The method of electrochemical obtain ni(oh) fofanah and diphosphite complexes

 

The invention relates to electrochemical obtain Ni(O) fofanah and diphosphite complexes in the cell with the use of direct and alternating current. The method of electrochemical get fofanah and diphosphinic Ni(O) complexes is carried out in the electrolyzer electrolyzer containing an anode and a cathode made of metal with a low hydrogen overvoltage, by anodic dissolution of metallic Nickel in an aprotic solvent selected from the group comprising acetonitrile, dimethylformamide and 3-pentenenitrile, when the anode current density of 1-20 mA/cm2with further electroreduction in the specified solvent Nickel ions at the cathode at a cathode current density of 1 to 15 mA/cm2in the presence of phosphate ligands using AC or DC, at a temperature of from 10 to 40C. is Achieved by increasing the yield of the target products. 10 C.p. f-crystals.

Description text in facsimile form (see graphic part).

Claims

1. The method of electrochemical get fofanah and diphosphinic Ni(O)complexes in electrolyzer the electrolyzer containing an anode and a cathode made of metal with low Perrin from the group including acetonitrile, dimethylformamide and 3-pentenenitrile, when the anode current density of 1-20 mA/cm2with further electroreduction in the specified solvent Nickel ions at the cathode at a cathode current density of 1 to 15 mA/cm2in the presence of phosphate ligands using AC or DC, at a temperature of (-10)-(+40)C.

2. The method according to p. 1, characterized in that the cathode is used metals selected from the group consisting of platinum, gold, palladium, ruthenium, iridium, cobalt, molybdenum, Nickel and iron.

3. The method according to p. 1 or 2, characterized in that the phosphate complexes contain fosfatnye ligands of General formula P(or SIG)3where R is an alkyl radical containing 1-10 carbon atoms or aryl group or its derivatives, and diphosphine ligands, including substituted pyrocatechin, bis(phenol) or bis(naphthol).

4. The method according to p. 3, characterized in that the ratio between ions Ni2+obtained during electrochemical dissolution of metallic Ni, and phosphate ligands is 1:4 when fofanah ligands, 1:2 in the case diphosphite ligands or 1:1 in the case of sterically obstructed diphosphite ligands.

5. The method according to p. 1 different is coming down in the presence of acetylacetone.

6. The method according to 5, characterized in that the number of acetylacetone in the electrolyte corresponds to the number Ni2+ions dissolved in the course of preliminary electrolysis.

7. The method according to p. 1, characterized in that the electrolysis after dissolution of metallic Nickel is carried out with soluble anode selected from metals II, IV, V, VI, VII and VIII groups of the Periodic system of elements.

8. The method according to p. 7, characterized in that the anode comprises zinc, and the cathode comprises Nickel.

9. The method according to p. 8, characterized in that the ratio of the surface area of Zn anode and a Ni cathode is about 1:1.

10. The method according to p. 8, characterized in that the amount of dissolved Zn2+ions (missed charge) corresponds to an equimolar quantity of the formed Ni(O) complex.

11. The method according to p. 1, characterized in that use alternating current.

 

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7 cl, 5 tbl, 27 ex

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