authors |
Gomes, AC; Neves, P; Cunha-Silva, L; Valente, AA; Goncalves, IS; Pillinger, M |
nationality |
International |
journal |
CATALYSIS SCIENCE & TECHNOLOGY |
keywords |
LEWIS-BASE ADDUCTS; RING-OPENING REACTIONS; MOLYBDENUM(VI) DICHLORIDE DIOXIDE; VALENT OXO-MOLYBDENUM; OLEFIN EPOXIDATION; DIOXOMOLYBDENUM(VI) COMPLEXES; THIOCYANATODIOXOMOLYBDENUM(VI) COMPLEXES; STRUCTURAL-CHARACTERIZATION; CYCLOOCTENE EPOXIDATION; EFFICIENT CATALYSTS |
abstract |
The application field of dichloridodioxidomolybdenum (VI) chelate complexes, which have been intensively investigated as catalysts for liquid-phase olefin epoxidation, is broadened to encompass acid catalysis, in particular, alcoholysis and acetalisation reactions. Complex [MoO2Cl2(L)] (1) with L = 4,4'-di-tert-butyl-2,2'-bipyridine was chosen as (pre)catalyst. Depending on the reaction conditions, 1 either remained structurally intact or was transformed into different metal species, the structures of which were determined on the basis of single-crystal X-ray diffraction, spectroscopic techniques (FT-IR and H-1 NMR), and elemental analysis. The first example of a mixed-ligand complex of the type [MoO2X(OR)(L)] (X = halide) is disclosed. This complex is one of only a handful of complexes known to date that exhibit an all-cis configuration instead of the usual cis-oxido, trans-X, cis-L configuration (X = anionic ligand). Mechanistic considerations of the formation of the metal species are made. |
publisher |
ROYAL SOC CHEMISTRY |
issn |
2044-4753 |
year published |
2016 |
volume |
6 |
issue |
13 |
beginning page |
5207 |
ending page |
5218 |
digital object identifier (doi) |
10.1039/c5cy02052b |
web of science category |
Chemistry, Physical |
subject category |
Chemistry |
unique article identifier |
WOS:000378734700060
|
ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
5.721 |
5 year journal impact factor |
5.863 |
category normalized journal impact factor percentile |
74.528 |
dimensions (citation analysis):
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altmetrics (social interaction):
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