Synthesis, characterisation and catalytic activities of vanadium complexes containing ONN donor ligand (E)-4-[(2-(dimethylamino)ethylimino] methyl-5-(hydroxymethyl)-2-methylpyridin-3-ol
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Creator |
Maurya, Mannar R
Bisht, Manisha Avecilla, Fernando |
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| Date |
2011-11-01T04:54:13Z
2011-11-01T04:54:13Z 2011-11 |
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| Identifier |
0975-0975(Online); 0376-4710(Print)
http://hdl.handle.net/123456789/12992 |
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| Description |
1562-1573
Reaction between [V<sup>IV</sup>O(acac)<sub>2</sub>] and the ONN donor ligand (E)-4-[(2-(dimethylamino)ethylimino]methyl-5-(hydroxymethyl)-2-methylpyridin-3-ol (Hpydx-dmen) results in the formation of the complex [V<sup>IV</sup>O(acac)(pydx-dmen)] (<b style="">1</b>). In (<b style="">1</b>), the vanadium center adopts a distorted six-coordinated octahedral geometry where the ligand coordinates through one O and two N atoms; the oxo and two O<sub>acac</sub> atoms complete the coordination sphere. The poorly stable oxidoperoxidovanadium(V) complex [V<sup>V</sup>O(O<sub>2</sub>)(pydx-dmen)] (<b style="">2</b>) has been prepared by the treatment of (<b style="">1</b>) with aqueous 30 % H<sub>2</sub>O<sub>2</sub>. Its formation has also been demonstrated in solution by treating (<b>1</b>) with H<sub>2</sub>O<sub>2</sub> in methanol. Treatment of the ligand with vanadium(IV)–exchanged zeolite-Y followed by aerial oxidation gives the dioxidovanadium(V) complex encapsulated in the nano-cavity of zeolite-Y, [V<sup>V</sup>O<sub>2</sub>(pydx-dmen)]-Y (<b>3</b>). The encapsulated complex, [V<sup>V</sup>O<sub>2</sub>(pydx-dmen)]-Y (<b>3</b>), catalyses the oxidation of styrene, methyl phenyl sulfide, diphenyl sulfide and cyclohexene using H<sub>2</sub>O<sub>2</sub> as oxidant in good yield. |
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en_US
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| Publisher |
NISCAIR-CSIR, India
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Source |
IJC-A Vol.50A(11) [November 2011]
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| Subject |
Coordination chemistry
Encapsulated compounds Catalysts Oxidation Oxidovanadium ONN ligands |
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| Title |
Synthesis, characterisation and catalytic activities of vanadium complexes containing ONN donor ligand (E)-4-[(2-(dimethylamino)ethylimino] methyl-5-(hydroxymethyl)-2-methylpyridin-3-ol
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| Type |
Article
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