Abstract
Density-dependent 33S magnetic shielding has been measured for the first time. For pure gaseous SF6 and its binary mixtures with Xe, CO2 and NH3 at 298 K, an increase in density linearly decreases the 33S shielding constant of SF6. This permits one to separate quantitatively the shielding contributions due to intermolecular interactions and the shielding parameter of an isolated SF6 molecule. Spin−spin coupling in SF6 (1JSF) has also been measured but only for gaseous samples of high densities. It was observed that the 1JSF coupling constant increases for more dense samples and that the increase is even more pronounced in liquid solutions. All of the new results can be used for an improved verification of ab initio calculations of sulfur shielding and spin−spin coupling in the SF6 molecule because the new 33S NMR measurements reveal the magnitudes of appropriate intermolecular effects.
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 callDisclaimer: 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.
