IR-spectral study of photoinduced tautomerization in 1,3-diphenyl-pyrazol-5-one
The UV-photoinduced prototropic isomerization of 1,3-diphenyl pyrazol-5-one (DPhP) embedded in polyvinyl chloride (PVC) film is studied by means of difference in IR spectral analysis. The initially existing CH-form in non-irradiated compound is transformed to NH-form, and a hydrochloride salt is sta...
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Veröffentlicht in: | Open Chemistry 2003-12, Vol.1 (4), p.356-365 |
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creator | Ivanova, Bojidarka Tchapkanov, Atanas Arnaudov, Michail Petkov, Ivan |
description | The UV-photoinduced prototropic isomerization of 1,3-diphenyl pyrazol-5-one (DPhP) embedded in polyvinyl chloride (PVC) film is studied by means of difference in IR spectral analysis. The initially existing CH-form in non-irradiated compound is transformed to NH-form, and a hydrochloride salt is stabilized because of the photodegradation of the PVC. An additional comparative IR spectral study of DPhP in different solutions as well as of its hydrochloride salts in solid state is also carried out. |
doi_str_mv | 10.2478/BF02475222 |
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An additional comparative IR spectral study of DPhP in different solutions as well as of its hydrochloride salts in solid state is also carried out.</description><subject>1,3-diphenyl pyrazol-5-one</subject><subject>IR-spectral study</subject><subject>Polymer film</subject><subject>Tautomerization</subject><subject>UV light irradiation</subject><issn>2391-5420</issn><issn>2391-5420</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNptkE1Lw0AYhBdRsNRe_AU5i6v7vclRi9VCoSB6DpvsuzYlzYbdDZL-eiMV9OBp5jAzPAxC15TcMaHz-8cVmVQyxs7QjPGCYikYOf_jL9Eixj0hhEquC81naLt-xbGHOgXTZjENdsy8y_qdT77p7FCDzZIZkj9AaI4mNb7Lmi6jtxzbpt9BN7a4H4M5-hZL7Du4QhfOtBEWPzpH76unt-UL3myf18uHDa4ZEQkXwiqngE-8igABnkOhAGpVV1YoY2hlJUyQTOvcaEu5doQomVPqCqbyis_RzWm3Dj7GAK7sQ3MwYSwpKb_fKH_fmML6FP40bYJg4SMM42TKvR9CN2H-U6KCS8W_AEbPYuM</recordid><startdate>20031201</startdate><enddate>20031201</enddate><creator>Ivanova, Bojidarka</creator><creator>Tchapkanov, Atanas</creator><creator>Arnaudov, Michail</creator><creator>Petkov, Ivan</creator><general>Versita</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20031201</creationdate><title>IR-spectral study of photoinduced tautomerization in 1,3-diphenyl-pyrazol-5-one</title><author>Ivanova, Bojidarka ; Tchapkanov, Atanas ; Arnaudov, Michail ; Petkov, Ivan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c204t-94d6f6e324760e0e38e96eec6cbd46aa1bd5e1532778a7d137f0065811f9268b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>1,3-diphenyl pyrazol-5-one</topic><topic>IR-spectral study</topic><topic>Polymer film</topic><topic>Tautomerization</topic><topic>UV light irradiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ivanova, Bojidarka</creatorcontrib><creatorcontrib>Tchapkanov, Atanas</creatorcontrib><creatorcontrib>Arnaudov, Michail</creatorcontrib><creatorcontrib>Petkov, Ivan</creatorcontrib><collection>CrossRef</collection><jtitle>Open Chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ivanova, Bojidarka</au><au>Tchapkanov, Atanas</au><au>Arnaudov, Michail</au><au>Petkov, Ivan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>IR-spectral study of photoinduced tautomerization in 1,3-diphenyl-pyrazol-5-one</atitle><jtitle>Open Chemistry</jtitle><date>2003-12-01</date><risdate>2003</risdate><volume>1</volume><issue>4</issue><spage>356</spage><epage>365</epage><pages>356-365</pages><issn>2391-5420</issn><eissn>2391-5420</eissn><abstract>The UV-photoinduced prototropic isomerization of 1,3-diphenyl pyrazol-5-one (DPhP) embedded in polyvinyl chloride (PVC) film is studied by means of difference in IR spectral analysis. The initially existing CH-form in non-irradiated compound is transformed to NH-form, and a hydrochloride salt is stabilized because of the photodegradation of the PVC. An additional comparative IR spectral study of DPhP in different solutions as well as of its hydrochloride salts in solid state is also carried out.</abstract><pub>Versita</pub><doi>10.2478/BF02475222</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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subjects | 1,3-diphenyl pyrazol-5-one IR-spectral study Polymer film Tautomerization UV light irradiation |
title | IR-spectral study of photoinduced tautomerization in 1,3-diphenyl-pyrazol-5-one |
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