authors |
Alonso, JC; Neves, P; Silva, C; Valente, AA; Brandao, P; Quintal, S; de Brito, MJV; Pinto, P; Felix, V; Drew, MGB; Pires, J; Carvalho, AP; Calhorda, MJ; Ferreira, P |
nationality |
International |
journal |
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY |
author keywords |
molybdenum complexes; N ligands; clays; epoxidation |
keywords |
TERT-BUTYL HYDROPEROXIDE; DIOXOMOLYBDENUM(VI) COMPLEXES; EPOXIDATION CATALYSTS; MOLYBDENUM COMPLEXES; DERIVATIVES; ENCAPSULATION; DICARBONYL; ADSORPTION; PRECURSORS; KINETICS |
abstract |
Molybdenum(II) complexes [MOX(CO)(2)(eta(3)-allyl)(CH3CN)(2)] (X = Cl or Br) were encapsulated in an aluminium-pillared natural clay or a porous clay heterostructure and allowed to react with bidentate diimine ligands. All the materials obtained were characterised by several solid-state techniques. Powder XRD, and Al-27 and Si-29 MAS NMR were used to investigate the integrity of the pillared clay during the modification treatments. C-13 CP MAS NMR, FTIR, elemental analyses and low-temperature nitrogen adsorption showed that the immobilisation of the precursor complexes was successful as well as the in situ ligand-substitution reaction. The new complex [MoBr(CO)(2)(eta(3)-allyl)(2-aminodipyridyl)] was characterised by single-crystal X-ray diffraction and spectroscopic techniques, and NMR studies were used to investigate its fluxional behaviour in solution. The prepared materials are active for the oxidation of cis-cyclooctene using tert-butyl hydroperoxide as oxidant, though the activity of the isolated complexes is higher. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008). |
publisher |
WILEY-V C H VERLAG GMBH |
issn |
1434-1948 |
year published |
2008 |
issue |
7 |
beginning page |
1147 |
ending page |
1156 |
digital object identifier (doi) |
10.1002/ejic.200700939 |
web of science category |
Chemistry, Inorganic & Nuclear |
subject category |
Chemistry |
unique article identifier |
WOS:000254582200021
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ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
2.529 |
5 year journal impact factor |
2.284 |
category normalized journal impact factor percentile |
65.556 |
dimensions (citation analysis):
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altmetrics (social interaction):
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