Cation coordination polyhedra lead to multiple lengthscale organization in aqueous electrolytes.
Chem Commun (Camb)
; 59(69): 10400-10403, 2023 Aug 24.
Article
em En
| MEDLINE
| ID: mdl-37551780
ABSTRACT
Understanding multiple lengthscale correlations in the pair distribution functions (PDFs) of aq. electrolytes is a persistent challenge. Here, the coordination chemistry of polyoxoanions supports an ion-network of cation-coordination polyhedra in NaNO3(aq) and NaNO2(aq) that induce long-range solution structure. Oxygen correlations associated with Na+-coordination polyhedra have two characteristics lengthscales; 3.5-5.5 Å and 5.5-7.5 Å, the latter solely associated oligomers. The PDF contraction between 5.5-7.5 Å observed in many electrolytes is attributed to the distinct Oâ¯O correlation found in dimers and dimer subunits within oligomers.
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MEDLINE
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article