THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE
The paper is devoted to the interaction of copper(II) chloride with water soluble β-furfuraldoxime (N-(furan-2-ylmethyliden)hydroxylamine) in hydrochloric solutions. It was been revealed that the degree of copper(II) precipitation from aqueous solutions and hydrochloric solutions with the pH of 4 M...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
MIREA - Russian Technological University
2016-04-01
|
| Series: | Тонкие химические технологии |
| Subjects: | |
| Online Access: | https://www.finechem-mirea.ru/jour/article/view/18 |
| _version_ | 1797882075876950016 |
|---|---|
| author | E. V. Volchkova T. M. Buslaeva I. E. Safronova |
| author_facet | E. V. Volchkova T. M. Buslaeva I. E. Safronova |
| author_sort | E. V. Volchkova |
| collection | DOAJ |
| description | The paper is devoted to the interaction of copper(II) chloride with water soluble β-furfuraldoxime (N-(furan-2-ylmethyliden)hydroxylamine) in hydrochloric solutions. It was been revealed that the degree of copper(II) precipitation from aqueous solutions and hydrochloric solutions with the pH of 4 M HCl by this reagent is not higher than 52% even when the precipitant is used in abundance. These dependencies has been compared to the similar results of palladium(II) precipitation obtained when all other conditions were equal. It has been discovered that various complexes are formed when Cu(II) reacts with a β-furfuraldoxime and that it depends on the acidity of the solution. In weak acid solutions (0.01-0.1 M HCl) the «green» complex of composition [CuL4Cl2] was obtained and in this complex the oxime is coordinated with the central atom by an oxygen atom of the oxime group. The so-called «red» complex of composition [CuL2Cl2] is formed in the pH range of 1-4 M HCl and in ethanol. In this complex the coordination of ligand molecules is realized by the oxygen atom of the furan ring and by the oxygen of the oxime group. Reagent N-(furan-2-ylmethyliden)hydroxylamine can be used for practical quantitative release of palladium from hydrochloric solutions. However, it does not provide the separation of copper and palladium in their joint presence. |
| first_indexed | 2024-04-10T03:30:18Z |
| format | Article |
| id | doaj.art-e0b779c049f549d49f64e61c7203f763 |
| institution | Directory Open Access Journal |
| issn | 2410-6593 2686-7575 |
| language | Russian |
| last_indexed | 2024-04-10T03:30:18Z |
| publishDate | 2016-04-01 |
| publisher | MIREA - Russian Technological University |
| record_format | Article |
| series | Тонкие химические технологии |
| spelling | doaj.art-e0b779c049f549d49f64e61c7203f7632023-03-13T07:25:36ZrusMIREA - Russian Technological UniversityТонкие химические технологии2410-65932686-75752016-04-01112505610.32362/2410-6593-2016-11-2-50-5618THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINEE. V. Volchkova0T. M. Buslaeva1I. E. Safronova2Moscow Technological University (Institute of Fine Chemical Technologies)Moscow Technological University (Institute of Fine Chemical Technologies)Moscow Technological University (Institute of Fine Chemical Technologies)The paper is devoted to the interaction of copper(II) chloride with water soluble β-furfuraldoxime (N-(furan-2-ylmethyliden)hydroxylamine) in hydrochloric solutions. It was been revealed that the degree of copper(II) precipitation from aqueous solutions and hydrochloric solutions with the pH of 4 M HCl by this reagent is not higher than 52% even when the precipitant is used in abundance. These dependencies has been compared to the similar results of palladium(II) precipitation obtained when all other conditions were equal. It has been discovered that various complexes are formed when Cu(II) reacts with a β-furfuraldoxime and that it depends on the acidity of the solution. In weak acid solutions (0.01-0.1 M HCl) the «green» complex of composition [CuL4Cl2] was obtained and in this complex the oxime is coordinated with the central atom by an oxygen atom of the oxime group. The so-called «red» complex of composition [CuL2Cl2] is formed in the pH range of 1-4 M HCl and in ethanol. In this complex the coordination of ligand molecules is realized by the oxygen atom of the furan ring and by the oxygen of the oxime group. Reagent N-(furan-2-ylmethyliden)hydroxylamine can be used for practical quantitative release of palladium from hydrochloric solutions. However, it does not provide the separation of copper and palladium in their joint presence.https://www.finechem-mirea.ru/jour/article/view/18β-фурфуролоксимcолянокислые растворыcopper(ii)β-furfuraldoximecomplexationthe palladium(ii) complexeshydrochloric solutionbidentate coordinationthermal stability |
| spellingShingle | E. V. Volchkova T. M. Buslaeva I. E. Safronova THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE Тонкие химические технологии β-фурфуролоксим cолянокислые растворы copper(ii) β-furfuraldoxime complexation the palladium(ii) complexes hydrochloric solution bidentate coordination thermal stability |
| title | THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE |
| title_full | THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE |
| title_fullStr | THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE |
| title_full_unstemmed | THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE |
| title_short | THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE |
| title_sort | formation of copper ii complexes with water soluble n furan 2 ylmethylidene hydroxylamine |
| topic | β-фурфуролоксим cолянокислые растворы copper(ii) β-furfuraldoxime complexation the palladium(ii) complexes hydrochloric solution bidentate coordination thermal stability |
| url | https://www.finechem-mirea.ru/jour/article/view/18 |
| work_keys_str_mv | AT evvolchkova theformationofcopperiicomplexeswithwatersolublenfuran2ylmethylidenehydroxylamine AT tmbuslaeva theformationofcopperiicomplexeswithwatersolublenfuran2ylmethylidenehydroxylamine AT iesafronova theformationofcopperiicomplexeswithwatersolublenfuran2ylmethylidenehydroxylamine AT evvolchkova formationofcopperiicomplexeswithwatersolublenfuran2ylmethylidenehydroxylamine AT tmbuslaeva formationofcopperiicomplexeswithwatersolublenfuran2ylmethylidenehydroxylamine AT iesafronova formationofcopperiicomplexeswithwatersolublenfuran2ylmethylidenehydroxylamine |