Spectroscopic studies of ionic solvation—XIII. Sodium-23 nuclear magnetic resonance in mixed solvents

Erlich, Ronald H.; Greenberg, Mark S.; Popov, Alexander I.

doi:10.1016/0584-8539(73)80035-2

Cited by 42 publications

(10 citation statements)

References 16 publications

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“…line width method that the chemical since the 1965 paper of Frankel, Stengle, and shift of the central atom of a sylnmetrical comLangford (I), which showed by cross reference plex be used to probe the intimate solvation environment of a solute species, several of alkali nietals (2)(3)(4) and halides (4)(5)(6). EspeCan.…”

Section: Introductionmentioning

confidence: 99%

Nuclear Magnetic Resonance Studies of Solvation of Halides: ¹⁹F Studies of Solvent and Counterion Effects on Chemical Shift

Tong¹,

Langford²,

Stengle³

1974

Can. J. Chem.

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W e report new measurements adding to the literature o n solvent and counter ion dependence of ' OF-chemical shift. These are compared to earlier r e s~~l t s for "'CI-, "'Br-, anel "'I-. The observations support the following points: ( 1 ) there a r e few systematic differences between behavior of anion shifts in dilute and nioclerately concentrated aqueous solution, ( 2 ) anion shifts c o n~n~o n l y show larger sensitivity to solvent than counter ion over convenient ranges of variation so that "solvent shift" may be easily measurecl. Using the concept of collision effects on shifts cleveloped by Richards and his collaborators, it is possible to separate, in many cases, the large effects arising f r o m contact, or primary solvation sphere, collisions from the smaller effects of outer sphere interactions.W e find no preferential solvation of F-by H.0 in mixtures with CH:,OH; at most, small preferecce over CI.H,OH and formamide, and a small opposite preference in favor of diols. However, water appears strongly preferred in the primary solvation shell over acetone, acetonitrile, dioxane, and (in contrast t o other ha!ides), clin~ethylsulfoxicle. Solvation by amines involving both outer and inner sphere site occupation is considered.T h e inter-anion effects on fluoride ion chemical shifts tend to undermine the concept of additivity of ionic effects o n shifts.

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Section: Introductionmentioning

confidence: 99%

Nuclear Magnetic Resonance Studies of Solvation of Halides: ¹⁹F Studies of Solvent and Counterion Effects on Chemical Shift

Tong¹,

Langford²,

Stengle³

1974

Can. J. Chem.

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“…A similar problem exists in defining the donicity of structbred aprotic solvents such as dirnethyl snlfoxide. Thus, Erlich et al (26) have observed that dimethyl sulfoxide is a better base in pyridine solutions than as a pure solvent. However, the magnitude of the structure effect is probably less than that for protic solvents.…”

Section: Resultsmentioning

confidence: 99%

A characteristic vector analysis of solvent effects for thermodynamic data

Fawcett¹,

Krygowski²

1976

Can. J. Chem.

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W. RONALD FAWCETT and T. MAREK KRYGOWSKI. Can. J. Chem. 54,3283 (1976) Characteristic vector analysis has been performed on six sets of thermodynamic data relating to the solvation of electrolytes, polar molecules, and single ions in pure solvents. The analysis shows that variation in a given thermodynamic property with nature of the solvent can be accounted for with two characteristic vectors and that these vectors are linearly related to empirical measures of solvent basicity and acidity. The results confirm that an empirical relation proposed earlier by the present authors can be used to describe solvation effects with the limitation that the basicity of strongly structured protic solvents is difficult to describe quantitatively.W. RONALD FAWCETT et T. MAREK KRYGOWSKI. Can. J. Chem. 54, 3283 (1976).L'analyse du vecteur caracteristique a etk effectute sur six series de donnees thermodynamiques en relation avec la solvatation des electrolytes, des molecules polaires et des ions isoles dans des solvants purs. L'analyse montre que les variations dans une propriete thermodynamique donnee avec la nature du solvant pouvent Etre expliquees a !'aide de d e w vecteurs caracteristiques et que ces vecteurs sont lineairement relies a des mesures empiriques de basicite et d'acidite du solvant. Les rksultats confirment que la relation empirique deja proposte par les presents auteurs peut itre utiliske pour decrire les effets de solvatation avec la restriction que la basicite des solvants protiques fortement structures est difficile a decrire quantitativement.[Traduit par le journal]

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“…Tetramethylsilane was used as the external standard for obtaining 1 H spectra, and the standard for 23 Na spectra was a saturated sodium chloride solution. [21,22] The 23 Na NMR spectra were recorded using single-pulse acquisition at 10-ls pulse width and 5-s relaxation delay for a given number of acquisitions.…”

Section: Measurementsmentioning

confidence: 99%

Non-Covalent Adducts of Sodium Poly(α,L-glutamate) with Poly(N-vinyl pyrrolidone): Methods of Preparation and Characterization of Structure

Pemawansa

Khan²

2002

Macromol. Biosci.

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Spectroscopic studies of ionic solvation—XIII. Sodium-23 nuclear magnetic resonance in mixed solvents

Cited by 42 publications

References 16 publications

Nuclear Magnetic Resonance Studies of Solvation of Halides: ¹⁹F Studies of Solvent and Counterion Effects on Chemical Shift

Nuclear Magnetic Resonance Studies of Solvation of Halides: ¹⁹F Studies of Solvent and Counterion Effects on Chemical Shift

A characteristic vector analysis of solvent effects for thermodynamic data

Non-Covalent Adducts of Sodium Poly(α,L-glutamate) with Poly(N-vinyl pyrrolidone): Methods of Preparation and Characterization of Structure

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Spectroscopic studies of ionic solvation—XIII. Sodium-23 nuclear magnetic resonance in mixed solvents

Cited by 42 publications

References 16 publications

Nuclear Magnetic Resonance Studies of Solvation of Halides: 19F Studies of Solvent and Counterion Effects on Chemical Shift

Nuclear Magnetic Resonance Studies of Solvation of Halides: 19F Studies of Solvent and Counterion Effects on Chemical Shift

A characteristic vector analysis of solvent effects for thermodynamic data

Non-Covalent Adducts of Sodium Poly(α,L-glutamate) with Poly(N-vinyl pyrrolidone): Methods of Preparation and Characterization of Structure

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Nuclear Magnetic Resonance Studies of Solvation of Halides: ¹⁹F Studies of Solvent and Counterion Effects on Chemical Shift

Nuclear Magnetic Resonance Studies of Solvation of Halides: ¹⁹F Studies of Solvent and Counterion Effects on Chemical Shift