Chemical, electrochemical and structural studies of somecis-dioxomolybdenum(VI) complexes of two tridentate ONS chelating ligands
- 10 September 2007
- journal article
- research article
- Published by Taylor & Francis Ltd in Journal of Coordination Chemistry
- Vol. 60 (20), 2177-2190
- https://doi.org/10.1080/00958970701258192
Abstract
Several cis-dioxomolybdenum complexes of two tridentate ONS chelating ligands H2L1 and H2L2 (obtained by condensation of S-benzyl and S-methyl dithiocarbazates with 2-hydroxyacetophenone) have been prepared and characterized. Complexes 1 and 2 are found to be of the form MoO2 (CH3OH) L1 · CH3OH and MoO2L, respectively, (where L2– = dianion of H2L1 and H2L2). The sixth coordination site of the complexes acts as a binding site for various neutral monodentate Lewis bases, B, forming complexes 3–10 of the type MoO2LB (where B = γ-picoline, imidazole, thiophene, THF). The complexes were characterized by elemental analyses, various spectroscopic techniques, (UV-Vis, IR and 1H NMR), measurement of magnetic susceptibility at room temperature, molar conductivity in solution and by cyclic voltammetry. Two of the complexes MoO2(CH3OH) L1 · CH3OH (1) and MoO2L1(imz) (5) were structurally characterized by single crystal X-ray diffraction. Oxo abstruction reactions of 1 and 5 led to formation of oxomolybdenum(IV) complex of the MoOL type.Keywords
This publication has 45 references indexed in Scilit:
- Structural and Functional Aspects of Metal Sites in BiologyChemical Reviews, 1996
- Trans Influence of Oxo and Dithiolene Coordination in Oxidized Models of Molybdenum Oxidoreductase: Synthesis, Structures, and Properties of Q2[MoVIO2(1,2-benzenedithiolato)2] (Q = NEt4, PPh4) and Related ComplexesInorganic Chemistry, 1996
- Synthesis, characterization, and electrochemistry of cis-dioxomolybdenum(VI) complexes of Schiff bases derived from carbohydrazide, thiocarbohydrazide, and salicylaldehyde. Crystal structures of [MoO2(o-OC6H4CH:NN:CSNHN:CHC6H4OH-o)Me2SO] and [(MoO2)2(o-OC6H4CH:NN:CONN:CHC6H4O-o)(Me2SO)2].cntdot.0.5Me2SOInorganic Chemistry, 1990
- Oxomolybdenum(IV,V,VI) complexes: structures, reactivities, and criteria of detection of binuclear (.mu.-oxo)molybdenum(V) products in oxygen atom transfer systemsInorganic Chemistry, 1989
- Chemistry of molybdenum. 4. Complexes of molybdenum(VI), -(V) and -(IV) with 2-(alkylamino)cyclopent-1-ene-1-dithiocarboxylic acids. Synthesis, electrochemistry and spectroscopic propertiesInorganic Chemistry, 1985
- Synthetic approach to the mononuclear active sites of molybdoenzymes: catalytic oxygen atom transfer reactions by oxomolybdenum(IV,VI) complexes with saturation kinetics and without molybdenum(V) dimer formationJournal of the American Chemical Society, 1984
- Structure proofs of ligated and polymeric dioxomolybdenum(VI)-tridentate complexes: MoO2(C5H3N-2,6-(CH2S)2)(C4H8SO) and [MoO2(C5H3N-2,6-(CH2O)2)]nInorganic Chemistry, 1983
- Molybdenum(IV)-oxo complexes with oxygen, nitrogen and sulfur ligands. Syntheses and electrochemical studiesInorganic Chemistry, 1982
- The molybdenum site of sulfite oxidase. Structural information from x-ray absorption spectroscopyJournal of the American Chemical Society, 1979
- Metal complexes of schiff bases formed by condensation of 2-methoxybenzaldehyde and 2-hydroxybenzaldehyde with S-benzyldithiocarbazateJournal of Inorganic and Nuclear Chemistry, 1977