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| Title: | A family of mononuclear molybdenum-(VI), and -(IV) oxo complexes with a tridentate (ONO) ligand |
| Authors: | Dinda, R
Sengupta, P
Ghosh, S
Mayer-Figge, Heike
Sheldrick, W S |
| Issue Date: | 2002 |
| Publisher: | Royal Society of Chemistry |
| Citation: | J. Chem. Soc., Dalton Trans, Iss 23, P 4434-4439 |
| Abstract: | The salicylhydrazone of anthranilhydrazide (H2L) reacted with MoO2(acac)2 in refluxing alcohols to yield compounds of the general formula MoO2L(ROH)(where R = CH3, C2H5, n-C3H7, n-C4H9). The complex MoO2L(C2H5OH) is found to undergo facile reaction with heterocyclic bases to form MoO2L(Q)-type complexes where Q = pyridine, 4-picoline, imidazole and substituted imidazoles. Single crystal X-ray structural studies on the ligand H2L (1) and the complexes MoO2L(C2H5OH)(2) and MoO2L(Imz)(3) indicate that the free ligand exists in its keto form, but in the two complexes 2 and 3 the ligand coordinates to the MoO22+ core through the enolate oxygen, the phenolate oxygen and the azomethine nitrogen. Reaction of MoO2L(C2H5OH) with PPh3 in CH3CN under dry dinitrogen, in the absence and presence of bipy, produced MoIVOL (2a)(brown) and MoIVOL(bipy)(2b)(green) respectively along with Ph3PO. This reaction is reminiscent of the oxotransfer reaction from the MoO2+2 core of a molybdoenzyme to the substra... |
| Description: | Copyright for the article belongs to Royal Society of Chemistry |
| URI: | http://dx.doi.org/10.1039/b207129k
http://hdl.handle.net/2080/551 |
| Appears in Collections: | Journal Articles
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