13-P-11-Correlation between 11B NMR isotropic chemical shifts and structural parameters in borates and boro-silicates

Autor:	F. Fajula, J. Plévert, F. Di Renzo
Rok vydání:	2001
Předmět:	Chemistry Chemical shift Isotropy Analytical chemistry Resonance chemistry.chemical_element BORO Condensed Matter::Materials Science Solid-state nuclear magnetic resonance Physics::Atomic and Molecular Clusters Magic angle spinning Tetrahedron Physical chemistry Boron
DOI:	10.1016/s0167-2991(01)81790-0
Popis:	Publisher Summary This chapter presents correlation between boron ( 11 B) nuclear magnetic resonance (NMR) isotropic chemical shifts and structural parameters in borates and borosilicates. 11 B magic angle spinning nuclear magnetic resonance (MAS NMR) has been performed for a variety of borates and borosilicates. Boron atoms in tetrahedral coordination exhibit sharp resonance lines. The 11 B isotropic chemical shift displays dependence as a function of framework geometry parameters, such as the mean angles and the mean distances BT . Such correlation can be useful to characterize the boron site in disordered zeolites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8ac2f785353b423f404d3ac5a7fef467 https://doi.org/10.1016/s0167-2991(01)81790-0 Zobrazit plný text záznamu