [22750039, 20108003] Funding Source: KAKEN
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The interconversion of ortho-hydrogen (oH(2)) and para-hydrogen (pH(2)), the two nuclear spin isomers of dihydrogen, requires a paramagnetic spin catalyst such as a nitroxide. We report the design and demonstration of spin catalysis of the interconversion of oH(2) and pH(2) incarcerated in an endofullerene based on a reversible nitroxide/hydroxylamine system. The system is an example of a reversible magnetic spin catalysis switch that can increase the rate of interconversion of the nuclear spin isomers of H-2 by a factor of -10(4).
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