Pradeep, Chullikkattil P. ; Htwe, Tin ; Zacharias, Panthapally S. ; Das, Samar K. (2004) First structurally characterized optically active mononuclear Mn(IV) complex: synthesis, crystal structure and properties of [MnIVL2] {H2L=S-(-)-2-[(2-hydroxy-1-phenylethylimino)methyl]phenol} New Journal of Chemistry, 28 . pp. 735-739. ISSN 1144-0546
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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2004...
Related URL: http://dx.doi.org/10.1039/B315658C
Abstract
The reaction of Mn(CH3COO)2·4H2O with H2L {H2L=S-(-)-2-[(2-hydroxy-1-phenylethylimino)methyl]phenol} in the presence of air afforded dark brown crystals of [MnIVL2], 1. Compound 1 crystallizes in the monoclinic chiral C2 space group. Crystals of 1 were further characterized by elemental analysis, room temperature magnetic moment determination, IR, UV-visible and EPR spectroscopy, cyclic voltammetry and circular dichroism (CD) studies. Cyclic voltammetry reveals a quasi-reversible redox wave corresponding to the Mn(IV)/Mn(III) couple. The EPR spectrum at liquid nitrogen temperature consists of a strong signal at g~4 and a weak but resolved response at g~2. The CD spectrum of 1 exhibits a negative band, such as shown by the enantiopure ligand H2L. Complex 1 was found to catalyze the oxidation of olefins using iodosobenzene as the oxidant in acetonitrile solutions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 63447 |
| Deposited On: | 29 Sep 2011 04:23 |
| Last Modified: | 29 Sep 2011 04:23 |
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