Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes
Nine dioxidomolybdenum(VI) complexes were synthesized by the reaction of MoO3 with tridentate hydrazone Schiff base ligands obtained from the reaction of aromatic acid hydrazides (3-hydroxy-2-naphthoic acid hydrazide, 4-pyridine carboxylic acid hydrazide or 2-furane carboxylic acid hydrazide) an...
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| Format: | Article |
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Wiley
2016
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| Online Access: | https://eprints.nottingham.ac.uk/39391/ |
| _version_ | 1848795826266046464 |
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| author | Bikas, Rahman Lippolis, Vito Noshiranzadeh, Nader Farzaneh-Bonab, Hossein Blake, Alexander J. Siczek, Milosz Hosseini-Monfared, Hassan Lis, Tadeusz |
| author_facet | Bikas, Rahman Lippolis, Vito Noshiranzadeh, Nader Farzaneh-Bonab, Hossein Blake, Alexander J. Siczek, Milosz Hosseini-Monfared, Hassan Lis, Tadeusz |
| author_sort | Bikas, Rahman |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Nine dioxidomolybdenum(VI) complexes were synthesized by the reaction of MoO3 with tridentate hydrazone Schiff base ligands obtained from the reaction of aromatic acid hydrazides (3-hydroxy-2-naphthoic acid hydrazide, 4-pyridine carboxylic acid hydrazide or 2-furane carboxylic acid hydrazide) and ortho-hydroxy aldehyde derivatives (5-iodo-2-hydroxybenzaldehyde, 2-hydroxy-1-naphthaldehyde or 2-hydroxy-3-methoxybenzaldehyde). All ligands and complexes were characterized by elemental analysis and spectroscopic methods. The structures of seven complexes were further elucidated by single-crystal X-ray diffraction analysis which indicated a distorted octahedral geometry at the metal centre. Spectroscopic and X-ray analyses indicated that the ligands are coordinated to the molybdenum(VI) ion as dinegative ligands due to deprotonation of phenolic OH and amidic NH groups upon complexation. These complexes were used as catalyst in the oxidation of cyclooctene and thioanisol in the presence of hydrogen peroxide as environmental friendly oxidant. In order to achieve the highest catalytic activity, the effects of important parameters such as solvent, temperature and the molar ratio of oxidant to substrate were optimized. The results indicate that electron-withdrawing substituents on the ligands increase the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes. |
| first_indexed | 2025-11-14T19:38:15Z |
| format | Article |
| id | nottingham-39391 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:38:15Z |
| publishDate | 2016 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-393912020-05-04T18:26:03Z https://eprints.nottingham.ac.uk/39391/ Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes Bikas, Rahman Lippolis, Vito Noshiranzadeh, Nader Farzaneh-Bonab, Hossein Blake, Alexander J. Siczek, Milosz Hosseini-Monfared, Hassan Lis, Tadeusz Nine dioxidomolybdenum(VI) complexes were synthesized by the reaction of MoO3 with tridentate hydrazone Schiff base ligands obtained from the reaction of aromatic acid hydrazides (3-hydroxy-2-naphthoic acid hydrazide, 4-pyridine carboxylic acid hydrazide or 2-furane carboxylic acid hydrazide) and ortho-hydroxy aldehyde derivatives (5-iodo-2-hydroxybenzaldehyde, 2-hydroxy-1-naphthaldehyde or 2-hydroxy-3-methoxybenzaldehyde). All ligands and complexes were characterized by elemental analysis and spectroscopic methods. The structures of seven complexes were further elucidated by single-crystal X-ray diffraction analysis which indicated a distorted octahedral geometry at the metal centre. Spectroscopic and X-ray analyses indicated that the ligands are coordinated to the molybdenum(VI) ion as dinegative ligands due to deprotonation of phenolic OH and amidic NH groups upon complexation. These complexes were used as catalyst in the oxidation of cyclooctene and thioanisol in the presence of hydrogen peroxide as environmental friendly oxidant. In order to achieve the highest catalytic activity, the effects of important parameters such as solvent, temperature and the molar ratio of oxidant to substrate were optimized. The results indicate that electron-withdrawing substituents on the ligands increase the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes. Wiley 2016-12-13 Article PeerReviewed Bikas, Rahman, Lippolis, Vito, Noshiranzadeh, Nader, Farzaneh-Bonab, Hossein, Blake, Alexander J., Siczek, Milosz, Hosseini-Monfared, Hassan and Lis, Tadeusz (2016) Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes. European Journal of Inorganic Chemistry . ISSN 1099-0682 (In Press) http://onlinelibrary.wiley.com/wol1/doi/10.1002/ejic.201601359/abstract doi:10.1002/ejic.201601359 doi:10.1002/ejic.201601359 |
| spellingShingle | Bikas, Rahman Lippolis, Vito Noshiranzadeh, Nader Farzaneh-Bonab, Hossein Blake, Alexander J. Siczek, Milosz Hosseini-Monfared, Hassan Lis, Tadeusz Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes |
| title | Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes |
| title_full | Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes |
| title_fullStr | Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes |
| title_full_unstemmed | Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes |
| title_short | Electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(VI)-hydrazone complexes |
| title_sort | electronic effects of aromatic rings on the catalytic activity of dioxidomolybdenum(vi)-hydrazone complexes |
| url | https://eprints.nottingham.ac.uk/39391/ https://eprints.nottingham.ac.uk/39391/ https://eprints.nottingham.ac.uk/39391/ |