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http://hdl.handle.net/10773/20026| Title: | A dinuclear oxo-bridged molybdenum(VI) complex containing a bidentate pyrazolylpyridine ligand: Structure, characterization and catalytic performance for olefin epoxidation |
| Author: | Amarante, Tatiana R. Gomes, Ana C. Neves, Patricia Almeida Paz, Filipe A. Valente, Anabela A. Pillinger, Martyn Goncalves, Isabel S. |
| Keywords: | BOND-VALENCE PARAMETERS CYCLOOCTENE EPOXIDATION CRYSTAL-STRUCTURES DATABASE CORE DIOXO |
| Issue Date: | 2013 |
| Publisher: | ELSEVIER SCIENCE BV |
| Abstract: | The oxo-bridged dinuclear complex [Mo2O4(mu(2)-O)Cl-2(pypzEA)(2)] (2) (pypzEA = ethyl[3-(pyridin-2-yl)-1H-pyrazol-1-yl]acetate) was obtained upon the treatment of [MoO2Cl2(pypzEA)] (1) with ethanol. The molecular structure of 2 consists of two highly distorted {MoClN2O3} octahedra sharing a corner oxygen atom, with a Mo - O -Mo \"kink\" angle of 163.2(2)degrees and a Mo center dot center dot center dot Mo separation of 3.7029(7) angstrom. Catalytic results with 2 for the epoxidation of cis-cyclooctene using tert-butylhydroperoxide as oxidant compare favorably with those reported for related oxomolybdenum(VI) complexes. The reaction is homogeneous in nature, and a fraction of 2 dissolves and is converted to other types of soluble active species, one of which was isolated and identified as the oxodiperoxo complex [MoO(O-2)(2)(pypzEA)] (3). (C) 2013 Elsevier B.V. All rights reserved. |
| Peer review: | yes |
| URI: | http://hdl.handle.net/10773/20026 |
| DOI: | 10.1016/j.inoche.2013.03.028 |
| ISSN: | 1387-7003 |
| Publisher Version: | 10.1016/j.inoche.2013.03.028 |
| Appears in Collections: | CICECO - Artigos |
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