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1H, (19)F, and (31)P PGSE NMR diffusion studies on chiral organic salts: ion pairing and the dependence of a diffusion value on diastereomeric structure.

作者信息

Martínez-Viviente Eloísa, Pregosin Paul S, Vial Laurent, Herse Christelle, Lacour Jérôme

机构信息

Laboratory of Inorganic Chemistry ETHZ, Hönggerberg, 8093 Zürich, Switzerland.

出版信息

Chemistry. 2004 Jun 21;10(12):2912-8. doi: 10.1002/chem.200305719.

DOI:10.1002/chem.200305719
PMID:15214072
Abstract

1H, (19)F and (31)P pulsed field gradient spin-echo (PGSE) diffusion studies on chiral organic salts that contain hexacoordinate phosphate anions, namely tris(tetrachlorobenzenediolato)phosphate(V) (TRISPHAT) and bis(tetrachlorobenzenediolato)mono([1,1']binaphthalenyl-2,2'diolato)-phosphate(V) (BINPHAT), are reported. The first example of the dependence of a diffusion value on diastereomeric structure is presented. Marked solvent and concentration effects on the diffusion constants (D) of these salts are noted and the question of ion pairing is discussed.

摘要

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