Evidence of 29Si NMR paramagnetic shifts in rare-earth zeolite LSX.
Paramagnetic shifts have been observed for the first time in rare-earth zeolites; the 29Si MAS NMR spectra of rare-earth ion-exchanged low silica X show a large range of isotropic chemical shifts that can be attributed to Fermi contact interactions with the lanthanide electronic moments.
Plévert
J
J
Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287-1604, USA. JPlevert@asu.edu
Okubo
T
T
Wada
Y
Y
O'Keeffe
M
M
Tatsumi
T
T