43 research outputs found
Multi-vanadium substituted polyoxometalates as efficient electrocatalysts for the oxidation of l-cysteine at low potential on glassy carbon electrodes
Get PDFThe electrochemical behaviours of the sandwich-type complex
[As2W18(VO)3O66]11- were studied in a pH 7 medium and compared with those of
the three following Dawson-type vanadium-substituted complexes: [P2V2W16O62]8-
(P2V2W16), [P2MoV2W15O62]8- (P2MoV2W15) and [P2V3W15O62]9- (P2V3W15).
Electrochemistry shows that the sandwich-type POM contains 2 VIV centers and
one VV center and must be formulated As2V2IVVW18, in agreement with titration,
elemental analysis and magnetic measurements on this element.. All the POMs of
this work proved efficient for the oxidation of L-cysteine. Comparison of the
present results with those of mono-Vanadium substituted POMs indicates that
accumulation of vanadium atoms in the POM framework is beneficial in the
electrocatalytic process. In addition, the present work highlights the
important influence of the POM structure in the electrocatalytic oxidation of
L-cysteine. The remarkable outcome of this work is that the potential for the
oxidation of L-cysteine in the presence of the selected POMs has been
substantially driven in the negative direction compared to the case of glassy
carbon alone, a feature which is associated with faster kinetics. The stability
of the systems must also be pointed out
Functionalization of polyoxometalate by carboxylato and azido ligands: macromolecular complexes and extended compounds
No full textSynthesis and characterization of the bimetallic series [S2WS2Fe(NCS)(X)]2- (X = Cl-, NCS-, N3-)
No full textSynthesis of monophosphonic acid ligands with a phenanthroline core
No full textInternational audienc
{Mo<sub>2</sub>O<sub>2</sub>X<sub>2</sub>}<sup>2+</sup> (Xâ =â O, S), a magic building block for the design of wheel shaped metalates
No full textGold nanocomposites with rigid fully conjugated heteroditopic ligands shell as nanobuilding blocks for coordination chemistry
No full textHybrid OrganicâInorganic 1D and 2D Frameworks with -Keggin Polyoxomolybdates as Building Blocks
No full textInternational audienc
Synthesis of valuable terpyridine building blocks to generate a variety of metallodendrons by the convergent approach
No full textA tetranuclear oxomolybdenum(V) complex with bridging squarate ligands, [MoV4O8(OH)2(H2O)2(C4O4)2]2â
No full textInternational audienc
