CLOSED-SHELL ION-PAIR AGGREGATION IN NONPOLAR-SOLVENTS CHARACTERIZED BY NMR DIFFUSION MEASUREMENTS

Authors
POCHAPSKY SS MO HP POCHAPSKY TC
Citation
Ss. Pochapsky et al., CLOSED-SHELL ION-PAIR AGGREGATION IN NONPOLAR-SOLVENTS CHARACTERIZED BY NMR DIFFUSION MEASUREMENTS, Journal of the Chemical Society, Chemical Communications, (24), 1995, pp. 2513-2514
Citations number
18
Categorie Soggetti
Chemistry
Journal title
Journal of the Chemical Society, Chemical Communications → ACNP
ISSN journal
00224936
Issue
24
Year of publication
1995
Pages
2513 - 2514
Database
ISI
SICI code
0022-4936(1995):24<2513:CIAINC>2.0.ZU;2-6
Abstract
Closed-shell ion pairs, formed by tetrabutylammonium chloride, aggrega te in (CHCl3)-H-2 solution; stimulated-echo NMR experiments incorporat ing pulsed field gradients yielded diffusion coefficients for the aggr egates and comparison of aggregate diffusion with that of an internal standard of similar size and shape (Bu(4)Si) was used to determine the extent of aggregation; temperature and concentration effects indicate that aggregation is primarily entropy-driven.