Anisotropic nuclear spin interactions in H2O@C60 determined by solid-state NMR.
Philos Trans A Math Phys Eng Sci
; 371(1998): 20120102, 2013 Sep 13.
Article
de En
| MEDLINE
| ID: mdl-23918716
ABSTRACT
We report a solid-state NMR study of the anisotropic nuclear spin interactions in H2O@C60 at room temperature. We find evidence of significant dipole-dipole interactions between the water protons, and also a proton chemical shift anisotropy (CSA) interaction. The principal axes of these interaction tensors are found to be perpendicular. The magnitude of the CSA is too large to be explained by a model in which the water molecules are partially aligned with respect to an external axis. The evidence indicates that the observed CSA is caused by a distortion of the geometry or electronic structure of the fullerene cages, in response to the presence of the endohedral water.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
Philos Trans A Math Phys Eng Sci
Sujet du journal:
BIOFISICA
/
ENGENHARIA BIOMEDICA
Année:
2013
Type de document:
Article
Pays d'affiliation:
Royaume-Uni