Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysis
The kinetics of hydroxide ion attack on bis(bromosalicylidene alanate)iron (II) (bsali), bis(bromosalicylidene phenylalanate)iron(II) (bsphali), bis(bromosalicylidene aspartate)iron(II) (bsasi), (bromosalicylidene histidinate)iron(II) (bshi), bis(bromosalicylidene arginate)iron(II) (bsari) have been...
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| Format: | Article |
| Language: | English |
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Elsevier
2017-05-01
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| Series: | Arabian Journal of Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535214000161 |
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| author | Laila H. Abdel-Rahman Rafat M. El-Khatib Lobna A.E. Nassr Ahmed M. Abu-Dief |
| author_facet | Laila H. Abdel-Rahman Rafat M. El-Khatib Lobna A.E. Nassr Ahmed M. Abu-Dief |
| author_sort | Laila H. Abdel-Rahman |
| collection | DOAJ |
| description | The kinetics of hydroxide ion attack on bis(bromosalicylidene alanate)iron (II) (bsali), bis(bromosalicylidene phenylalanate)iron(II) (bsphali), bis(bromosalicylidene aspartate)iron(II) (bsasi), (bromosalicylidene histidinate)iron(II) (bshi), bis(bromosalicylidene arginate)iron(II) (bsari) have been reported in different binary aqueous solvent mixtures at 298 K. The observed reactivity trends are discussed in terms of the hydrophilic and hydrophobic forms of the complexes investigated, as well as the transfer chemical potentials of hydroxide ion and the complex. Both the solvent–solute and solvent–solvent interactions have been considered. The hydrophobic character of the complexes studied was manifested by decreasing in reactivity. Solvent effect on reactivity trends of the investigated complexes has been analyzed into initial and transition state components by using the transfer chemical potentials of the reactants and the kinetic data of the studied compounds. The decrease in the observed rate constant values (kobs) of the base hydrolysis of the investigated complexes with increasing of solvent % is dominated by the initial state (IS). |
| first_indexed | 2024-04-12T07:05:37Z |
| format | Article |
| id | doaj.art-108a1b4b8ce6463781a89bab001bc0d6 |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-12T07:05:37Z |
| publishDate | 2017-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-108a1b4b8ce6463781a89bab001bc0d62022-12-22T03:42:49ZengElsevierArabian Journal of Chemistry1878-53522017-05-0110S2S3338S334610.1016/j.arabjc.2014.01.013Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysisLaila H. Abdel-RahmanRafat M. El-KhatibLobna A.E. NassrAhmed M. Abu-DiefThe kinetics of hydroxide ion attack on bis(bromosalicylidene alanate)iron (II) (bsali), bis(bromosalicylidene phenylalanate)iron(II) (bsphali), bis(bromosalicylidene aspartate)iron(II) (bsasi), (bromosalicylidene histidinate)iron(II) (bshi), bis(bromosalicylidene arginate)iron(II) (bsari) have been reported in different binary aqueous solvent mixtures at 298 K. The observed reactivity trends are discussed in terms of the hydrophilic and hydrophobic forms of the complexes investigated, as well as the transfer chemical potentials of hydroxide ion and the complex. Both the solvent–solute and solvent–solvent interactions have been considered. The hydrophobic character of the complexes studied was manifested by decreasing in reactivity. Solvent effect on reactivity trends of the investigated complexes has been analyzed into initial and transition state components by using the transfer chemical potentials of the reactants and the kinetic data of the studied compounds. The decrease in the observed rate constant values (kobs) of the base hydrolysis of the investigated complexes with increasing of solvent % is dominated by the initial state (IS).http://www.sciencedirect.com/science/article/pii/S1878535214000161Base hydrolysisKineticsSolvolysisChelateGibb’s Free Energy of TransferInitial state-transition state |
| spellingShingle | Laila H. Abdel-Rahman Rafat M. El-Khatib Lobna A.E. Nassr Ahmed M. Abu-Dief Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysis Arabian Journal of Chemistry Base hydrolysis Kinetics Solvolysis Chelate Gibb’s Free Energy of Transfer Initial state-transition state |
| title | Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysis |
| title_full | Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysis |
| title_fullStr | Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysis |
| title_full_unstemmed | Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysis |
| title_short | Reactivity trends of hydroxide ion attack on high spin Fe(II) complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents: Gibb’s Free Energy of Transfer and initial-transition state analysis |
| title_sort | reactivity trends of hydroxide ion attack on high spin fe ii complexes including bromosalicylidene amino acid ligands in some mixed aqueous solvents gibb s free energy of transfer and initial transition state analysis |
| topic | Base hydrolysis Kinetics Solvolysis Chelate Gibb’s Free Energy of Transfer Initial state-transition state |
| url | http://www.sciencedirect.com/science/article/pii/S1878535214000161 |
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