Thermodynamic study of solvent extraction of 15-crown-5- and 18-crown-6-s-block metal ion complexes and tetraalkylammonium ions with picrate anions into chloroform
Enthalpy and entropy changes for ion-pair extractions of tetraalkylammonium ions (R 4N +) with picrate anions, overall extractions of s-block metal picrates with 15-crown-5 (15C5) and 18-crown-6 (18C6) and the partition of 15C5 itself were determined between chloroform and water. The distribution be...
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| Veröffentlicht in: | Talanta (Oxford) 1991-11, Vol.38 (11), p.1325-1333 |
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| creator | Takeda, Yasuyuki Ikeo, Nobuyuki Sakata, Noriko |
| description | Enthalpy and entropy changes for ion-pair extractions of tetraalkylammonium ions (R
4N
+) with picrate anions, overall extractions of s-block metal picrates with 15-crown-5 (15C5) and 18-crown-6 (18C6) and the partition of 15C5 itself were determined between chloroform and water. The distribution behaviour of crown ethers and the extraction process of s-block metal picrates with the crown ethers are discussed in detail on molecular grounds from the thermodynamic point of view. Moreover, enthalpy and entropy changes for ion-pair extractions of 1:1 15C5- and 18C6-s-block metal ion complexes with picrate anions are calculated from these experimental thermodynamic parameters and the literature values for complex-formation reactions of the crown ethers with the s-block metal ions in water. Enthalpy and entropy changes are negative for overall extractions of all the s-block metal picrates with 15C5 and 18C6. The extractions of the metal picrates with 15C5 and 18C6 at 25° are completely enthalpy driven. Plots of thermodynamic parameters for ion-pair extractions of R
4NA
vs. the number of carbon atoms of R
4N
+ show a linear relationship. From these experimental data, contributions of a methylene group and an ether oxygen atom to the thermodynamic parameters of the ion-pair extraction of R
4NA and the partition of the crown ethers, respectively, between chloroform and water were obtained. Enthalpy and entropy changes for ion-pair extractions of 15C5- and 18C6-s-block metal picrate complexes were compared with those of R
4NA. A striking difference in the ion-pair extraction process was found between the crown ether complexes and R
4NA. |
| doi_str_mv | 10.1016/0039-9140(91)80113-E |
| format | Article |
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4N
+) with picrate anions, overall extractions of s-block metal picrates with 15-crown-5 (15C5) and 18-crown-6 (18C6) and the partition of 15C5 itself were determined between chloroform and water. The distribution behaviour of crown ethers and the extraction process of s-block metal picrates with the crown ethers are discussed in detail on molecular grounds from the thermodynamic point of view. Moreover, enthalpy and entropy changes for ion-pair extractions of 1:1 15C5- and 18C6-s-block metal ion complexes with picrate anions are calculated from these experimental thermodynamic parameters and the literature values for complex-formation reactions of the crown ethers with the s-block metal ions in water. Enthalpy and entropy changes are negative for overall extractions of all the s-block metal picrates with 15C5 and 18C6. The extractions of the metal picrates with 15C5 and 18C6 at 25° are completely enthalpy driven. Plots of thermodynamic parameters for ion-pair extractions of R
4NA
vs. the number of carbon atoms of R
4N
+ show a linear relationship. From these experimental data, contributions of a methylene group and an ether oxygen atom to the thermodynamic parameters of the ion-pair extraction of R
4NA and the partition of the crown ethers, respectively, between chloroform and water were obtained. Enthalpy and entropy changes for ion-pair extractions of 15C5- and 18C6-s-block metal picrate complexes were compared with those of R
4NA. A striking difference in the ion-pair extraction process was found between the crown ether complexes and R
4NA.</description><identifier>ISSN: 0039-9140</identifier><identifier>EISSN: 1873-3573</identifier><identifier>DOI: 10.1016/0039-9140(91)80113-E</identifier><identifier>PMID: 18965305</identifier><identifier>CODEN: TLNTA2</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Chemistry ; Exact sciences and technology ; Inorganic chemistry and origins of life ; Kinetics and mechanism of reactions</subject><ispartof>Talanta (Oxford), 1991-11, Vol.38 (11), p.1325-1333</ispartof><rights>1991</rights><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c303t-9ce3f561148fbbb90a3f39dbda9c0eca15f5d568fa4fcdb4c12f4c86da80bc983</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0039-9140(91)80113-E$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3541,27915,27916,45986</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5179336$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18965305$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Takeda, Yasuyuki</creatorcontrib><creatorcontrib>Ikeo, Nobuyuki</creatorcontrib><creatorcontrib>Sakata, Noriko</creatorcontrib><title>Thermodynamic study of solvent extraction of 15-crown-5- and 18-crown-6-s-block metal ion complexes and tetraalkylammonium ions with picrate anions into chloroform</title><title>Talanta (Oxford)</title><addtitle>Talanta</addtitle><description>Enthalpy and entropy changes for ion-pair extractions of tetraalkylammonium ions (R
4N
+) with picrate anions, overall extractions of s-block metal picrates with 15-crown-5 (15C5) and 18-crown-6 (18C6) and the partition of 15C5 itself were determined between chloroform and water. The distribution behaviour of crown ethers and the extraction process of s-block metal picrates with the crown ethers are discussed in detail on molecular grounds from the thermodynamic point of view. Moreover, enthalpy and entropy changes for ion-pair extractions of 1:1 15C5- and 18C6-s-block metal ion complexes with picrate anions are calculated from these experimental thermodynamic parameters and the literature values for complex-formation reactions of the crown ethers with the s-block metal ions in water. Enthalpy and entropy changes are negative for overall extractions of all the s-block metal picrates with 15C5 and 18C6. The extractions of the metal picrates with 15C5 and 18C6 at 25° are completely enthalpy driven. Plots of thermodynamic parameters for ion-pair extractions of R
4NA
vs. the number of carbon atoms of R
4N
+ show a linear relationship. From these experimental data, contributions of a methylene group and an ether oxygen atom to the thermodynamic parameters of the ion-pair extraction of R
4NA and the partition of the crown ethers, respectively, between chloroform and water were obtained. Enthalpy and entropy changes for ion-pair extractions of 15C5- and 18C6-s-block metal picrate complexes were compared with those of R
4NA. A striking difference in the ion-pair extraction process was found between the crown ether complexes and R
4NA.</description><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>Inorganic chemistry and origins of life</subject><subject>Kinetics and mechanism of reactions</subject><issn>0039-9140</issn><issn>1873-3573</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNp90c1uGyEQAOBV1apx075BVXGo1PZAC2ZZs5dIVeT-SJF6Sc-IHQaZBhYXcBI_T140u7aV3noBMfoGmJmmecvZZ85494Ux0dOet-xjzz8pxrmg62fNgquVoEKuxPNm8UTOmlel_GGMLQUTL5szrvpOCiYXzcP1BnNMdj-a6IGUurN7khwpKdziWAne12yg-jTOUS4p5HQ3UkmJGS3h6nTuaKFDSHBDIlYTyOwhxW3AeywHWnG6yISbfTAxptHv4owKufN1Q7Yesqk4wUPMjzUR2ISUk0s5vm5eOBMKvjnt583vb-vryx_06tf3n5dfryhMVVXaAwonO85b5YZh6JkRTvR2sKYHhmC4dNLKTjnTOrBDC3zpWlCdNYoN0Ctx3nw43rvN6e8OS9XRF8AQzIhpV_RKCLVUSykm2R7lVH0pGZ3eZh9N3mvO9DwdPbdez62fFn2Yjl5Pae9OD-yGiPZf0mkcE3h_AqaACS6bEXx5cpKveiG6iV0cGU7duPWYdQGPI6D1GaFqm_z_P_IIbfqvSQ</recordid><startdate>199111</startdate><enddate>199111</enddate><creator>Takeda, Yasuyuki</creator><creator>Ikeo, Nobuyuki</creator><creator>Sakata, Noriko</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>199111</creationdate><title>Thermodynamic study of solvent extraction of 15-crown-5- and 18-crown-6-s-block metal ion complexes and tetraalkylammonium ions with picrate anions into chloroform</title><author>Takeda, Yasuyuki ; Ikeo, Nobuyuki ; Sakata, Noriko</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c303t-9ce3f561148fbbb90a3f39dbda9c0eca15f5d568fa4fcdb4c12f4c86da80bc983</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>Inorganic chemistry and origins of life</topic><topic>Kinetics and mechanism of reactions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Takeda, Yasuyuki</creatorcontrib><creatorcontrib>Ikeo, Nobuyuki</creatorcontrib><creatorcontrib>Sakata, Noriko</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Talanta (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Takeda, Yasuyuki</au><au>Ikeo, Nobuyuki</au><au>Sakata, Noriko</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermodynamic study of solvent extraction of 15-crown-5- and 18-crown-6-s-block metal ion complexes and tetraalkylammonium ions with picrate anions into chloroform</atitle><jtitle>Talanta (Oxford)</jtitle><addtitle>Talanta</addtitle><date>1991-11</date><risdate>1991</risdate><volume>38</volume><issue>11</issue><spage>1325</spage><epage>1333</epage><pages>1325-1333</pages><issn>0039-9140</issn><eissn>1873-3573</eissn><coden>TLNTA2</coden><abstract>Enthalpy and entropy changes for ion-pair extractions of tetraalkylammonium ions (R
4N
+) with picrate anions, overall extractions of s-block metal picrates with 15-crown-5 (15C5) and 18-crown-6 (18C6) and the partition of 15C5 itself were determined between chloroform and water. The distribution behaviour of crown ethers and the extraction process of s-block metal picrates with the crown ethers are discussed in detail on molecular grounds from the thermodynamic point of view. Moreover, enthalpy and entropy changes for ion-pair extractions of 1:1 15C5- and 18C6-s-block metal ion complexes with picrate anions are calculated from these experimental thermodynamic parameters and the literature values for complex-formation reactions of the crown ethers with the s-block metal ions in water. Enthalpy and entropy changes are negative for overall extractions of all the s-block metal picrates with 15C5 and 18C6. The extractions of the metal picrates with 15C5 and 18C6 at 25° are completely enthalpy driven. Plots of thermodynamic parameters for ion-pair extractions of R
4NA
vs. the number of carbon atoms of R
4N
+ show a linear relationship. From these experimental data, contributions of a methylene group and an ether oxygen atom to the thermodynamic parameters of the ion-pair extraction of R
4NA and the partition of the crown ethers, respectively, between chloroform and water were obtained. Enthalpy and entropy changes for ion-pair extractions of 15C5- and 18C6-s-block metal picrate complexes were compared with those of R
4NA. A striking difference in the ion-pair extraction process was found between the crown ether complexes and R
4NA.</abstract><cop>Amsterdam</cop><cop>Oxford</cop><pub>Elsevier B.V</pub><pmid>18965305</pmid><doi>10.1016/0039-9140(91)80113-E</doi><tpages>9</tpages></addata></record> |
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| issn | 0039-9140 1873-3573 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_733828253 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Chemistry Exact sciences and technology Inorganic chemistry and origins of life Kinetics and mechanism of reactions |
| title | Thermodynamic study of solvent extraction of 15-crown-5- and 18-crown-6-s-block metal ion complexes and tetraalkylammonium ions with picrate anions into chloroform |
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