Inorganica Chimica Acta, ( ISI ), Year (2007-3)

Title : Syntheses and structural determination of new bis(9-tungstoarsenato)tris(dioxouranate(VI) and its mono oxovanadate(IV) derivative complexes ( Syntheses and structural determination of new bis(9-tungstoarsenato)tris(dioxouranate(VI) and its mono oxovanadate(IV) derivative complexes )

Authors: Hossein Eshtiagh Hosseini ,

Access to full-text not allowed by authors

Citation: BibTeX | EndNote

The [As2W18U3O74]12_ complex is formed by the ‘‘self-assembly’’ reaction of WO4 2_;HAsO4 2_ and UO2 2þ (uranyl nitrate) ions in acidic media. The anion complex is isolated as the potassium salt and characterized by elemental analysis, IR, UV–Vis, and X-ray single crystal analysis. The complex contains an anion in which three UO2 2þ ions are unsymmetrically sandwiched between two A-a- [AsW9O34]9_ groups leading to a structure of C3v symmetry. Each uranium atom adopts pentagonal-bipyramidal coordination, achieved by three equatorial bonds to one [AsW9O34]9_and two bonds to the other. The [As2W18U2V2O73]12_and also [As2W18U3O74]12_ complexes are formed also, by reaction of the [KAs2W18U2O72]13_ with VO2+ and UO2 2þ ions in 1:1 mole ratio. The cyclic voltammogram of [As2W18U2VO73]12_ in acetate bu.er (pH 4.7) shows a reversible one-electron redox process for VIV/V couple at +0.396 (Epc) and +0.432 V (Epa).

Keywords

Polyoxometalates; Polytungstoarsenate(V); Uranyl cation; Single crystal
برای دانلود از شناسه و رمز عبور پرتال پویا استفاده کنید.

@article{paperid:1004728,
author = {Eshtiagh Hosseini, Hossein},
title = {Syntheses and structural determination of new bis(9-tungstoarsenato)tris(dioxouranate(VI) and its mono oxovanadate(IV) derivative complexes},
journal = {Inorganica Chimica Acta},
year = {2007},
month = {March},
issn = {0020-1693},
keywords = {Polyoxometalates; Polytungstoarsenate(V); Uranyl cation; Single crystal structure},
}

[Download]

%0 Journal Article
%T Syntheses and structural determination of new bis(9-tungstoarsenato)tris(dioxouranate(VI) and its mono oxovanadate(IV) derivative complexes
%A Eshtiagh Hosseini, Hossein
%J Inorganica Chimica Acta
%@ 0020-1693
%D 2007

[Download]