In Situ Nuclear Magnetic Resonance Determination of Paramagnetic Susceptibilities of Electrogenerated Species

Mamita E. Sandifer; Ming Zhao; Sunghyun Kim; Daniel Alberto Scherson

doi:10.1021/ac00063a027

In Situ Nuclear Magnetic Resonance Determination of Paramagnetic Susceptibilities of Electrogenerated Species

Mamita E. Sandifer, Ming Zhao, Sunghyun Kim, Daniel Alberto Scherson

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20 Citations (Scopus)

Abstract

A method is herein described for determining in situ the atomic magnetic susceptibility of a metal ion in an electrogenerated complex (corrected by the diamagnetic susceptibility associated with the ligands) in aqueous solutions by monitoring the shift in the (water) proton resonance present as an adventitious impurity in the D ₂ O-based electrolyte. As predicted by Evans formalism, the total shift for mixtures of the diamagnetic [Fe(CN) ₆ ] ^4- and paramagnetic [Fe(CN) ₆ ] ^3- prepared electrochemically in situ was found to be proportional to the concentration of [Fe(CN) ₆ ] ^3- . Furthermore, the magnitude of the molar atomic magnetic susceptibility of the latter species derived from the in situ measurements was found to be in good agreement with values reported in the literature.

Original language	English
Pages (from-to)	2093-2095
Number of pages	3
Journal	Analytical chemistry
Volume	65
Issue number	15
DOIs	https://doi.org/10.1021/ac00063a027
Publication status	Published - 1993 Aug 1
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry

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title = "In Situ Nuclear Magnetic Resonance Determination of Paramagnetic Susceptibilities of Electrogenerated Species",

abstract = " A method is herein described for determining in situ the atomic magnetic susceptibility of a metal ion in an electrogenerated complex (corrected by the diamagnetic susceptibility associated with the ligands) in aqueous solutions by monitoring the shift in the (water) proton resonance present as an adventitious impurity in the D 2 O-based electrolyte. As predicted by Evans formalism, the total shift for mixtures of the diamagnetic [Fe(CN) 6 ] 4- and paramagnetic [Fe(CN) 6 ] 3- prepared electrochemically in situ was found to be proportional to the concentration of [Fe(CN) 6 ] 3- . Furthermore, the magnitude of the molar atomic magnetic susceptibility of the latter species derived from the in situ measurements was found to be in good agreement with values reported in the literature.",

author = "Sandifer, {Mamita E.} and Ming Zhao and Sunghyun Kim and Scherson, {Daniel Alberto}",

year = "1993",

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T1 - In Situ Nuclear Magnetic Resonance Determination of Paramagnetic Susceptibilities of Electrogenerated Species

AU - Sandifer, Mamita E.

AU - Zhao, Ming

AU - Kim, Sunghyun

AU - Scherson, Daniel Alberto

PY - 1993/8/1

Y1 - 1993/8/1

N2 - A method is herein described for determining in situ the atomic magnetic susceptibility of a metal ion in an electrogenerated complex (corrected by the diamagnetic susceptibility associated with the ligands) in aqueous solutions by monitoring the shift in the (water) proton resonance present as an adventitious impurity in the D 2 O-based electrolyte. As predicted by Evans formalism, the total shift for mixtures of the diamagnetic [Fe(CN) 6 ] 4- and paramagnetic [Fe(CN) 6 ] 3- prepared electrochemically in situ was found to be proportional to the concentration of [Fe(CN) 6 ] 3- . Furthermore, the magnitude of the molar atomic magnetic susceptibility of the latter species derived from the in situ measurements was found to be in good agreement with values reported in the literature.

AB - A method is herein described for determining in situ the atomic magnetic susceptibility of a metal ion in an electrogenerated complex (corrected by the diamagnetic susceptibility associated with the ligands) in aqueous solutions by monitoring the shift in the (water) proton resonance present as an adventitious impurity in the D 2 O-based electrolyte. As predicted by Evans formalism, the total shift for mixtures of the diamagnetic [Fe(CN) 6 ] 4- and paramagnetic [Fe(CN) 6 ] 3- prepared electrochemically in situ was found to be proportional to the concentration of [Fe(CN) 6 ] 3- . Furthermore, the magnitude of the molar atomic magnetic susceptibility of the latter species derived from the in situ measurements was found to be in good agreement with values reported in the literature.

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EP - 2095

JO - Analytical chemistry

JF - Analytical chemistry

IS - 15

ER -

In Situ Nuclear Magnetic Resonance Determination of Paramagnetic Susceptibilities of Electrogenerated Species

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