A dinuclear oxomolybdenum(VI) complex, [Mo2O6(4,4 '-di-tert-butyl-2,2 '-bipyridine)(2)], displaying the {MoO2(mu-O)(2)MoO2}(0) core, and its use as a catalyst in olefin epoxidation

authors	Amarante, TR; Neves, P; Paz, FAA; Pillinger, M; Valente, AA; Goncalves, IS
nationality	International
journal	INORGANIC CHEMISTRY COMMUNICATIONS
author keywords	Molybdenum; Dinuclear complexes; 4,4 '-di-tert-butyl-2,2 '-bipyridine; Olefin epoxidation; Crystal structure
keywords	CAMBRIDGE STRUCTURAL DATABASE; TERT-BUTYL HYDROPEROXIDE; BOND-VALENCE PARAMETERS; DIOXOMOLYBDENUM(VI) COMPLEXES; CRYSTAL-STRUCTURE; LEWIS-BASE; MOLYBDENUM; LIGANDS; LIQUID; OXO
abstract	The dinuclear complex [Mo2O6(di-tBu-bipy)(2)] (1) (di-tBu-bipy = 4,4'-di-tert-butyl-2,2'-bipyridine) was obtained as a minor product of the hydrothermal reaction of MoO3 and di-tBu-bipy, and structurally characterized by single-crystal X-ray diffraction. In the molecular structure of 1 two distorted MoO6 octahedra share a common edge to form a dioxo-bridged Mo2O6 unit which is coordinated by di-tBu-bipy ligands. The catalytic performance of 1 for the epoxidation of non-functionalized olefins using tert-butylhydroperoxide as oxidant compares favorably with that reported for other oxomolybdenum(VI) complexes bearing the same organic ligand. The catalyst exhibits regioselectivity toward internal olefin epoxidation over external olefin epoxidation. (C) 2012 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE BV
issn	1387-7003
year published	2012
volume	20
beginning page	147
ending page	152
digital object identifier (doi)	10.1016/j.inoche.2012.02.038
web of science category	Chemistry, Inorganic & Nuclear
subject category	Chemistry
unique article identifier	WOS:000305665800035