Anionic type gold complex and application thereof

An anionic and gold complex technology, applied in the direction of gold organic compounds, can solve the problems of limited conductivity and water solubility, and achieve the effects of good stability, safety and reliability, and high product purity

Inactive Publication Date: 2012-10-17
长沙铂鲨环保设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the above-mentioned compounds are molecular compounds, and their very limited conductivity and water solubilit

Method used

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  • Anionic type gold complex and application thereof
  • Anionic type gold complex and application thereof
  • Anionic type gold complex and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 2.35 grams of gold chloride, and dissolve it in an aqueous solution containing 50 g / L of ammonium chloride and 150 g / L of hydrochloric acid at room temperature; Slowly drop 50g / L cysteine ​​at the same temperature (H-Cys stands for cysteine, Cys - Cysteine ​​anion) solution, it is found that turbidity appears in the mixed solution; if necessary, take cooling measures to keep the temperature of the reaction system basically stable, and take airtight measures to prevent air or oxygen from entering the reaction system; continue to drop such Cysteine ​​solution until the precipitate no longer increases; filter the above mixture containing turbidity and wash the resulting precipitate, and store the obtained precipitate in airtight conditions at 0°C-5°C, tentatively named It is an intermediate ①; in addition, mix cysteine ​​and potassium hydroxide at a molar ratio of 1:1 to obtain a potassium cysteine ​​solution, and prepare a solution with a potassium cysteine ​​content...

Embodiment 2

[0034] Take 2.5 grams of gold thiourea {Au (TU) 2}Cl (TU stands for thiourea), dissolved in 100 grams of DI water; slowly drop 50 g / L mercaptoethanol (H- ME stands for mercaptoethanol, H stands for its mercapto active hydrogen H, ME stands for the rest of the solution except H), and it is found that turbid precipitates appear in the mixed solution; if necessary, take cooling measures to maintain the temperature of the reaction system basically stable, and adopt airtight and other methods to block air or oxygen from entering the reaction system; continue to add such H-ME solution dropwise until the precipitate no longer increases; filter the above-mentioned mixture containing the precipitate and wash the resulting precipitate, and the obtained precipitate The product is stored in an anaerobic environment and temporarily named as precipitate ①; in addition, H-ME and potassium hydroxide are mixed according to the molar ratio of 1:1 to obtain a K-ME solution, and the content of K-...

Embodiment 3

[0039] Take 4 grams of potassium chloroaurate, dissolve it in 100 grams of DI water, adjust its pH value to 4.0~6.1 with 50 g / L potassium carbonate solution, and obtain Au (Ⅲ) solution; at a temperature higher than the freezing point of the above mixture solution Add slowly dropwise ammonium thioglycolate (NH 4 + MA - ) Liquid (MA - It represents the corresponding negative monovalent anion that has removed an active hydrogen from the thioglycolic acid molecule), and it is found that a turbid precipitate appears in the mixed solution. If necessary, take cooling measures to maintain the temperature of the reaction system at 5°C, and continue to drop the above mercapto Ammonium acetate until the turbidity no longer increases; the above-mentioned mixture containing the precipitate is filtered and the resulting precipitate is washed, and the obtained precipitate is named intermediate ①; another portion of potassium hydroxide is prepared with a concentration of 0.2M ( mol / L) solu...

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Abstract

The invention belongs to the field of anionic type gold complex, and specifically provides an anionic type gold complex and an application thereof. The complex is characterized in that: a complex anion [AualphaLm]<-phi> formed by gold and a ligand contanining no free cyanogen (also known as complexing agent) L is adopted as a core component. Phi is the negative charge number of the complex anion [AualphaLm]<-phi>. The general chemical formula of a corresponding gold compound is Mr[AualphaLm]q.bH2O. L represents the ligand containing no free cyanogens, m represents a coordination number, M and r respectively represents an anion and a number thereof, b represents the number of crystal water, and alpha, m and phi are positive integers which are not 0. With a coordination reaction of a material containing gold and a material containing the ligand L, the compound can be prepared. The compound can be applied in fields such as electroplating and chemical plating.

Description

technical field [0001] The invention belongs to the field of anionic gold complexes, and specifically provides a class of - ) Anionic gold complexes (also known as coordination compounds) and their applications. Background technique [0002] Water-soluble gold complexes are involved in chemical immersion gold, such as chemical nickel-gold process in printed circuit board (PCB) production, metal plating, metal powder manufacturing and other fields. Cyanide {CN -} or nitrile gold complexes are the main gold salts currently used for gold plating, such as gold-plated gold and chemical gold-plated metal gold cyanide M + [Au(CN) 2 ] - (M=Na + , K + ,NH 4 + ), citrate gold salt containing malononitrile, etc., their core components are gold complex ions formed by cyanide, nitrile and gold; There are great potential safety hazards and environmental pollution problems in the processing, for example: the application number is CN200610134865.2 (gold citrate salt for gold platin...

Claims

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Application Information

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IPC IPC(8): C07F1/12C25D3/48C23C18/42
Inventor 李德良张云亮李乐张建国张闯
Owner 长沙铂鲨环保设备有限公司
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