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Electrochemistry and analytical application of the tin(IV) complex of N-benzoyl-N-phenylhydroxamic acid in 2-propanol solution

✍ Scribed by Ina Helms; Antje Pietsch; Fritz Scholz

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 593 KB
Volume: 7
Category: Article
ISSN: 1040-0397
DOI: 10.1002/elan.1140070306

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✦ Synopsis

The tin@) complex of N-benzoyl-N-phenyl-hydroxamic acid (HX) and chloride ions [Sn'"X2CI,Jo is reduced in 2-propanol solution via two different pathways depending on the scan rate. At scan rates higher than 20mV/s, the reduction proceeds via [Sn"X2CI2J2-and [SnoX(H20)J, and at slower scan rates the reduction proceeds via [Sn"XC13]2-and [Sn°CI(H20)2]-. This is the first time that experiments have indicated the existence of tin' complexes. The studied tin'" complex can be used for the determination of tin traces in aqueous solutions. Therefore the tinIv complex is preliminarily extracted from aqueous solution and the differential pulse anodic stripping voltammograms are recorded in the organic solution after addition of 2-propanol. The 3 0 limit of detection is 4 x

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