Spectroscopic and electrochemical characterization of 18-molybdodisulfate (VI)(4-), S2Mo18O624-.
スポンサーリンク
概要
- 論文の詳細を見る
The formation conditions of a yellow Dawson-type S<SUB>2</SUB>Mo<SUB>18</SUB>O<SUB>62</SUB><SUP>4−</SUP> anion have been investigated as functions of the concentrations of Mo(VI), H<SUB>2</SUB>SO<SUB>4</SUB>, organic solvents, the nature of the organic solvents used, temperature of the solution, and the reaction time. For a 50 mM Mo(VI)/50% (v/v) acetonitrile system, the yellow S<SUB>2</SUB>Mo<SUB>18</SUB>O<SUB>62</SUB><SUP>4−</SUP> anion formed in 0.2–1.0 M H<SUB>2</SUB>SO<SUB>4</SUB>, while a pale-yellow Mo<SUB>6</SUB>O<SUB>19</SUB><SUP>2−</SUP> anion did in 0.04–0.3 M H<SUB>2</SUB>SO<SUB>4</SUB>. The yellow heteropolyanion is electrochemically reduced in six successive steps to mixed-valence heteropoly blues at the glassy carbon electrode. Each of the first four waves corresponds to a reversible two-electron transfer. The mixed-valence blue species were characterized by their inherent visible and infrared (IR) spectra.
- 公益社団法人 日本化学会の論文
著者
-
Himeno Sadayuki
Department Of Chemistry Faculty Of Science Kobe University
-
Saito Atsuyoshi
Department Of Chemistry Faculty Of Science Kobe University
-
Hori Toshitaka
Department of Chemistry, College of Liberal Arts and Sciences, Kyoto University
関連論文
- Preparation, Structure, and Characterization of a Novel Diphosphoheptadecatungstate Complex, [(P_2O_7)W_O_]^
- Preparation and Characterization of an α-Keggin-Type [SW_O_]^ Complex
- Preparation and Characterization of an α-Wells-Dawson-Type [V_2Mo_O_]^ Complex
- Synthesis, Structure, and Characterization of an α-Dawson-type [S_2W_O_]^ Complex
- Direct Spectrophotometric Determination of Phosphonate and Diphosphate Ions Based on the Formation of Heteropoly Blue Complexes
- Voltammetric Determination of Vanadium(V)and Vanadium(IV)through the Formation of a 12-Molybdovanadate(V)Complex
- Redox Properties and Basicity of Keggin-Type Polyoxometalate Complexes
- A New Triterpenoid Saponin (Chromosaponin I) with a Reducing Power
- Non-Bornian Ion Solvation Energy. An Approach from Redox Potentials of Heteropoly Oxometalate Anions
- Preparation of the 11-Molybdogermanate(IV) Complex
- Simultaneous Determination of Periodate(VII) and Iodate(V) by Capillary Electrophoresis
- Formation and Conversion of Yellow Molybdophosphonate Complexes in Aqueous-Organic Media
- Raman Studies on the Identification of Isopolymolybdates in Aqueous Solution
- Formation of α- and β-Keggin-Type [PW_O_]^ Complexes in Aqueous Media
- Capillary electrophoretci determination of Ga(III) based on the formation of a heteropolyoxomolybdate complex
- Selective Determination of Cadmium(II) from Divalent Metal Ions in Environmental Samples by Capillary Electrophoresis Using In-capillary Complexation with a Lacunary Keggin-type [PW_O_]^ Complex
- Simultaneous Determination of Chromium(VI)and Chromium(III)by Capillary Electrophoresis
- The Structure of a Meso-Type Heteropolyion of Tetrahydrogen Disodium Dodecamolybdohexaphosphonate(III) (6^-) Contained in [NEt_4]_6[H_4Na_2(PH)_6Mo_O_]・4H_2O
- Formation of a Keggin-Type 12-Molybdogallate(III)Complex in Aqueous-Organic Media and the Application to the Voltammetric Determination of Gallium(III)
- Voltammetric characterization of .ALPHA.- and .BETA.-dodecamolybdophosphates in aqueous organic solutions.
- Polarographic catalytic currents observed in mixtures of Pb(II) and H2O2 in neutral solutions.
- Catalytic polarographic wave of Fe(II) in neutral thiocyanate solutions at dropping mercury electrode.
- Preparation and properties of heteropoly molybdovanadate(V) complexes.
- Studies on pulse polarography. IV. Normal pulse polarographic behavior of Fe(II) in an unbuffered medium and catalytic wave for Fe(II)-chlorate system.
- Spectroscopic and electrochemical characterization of 18-molybdodisulfate (VI)(4-), S2Mo18O624-.
- Synthesis and characterization of 18-molybdopyrophosphate complex.