A magnetic switch for spin-catalyzed interconversion of nuclear spin isomers.
نویسندگان
چکیده
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 approximately 10(4).
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ورودعنوان ژورنال:
- Journal of the American Chemical Society
دوره 132 12 شماره
صفحات -
تاریخ انتشار 2010