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Closed Access item Synthesis, structure, and reactivity of some new dipyridyl and diamine-bridged dinuclear oxomolybdenum(VI) complexes

Authors:Dinda, Rupam
Ghosh, Saktiprosad
Falvello, Larry R.
Tomás, Milagros
Keywords:Tridentate ONO donor ligand, Dipyridyl and diamine-bridged compound, Molybdenum(VI) dimer, X-ray crystal structure, Oxotransfer property
Issue Date:Aug-2006
Citation:Polyhedron 25(12): 2375-2382 (2006)
Abstract:Some new diimine and diamine-bridged dinuclear Mo(VI) complexes of the general formula [(MoO2L)2(μ-N–N)] [(μ-N–N) = 4,4′-bipyridine (4,4′-bpy) (2); trans-1,2-bis(4-pyridyl) ethene (bpe) (3); trans-1,2-bis(4-pyridyl) ethane (bpa) (4) and p-phenylenediamine (ppda) (5)] along with their common mononuclear precursor [MoO2L(C2H5OH)] (1) have been synthesized, using 2-hydroxy benzoylhydrazone of 2-hydroxybenzaldehyde as tridentate ONO donor Ligand (LH2), and structurally characterized. Structures of all the three dinuclear complexes 2, 3 and 5 are centrosymmetric with both the Mo(VI) acceptor centers existing in the same coordination environment. One 2 from the four dinuclear complexes has taken part in oxo-transfer to the substrate PPh3 forming the corresponding dinuclear Mo(IV)–Mo(IV) complex [(MoOL)2(μ-N–N)] (2a).
Description:8 pages, 6 tables, 4 figures.
Publisher version (URL):http://dx.doi.org/10.1016/j.poly.2006.02.002
Appears in Collections:(ICMA) Artículos

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