Mechanism of polarographic reduction of germanium(IV) in acidic catechol medium

R. G. Canham; D. A. Aikens; Nicholas Winograd; Glenn Mazepa

doi:10.1021/j100700a020

Mechanism of polarographic reduction of germanium(IV) in acidic catechol medium

R. G. Canham, D. A. Aikens, Nicholas Winograd, Glenn Mazepa

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Abstract

The mechanisms of the preelectrochemical reactions involved in electrodeposition of Ge(IV) from acidic catechol have been studied by means of Koutecky's analysis of the limiting current. Dissociation of the triscatechol complex and reaction of Ge(OH)₄ with one or two catechol moieties have been identified as the important preelectrochemical steps. The electroactive complexes are the mixed catechol-hydroxy complexes Ge(OH)₂L, Ge(OH)₂L₂, and possibly GeOHL. Adsorption of the electroactive species precedes electroreduction, but electron bridging does not seem to be important. It is postulated that a trans effect in the mixed complexes facilitates deposition by increasing the ease of release of the coordination sphere.

Original language	English (US)
Pages (from-to)	1082-1087
Number of pages	6
Journal	Journal of Physical Chemistry
Volume	74
Issue number	5
DOIs	https://doi.org/10.1021/j100700a020
State	Published - Jan 1 1970

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General Engineering
Physical and Theoretical Chemistry

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title = "Mechanism of polarographic reduction of germanium(IV) in acidic catechol medium",

abstract = "The mechanisms of the preelectrochemical reactions involved in electrodeposition of Ge(IV) from acidic catechol have been studied by means of Koutecky's analysis of the limiting current. Dissociation of the triscatechol complex and reaction of Ge(OH)4 with one or two catechol moieties have been identified as the important preelectrochemical steps. The electroactive complexes are the mixed catechol-hydroxy complexes Ge(OH)2L, Ge(OH)2L2, and possibly GeOHL. Adsorption of the electroactive species precedes electroreduction, but electron bridging does not seem to be important. It is postulated that a trans effect in the mixed complexes facilitates deposition by increasing the ease of release of the coordination sphere.",

author = "Canham, {R. G.} and Aikens, {D. A.} and Nicholas Winograd and Glenn Mazepa",

year = "1970",

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T1 - Mechanism of polarographic reduction of germanium(IV) in acidic catechol medium

AU - Canham, R. G.

AU - Aikens, D. A.

AU - Winograd, Nicholas

AU - Mazepa, Glenn

PY - 1970/1/1

Y1 - 1970/1/1

N2 - The mechanisms of the preelectrochemical reactions involved in electrodeposition of Ge(IV) from acidic catechol have been studied by means of Koutecky's analysis of the limiting current. Dissociation of the triscatechol complex and reaction of Ge(OH)4 with one or two catechol moieties have been identified as the important preelectrochemical steps. The electroactive complexes are the mixed catechol-hydroxy complexes Ge(OH)2L, Ge(OH)2L2, and possibly GeOHL. Adsorption of the electroactive species precedes electroreduction, but electron bridging does not seem to be important. It is postulated that a trans effect in the mixed complexes facilitates deposition by increasing the ease of release of the coordination sphere.

AB - The mechanisms of the preelectrochemical reactions involved in electrodeposition of Ge(IV) from acidic catechol have been studied by means of Koutecky's analysis of the limiting current. Dissociation of the triscatechol complex and reaction of Ge(OH)4 with one or two catechol moieties have been identified as the important preelectrochemical steps. The electroactive complexes are the mixed catechol-hydroxy complexes Ge(OH)2L, Ge(OH)2L2, and possibly GeOHL. Adsorption of the electroactive species precedes electroreduction, but electron bridging does not seem to be important. It is postulated that a trans effect in the mixed complexes facilitates deposition by increasing the ease of release of the coordination sphere.

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JO - Journal of Physical Chemistry

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Mechanism of polarographic reduction of germanium(IV) in acidic catechol medium

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