Complexes of light lanthanides with 2,3-dimethoxybenzoic acid
The complexes of light lanthanides with 2,3-dimethoxybenzoic acid of the formula: Ln(C9H9O4)3, where Ln = La(III), Ce(III), Pr(III), Nd(III), Sm(III), Eu(III) and Gd(III) have been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric studies, as well as...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2001-01-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2001/0352-51390108543F.pdf |
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| author | Ferenc Wieslawa Walków-Dziewulska Agnieszka |
| author_facet | Ferenc Wieslawa Walków-Dziewulska Agnieszka |
| author_sort | Ferenc Wieslawa |
| collection | DOAJ |
| description | The complexes of light lanthanides with 2,3-dimethoxybenzoic acid of the
formula: Ln(C9H9O4)3, where Ln = La(III), Ce(III), Pr(III), Nd(III),
Sm(III), Eu(III) and Gd(III) have been synthesized and characterized by
elemental analysis, IR spectroscopy, thermogravimetric studies, as well as
X-ray and magnetic measurements. The complexes have colours typical for Ln3+
ions (La, Ce, Eu, Gd-white, Sm-cream, Pr-green, Nd-violet). The carboxylate
group in these complexes is a bidentate, chelating ligand or a tridentate
chelating and bridging one. They are crystalline compounds characterized by
low symmetry. On heating in air to 1173 K, the 2,3-dimethoxybenzoates of the
light lanthanides decompose in various ways. The complexes of Ce(III),
Pr(III), Sm(III), Eu(III) and Gd(III) decompose directly to oxides of the
respective metals while those of La(III) and Nd(III) via the intermediate
formation of La2O2CO3 and Nd2O2CO3. The solubilities of the
2,3-dimethoxybenzoates of the light lanthanides in water at 293Kare in the
orders of 10-3-10-2 mol dm-3. The magnetic moments were determined in the
range 4.2-298 K and the complexes are found to obey the Curie-Weiss law. |
| first_indexed | 2024-12-19T10:53:29Z |
| format | Article |
| id | doaj.art-b5f4b1363367452d8ee9f15020a3a902 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-19T10:53:29Z |
| publishDate | 2001-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-b5f4b1363367452d8ee9f15020a3a9022022-12-21T20:24:54ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212001-01-0166854355310.2298/JSC0108543F0352-51390108543FComplexes of light lanthanides with 2,3-dimethoxybenzoic acidFerenc Wieslawa0Walków-Dziewulska Agnieszka1Maria Curie-Sklodowska University, Faculty of Chemistry, Lublin, PolandMaria Curie-Sklodowska University, Faculty of Chemistry, Lublin, PolandThe complexes of light lanthanides with 2,3-dimethoxybenzoic acid of the formula: Ln(C9H9O4)3, where Ln = La(III), Ce(III), Pr(III), Nd(III), Sm(III), Eu(III) and Gd(III) have been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric studies, as well as X-ray and magnetic measurements. The complexes have colours typical for Ln3+ ions (La, Ce, Eu, Gd-white, Sm-cream, Pr-green, Nd-violet). The carboxylate group in these complexes is a bidentate, chelating ligand or a tridentate chelating and bridging one. They are crystalline compounds characterized by low symmetry. On heating in air to 1173 K, the 2,3-dimethoxybenzoates of the light lanthanides decompose in various ways. The complexes of Ce(III), Pr(III), Sm(III), Eu(III) and Gd(III) decompose directly to oxides of the respective metals while those of La(III) and Nd(III) via the intermediate formation of La2O2CO3 and Nd2O2CO3. The solubilities of the 2,3-dimethoxybenzoates of the light lanthanides in water at 293Kare in the orders of 10-3-10-2 mol dm-3. The magnetic moments were determined in the range 4.2-298 K and the complexes are found to obey the Curie-Weiss law.http://www.doiserbia.nb.rs/img/doi/0352-5139/2001/0352-51390108543F.pdf2,3-dimethoxybenzoateslight lanthanidesthermal stabilitymagnetic moments |
| spellingShingle | Ferenc Wieslawa Walków-Dziewulska Agnieszka Complexes of light lanthanides with 2,3-dimethoxybenzoic acid Journal of the Serbian Chemical Society 2,3-dimethoxybenzoates light lanthanides thermal stability magnetic moments |
| title | Complexes of light lanthanides with 2,3-dimethoxybenzoic acid |
| title_full | Complexes of light lanthanides with 2,3-dimethoxybenzoic acid |
| title_fullStr | Complexes of light lanthanides with 2,3-dimethoxybenzoic acid |
| title_full_unstemmed | Complexes of light lanthanides with 2,3-dimethoxybenzoic acid |
| title_short | Complexes of light lanthanides with 2,3-dimethoxybenzoic acid |
| title_sort | complexes of light lanthanides with 2 3 dimethoxybenzoic acid |
| topic | 2,3-dimethoxybenzoates light lanthanides thermal stability magnetic moments |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2001/0352-51390108543F.pdf |
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