Nuclear relaxation of H2 and H2@C60 in organic solvents

Elena Sartori; Marco Ruzzi; Nicholas J Turro; John D Decatur; David C Doetschman; Ronald G Lawler; Anatoly L Buchachenko; Yasujiro Murata; Koichi Komatsu

doi:10.1021/ja065172w

Nuclear relaxation of H2 and H2@C60 in organic solvents

J Am Chem Soc. 2006 Nov 22;128(46):14752-3. doi: 10.1021/ja065172w.

Authors

Elena Sartori¹, Marco Ruzzi, Nicholas J Turro, John D Decatur, David C Doetschman, Ronald G Lawler, Anatoly L Buchachenko, Yasujiro Murata, Koichi Komatsu

Affiliation

¹ Department of Chemistry, Columbia University, New York, NY 10027, USA.

PMID: 17105254
DOI: 10.1021/ja065172w

Abstract

The 1H nuclear spin-lattice relaxation time (T1) of H2 and H2@C60 in organic solvents varies with solvent, and it varies proportionally for H2 and for H2@C60. Since intermolecular magnetic interactions are ruled out, the solvent must influence the modulating processes of the relaxation mechanisms of H2 both in the solvent cage and inside C60. The temperature dependence of T1 also is very similar for H2 and H2@C60, T1 going through a maximum by varying the temperature in solvents which allow a wide range of temperatures to be explored. This behavior is attributed to the presence of dipolar and spin-rotation mechanisms which have an opposite dependence on temperature.