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Structure of polyvinylpyrrolidone-iodine (povidone-iodine)

✍ Scribed by Hans-Uwe Schenck; Petr Simak; Erich Haedicke

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
630 KB
Volume
68
Category
Article
ISSN
0022-3549

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✦ Synopsis

Hydrogen triiodide adducts were prepared from N,N-dimethylacetamide, N-alkylpyrrolidone derivatives, and polyvinylpyrrolidone, and their structures were investigated by IR spectra and X-ray structure analyses and compared with the structure of povidone-iodine USP. The results suggest that the iodine in povidone-iodine USP is complexed by the polymer such that a proton is fixed via a short hydrogen bond between two carbonyl groups of two pyrrolidone rings and that a triiodide anion is bound ionically to this cation.

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