Abstract
Na3+4, Na5+6, K3+4 and K2+3 ionic clusters in X and Y zeolites have been studied by electron paramagnetic resonance and electron spin-echo modulation. Field-swept two-pulse ESE gives a hyperfine pattern that indicates that the electron spin in the K2+3 cluster is not equally distributed over the nuclei in the cluster. 27Al nuclear modulation has been observed for all the cluster species. Semiquantitative simulation of the 27Al nuclear modulation shows that the average number of aluminium nuclei interacting with the electron spin in these ionic clusters is around 9; the isotropic hyperfine coupling is ca. 0.8–1.1 MHz and the average distance between the unpaired electron and the aluminium nuclei is within 0.30–0.36 nm.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
