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Method for preparing (hydrogen) palladium carbonate complex with amine ligand

A technology of palladium complexes and ligands, which is applied in the field of preparing palladium complexes, and can solve the problems that Pd bicarbonate does not exist and is not commercially available.

Active Publication Date: 2014-10-29
UMICORE GALVANOTECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar bicarbonate [Pd(EDA) 2 ] (HCO 3 ) 2 It cannot be prepared by this synthetic route at present, because the corresponding bicarbonate Pd(II)(Pd(HCO 3 ) 2 ) does not exist, or is not commercially available

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Example - Reaction of tetraammine palladium(II) bicarbonate with ethylenediamine by ligand exchange with ethylenediamine (EDA)

[0020] equipment:

[0021] Three-necked flask, stirrer, heater, thermometer, reflux condenser, pH electrode.

[0022] Three-necked flask, stirrer, heater, thermometer, reflux condenser, pH electrode.

[0023] Initial material:

[0024] components

Mass [g]

Molar mass [mol]

Molar mass [g / mol]

Density [g / cm 3 ]

Volume [ml]

Palladium

100 *

0.940

106.4

-

-

Ethylenediamine (EDA)

117

1.947

60.1

0.898

130

[0025] * 277g tetraammine palladium bicarbonate (II) TAPHC (36% Pd),

[0026] Molar ratio Pd:EDA=1:2.07

[0027] Quality of chemicals used:

[0028] Tetraammine palladium(II) bicarbonate from Alfa Aesar (Product No. 45082)

[0029] Ethylenediamine, 99%, synthetic reagent (eg Merck No. 800947)

[0030] Procedure for a final volume...

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PUM

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Abstract

Production of palladium complex compounds consisting of a bivalent palladium cation, one or more amine ligands and / or one carbonate anion or two hydrogen carbonate anions, comprises reacting the corresponding tetraamine palladium(II)-dihydrogen carbonate and / or the tetraamine palladium(II)-carbonate in solution with the amine ligands under a condition in which the released ammonia is separated.

Description

technical field [0001] The present invention relates to a process for the preparation of palladium complexes. In particular, the present invention relates to a process in which an ammonia complex of palladium (hydrogen)carbonate is converted into an amine-utilizing complex. Background technique [0002] Conventional palladium-nickel electrolytes contain ammonia and chloride and are therefore potentially hazardous to the health of operators and destructive to corroding device materials. In the conventional alkaline-ammoniacal method according to the prior art, dichlorotetraammine palladium (II) [(NH 3 ) 4 Pd]Cl 2 Or diammine palladium(II) dinitrite [(NH 3 ) 2 Pd](NO 2 ) 2 As a palladium compound for the deposition of palladium or palladium alloys. In the existing chloride-free method, tetraammine palladium (II) sulfate [(NH 3 ) 4 Pd]SO 4 Used instead of chloride compounds (Galvanotechnik3 (2007), p.677). In these methods, aggressive chlorides are dispensed with, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/00
CPCC07F15/0066
Inventor S·伯格尔F·西蒙F·奥伯斯特U·曼兹K·布朗德B·维姆勒
Owner UMICORE GALVANOTECHN
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