Process for preparing complexes of palladium (hydrogen)carbonate with amine ligands

A technology for palladium complexes and ligands, applied in the field of preparing palladium complexes, can solve problems such as not being commercially available, non-existing bicarbonate Pd and the like

Active Publication Date: 2011-04-13
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 of 1 lit...

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PUM

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Abstract

The present invention relates to a process for preparing palladium complexes. In particular, the present invention relates to a process in which ammoniacal complexes of palladium (hydrogen)carbonate are converted into complexes with oligoamine ligands.

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 Applications(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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