Studies On Some Acid Divalent-Metal Nitrilotriacetate Complexes
IR and 1H-NMR studies on nitrilotriacetic acid (H3NTA) suggest that the acid exists in the zwitterion form, which allows the existence of intermolecular hydrogen bonding. A tetrahedral structure is established for eleven (1:1) anhydrous acid-metal (II) nitrilotriacetates complexes. The ten Dq values...
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| Format: | Article |
| Language: | English |
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MDPI AG
2000-10-01
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| Series: | Molecules |
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| Online Access: | http://www.mdpi.com/1420-3049/5/10/1121/ |
| _version_ | 1819228062810636288 |
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| author | N. E. Milad E. H. Ismail W. G. Hanna E. R. Souaya |
| author_facet | N. E. Milad E. H. Ismail W. G. Hanna E. R. Souaya |
| author_sort | N. E. Milad |
| collection | DOAJ |
| description | IR and 1H-NMR studies on nitrilotriacetic acid (H3NTA) suggest that the acid exists in the zwitterion form, which allows the existence of intermolecular hydrogen bonding. A tetrahedral structure is established for eleven (1:1) anhydrous acid-metal (II) nitrilotriacetates complexes. The ten Dq values for the colored complexes were determined spectrophotometrically. The pKa values for the eleven acid metal complexes [M(HNTA)].(OH2)3] were determined and compared with the corresponding pKa values of the [M(OH2)n]+2 ions and also with the log β1 values of the corresponding [M(NTA)]- complexes. X-ray diffraction studies on the ligand and on eight of these complexes are described. |
| first_indexed | 2024-12-23T10:51:19Z |
| format | Article |
| id | doaj.art-5eabe94b3c584d47af3c98f5e58ade9b |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-23T10:51:19Z |
| publishDate | 2000-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-5eabe94b3c584d47af3c98f5e58ade9b2022-12-21T17:49:54ZengMDPI AGMolecules1420-30492000-10-015101121112910.3390/51001121Studies On Some Acid Divalent-Metal Nitrilotriacetate ComplexesN. E. MiladE. H. IsmailW. G. HannaE. R. SouayaIR and 1H-NMR studies on nitrilotriacetic acid (H3NTA) suggest that the acid exists in the zwitterion form, which allows the existence of intermolecular hydrogen bonding. A tetrahedral structure is established for eleven (1:1) anhydrous acid-metal (II) nitrilotriacetates complexes. The ten Dq values for the colored complexes were determined spectrophotometrically. The pKa values for the eleven acid metal complexes [M(HNTA)].(OH2)3] were determined and compared with the corresponding pKa values of the [M(OH2)n]+2 ions and also with the log β1 values of the corresponding [M(NTA)]- complexes. X-ray diffraction studies on the ligand and on eight of these complexes are described.http://www.mdpi.com/1420-3049/5/10/1121/nitrilotriacetic acidnitrilotriacetates complexespKa valuesX-ray diffraction |
| spellingShingle | N. E. Milad E. H. Ismail W. G. Hanna E. R. Souaya Studies On Some Acid Divalent-Metal Nitrilotriacetate Complexes Molecules nitrilotriacetic acid nitrilotriacetates complexes pKa values X-ray diffraction |
| title | Studies On Some Acid Divalent-Metal Nitrilotriacetate Complexes |
| title_full | Studies On Some Acid Divalent-Metal Nitrilotriacetate Complexes |
| title_fullStr | Studies On Some Acid Divalent-Metal Nitrilotriacetate Complexes |
| title_full_unstemmed | Studies On Some Acid Divalent-Metal Nitrilotriacetate Complexes |
| title_short | Studies On Some Acid Divalent-Metal Nitrilotriacetate Complexes |
| title_sort | studies on some acid divalent metal nitrilotriacetate complexes |
| topic | nitrilotriacetic acid nitrilotriacetates complexes pKa values X-ray diffraction |
| url | http://www.mdpi.com/1420-3049/5/10/1121/ |
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