authors |
Amarante, TR; Gomes, AC; Neves, P; Paz, FAA; Valente, AA; Pillinger, M; Goncalves, IS |
nationality |
International |
journal |
INORGANIC CHEMISTRY COMMUNICATIONS |
author keywords |
Molybdenum; Dinuclear complexes; Pyrazolylpyridine ligands; Olefin epoxidation |
keywords |
BOND-VALENCE PARAMETERS; CYCLOOCTENE EPOXIDATION; CRYSTAL-STRUCTURES; DATABASE; CORE; DIOXO |
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. |
publisher |
ELSEVIER SCIENCE BV |
issn |
1387-7003 |
year published |
2013 |
volume |
32 |
beginning page |
59 |
ending page |
63 |
digital object identifier (doi) |
10.1016/j.inoche.2013.03.028 |
web of science category |
Chemistry, Inorganic & Nuclear |
subject category |
Chemistry |
unique article identifier |
WOS:000320217700014
|