W. Fujita et K. Awaga, PREPARATION AND MAGNETIC-PROPERTIES OF SAPONITE CLAYS INTERCALATED WITH STABLE ORGANIC RADICALS, Journal of the Chemical Society, Chemical Communications, (7), 1995, pp. 739-740
The organic radical cations, 2-(3- and 4,4,5,5-tetramethyl-4,5-dihydro
-1H-imidazol-1-oxyl 3-N-oxidel are intercalated into saponite clay {Na
-0.46[Si3.54Al0.46Mg3O10(OH)(2)].nH(2)O} by means of cation exchange,
and display Curie paramagnetic behaviour in the interlayers.