Determination of the protonation constants of some substituted salicylideneanilines by the spectrophotometric method in ethanol-water mixtures
Protonation constants of salicylideneaniline and methyl-, ethyl-, methoxy- fluoro-, chloro-, bromo- and iodo- substituted salicylideneanilines were determined by spectrophotomeric titrimetry in 10, 30, 50 and 70% ethanol-water mixtures at constant ionic strength and at $25^\circ C$. The results obta...
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| Veröffentlicht in: | Turkish journal of chemistry 2002, Vol.26 (1), p.37-44 |
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| container_title | Turkish journal of chemistry |
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| creator | CANEL, Esin KILIÇ, Esma AKAY, M. Abdülkadir KÖSEOĞLU, Fitnat |
| description | Protonation constants of salicylideneaniline and methyl-, ethyl-, methoxy- fluoro-, chloro-, bromo- and iodo- substituted salicylideneanilines were determined by spectrophotomeric titrimetry in 10, 30, 50 and 70% ethanol-water mixtures at constant ionic strength and at $25^\circ C$. The results obtained from this work were compared with those obtained using the potentimetric method. The difference between the results found with these two methods was approximately $\pm $0.20 logK units. The spectrophotometric method was judged to be more suitable than the potentiometric method for halogen substituted salicylideneanilines with the low logK values and in the solvent mixture containing 10% ethanol, due to the low solubility of Schiff's bases. |
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Abdülkadir ; KÖSEOĞLU, Fitnat</creator><creatorcontrib>CANEL, Esin ; KILIÇ, Esma ; AKAY, M. Abdülkadir ; KÖSEOĞLU, Fitnat</creatorcontrib><description>Protonation constants of salicylideneaniline and methyl-, ethyl-, methoxy- fluoro-, chloro-, bromo- and iodo- substituted salicylideneanilines were determined by spectrophotomeric titrimetry in 10, 30, 50 and 70% ethanol-water mixtures at constant ionic strength and at $25^\circ C$. The results obtained from this work were compared with those obtained using the potentimetric method. The difference between the results found with these two methods was approximately $\pm $0.20 logK units. The spectrophotometric method was judged to be more suitable than the potentiometric method for halogen substituted salicylideneanilines with the low logK values and in the solvent mixture containing 10% ethanol, due to the low solubility of Schiff's bases.</description><identifier>ISSN: 1300-0527</identifier><identifier>EISSN: 1303-6130</identifier><language>eng</language><publisher>TÜBİTAK</publisher><subject>Analitik Kimya, Ayırma Yöntemleri ; Analytical Chemistry, Separation Methods ; Organic Chemistry ; Organik Kimya ; Potensiyometrik yöntem ; Potentiometric method ; protonation ; Protonlama ; Salicylidene anilines ; Salisiliden anilinler ; Schiff base ; Schiff baz ; spectrophotometry[analysis] ; Spektrofotometri[analiz] ; Titrimetri ; Titrimetry</subject><ispartof>Turkish journal of chemistry, 2002, Vol.26 (1), p.37-44</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,4025</link.rule.ids></links><search><creatorcontrib>CANEL, Esin</creatorcontrib><creatorcontrib>KILIÇ, Esma</creatorcontrib><creatorcontrib>AKAY, M. Abdülkadir</creatorcontrib><creatorcontrib>KÖSEOĞLU, Fitnat</creatorcontrib><title>Determination of the protonation constants of some substituted salicylideneanilines by the spectrophotometric method in ethanol-water mixtures</title><title>Turkish journal of chemistry</title><description>Protonation constants of salicylideneaniline and methyl-, ethyl-, methoxy- fluoro-, chloro-, bromo- and iodo- substituted salicylideneanilines were determined by spectrophotomeric titrimetry in 10, 30, 50 and 70% ethanol-water mixtures at constant ionic strength and at $25^\circ C$. The results obtained from this work were compared with those obtained using the potentimetric method. The difference between the results found with these two methods was approximately $\pm $0.20 logK units. The spectrophotometric method was judged to be more suitable than the potentiometric method for halogen substituted salicylideneanilines with the low logK values and in the solvent mixture containing 10% ethanol, due to the low solubility of Schiff's bases.</description><subject>Analitik Kimya, Ayırma Yöntemleri</subject><subject>Analytical Chemistry, Separation Methods</subject><subject>Organic Chemistry</subject><subject>Organik Kimya</subject><subject>Potensiyometrik yöntem</subject><subject>Potentiometric method</subject><subject>protonation</subject><subject>Protonlama</subject><subject>Salicylidene anilines</subject><subject>Salisiliden anilinler</subject><subject>Schiff base</subject><subject>Schiff baz</subject><subject>spectrophotometry[analysis]</subject><subject>Spektrofotometri[analiz]</subject><subject>Titrimetri</subject><subject>Titrimetry</subject><issn>1300-0527</issn><issn>1303-6130</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNotjd1KxDAQhYsouK6-gRd5gUB-tml6KesvLHiz90uaTmk0TUomRfclfGbjujCcc5jDfHNRrbhkkqqil6fMKKtFc13dIH4wxtsyq-rnETKkyQWTXQwkDiSPQOYUczyvbAyYTcj4V2KcgODSYXZ5ydATNN7Zo3c9BDDBeRcASXc8UXAGm1OcxwKbICdnSbEx9sQFUoIJ0dMvU_6TyX3nJQHeVleD8Qh3Z19X--en_faV7t5f3rYPO4q61RSEYgNs6o22qrNcWtYqUKpXklvRDA2XUg_d0GvesJYbLVU50LWwvdCsZlKuq_t_7OLNZ-emw5zcZNLxIIXWWv4Ce0NiJA</recordid><startdate>2002</startdate><enddate>2002</enddate><creator>CANEL, Esin</creator><creator>KILIÇ, Esma</creator><creator>AKAY, M. Abdülkadir</creator><creator>KÖSEOĞLU, Fitnat</creator><general>TÜBİTAK</general><scope/></search><sort><creationdate>2002</creationdate><title>Determination of the protonation constants of some substituted salicylideneanilines by the spectrophotometric method in ethanol-water mixtures</title><author>CANEL, Esin ; KILIÇ, Esma ; AKAY, M. Abdülkadir ; KÖSEOĞLU, Fitnat</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-s898-e260fe4548c6bc13c096e66d631c27f71338fbfd817091a836260852cd2805033</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Analitik Kimya, Ayırma Yöntemleri</topic><topic>Analytical Chemistry, Separation Methods</topic><topic>Organic Chemistry</topic><topic>Organik Kimya</topic><topic>Potensiyometrik yöntem</topic><topic>Potentiometric method</topic><topic>protonation</topic><topic>Protonlama</topic><topic>Salicylidene anilines</topic><topic>Salisiliden anilinler</topic><topic>Schiff base</topic><topic>Schiff baz</topic><topic>spectrophotometry[analysis]</topic><topic>Spektrofotometri[analiz]</topic><topic>Titrimetri</topic><topic>Titrimetry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>CANEL, Esin</creatorcontrib><creatorcontrib>KILIÇ, Esma</creatorcontrib><creatorcontrib>AKAY, M. Abdülkadir</creatorcontrib><creatorcontrib>KÖSEOĞLU, Fitnat</creatorcontrib><jtitle>Turkish journal of chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>CANEL, Esin</au><au>KILIÇ, Esma</au><au>AKAY, M. Abdülkadir</au><au>KÖSEOĞLU, Fitnat</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determination of the protonation constants of some substituted salicylideneanilines by the spectrophotometric method in ethanol-water mixtures</atitle><jtitle>Turkish journal of chemistry</jtitle><date>2002</date><risdate>2002</risdate><volume>26</volume><issue>1</issue><spage>37</spage><epage>44</epage><pages>37-44</pages><issn>1300-0527</issn><eissn>1303-6130</eissn><abstract>Protonation constants of salicylideneaniline and methyl-, ethyl-, methoxy- fluoro-, chloro-, bromo- and iodo- substituted salicylideneanilines were determined by spectrophotomeric titrimetry in 10, 30, 50 and 70% ethanol-water mixtures at constant ionic strength and at $25^\circ C$. The results obtained from this work were compared with those obtained using the potentimetric method. The difference between the results found with these two methods was approximately $\pm $0.20 logK units. The spectrophotometric method was judged to be more suitable than the potentiometric method for halogen substituted salicylideneanilines with the low logK values and in the solvent mixture containing 10% ethanol, due to the low solubility of Schiff's bases.</abstract><pub>TÜBİTAK</pub><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Turkish journal of chemistry, 2002, Vol.26 (1), p.37-44 |
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| language | eng |
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| source | EZB-FREE-00999 freely available EZB journals; TÜBİTAK Scientific Journals |
| subjects | Analitik Kimya, Ayırma Yöntemleri Analytical Chemistry, Separation Methods Organic Chemistry Organik Kimya Potensiyometrik yöntem Potentiometric method protonation Protonlama Salicylidene anilines Salisiliden anilinler Schiff base Schiff baz spectrophotometry[analysis] Spektrofotometri[analiz] Titrimetri Titrimetry |
| title | Determination of the protonation constants of some substituted salicylideneanilines by the spectrophotometric method in ethanol-water mixtures |
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