It is an object of the present invention to provide an electrolytic solution having high oxidation decomposition potential, where dissolution and deposition of magnesium proceed repeatedly and stably, using a non-nucleophilic alkoxide-type magnesium salt.

The present invention relates to (1) an electrolytic solution for a magnesium battery comprising a mixture of a compound represented by the following general formula (I), a Lewis acid and a solvent:

##STR00001## (2) an electrochemical device comprising the electrolytic solution, a positive electrode and a negative electrode, and (3) a compound represented by the following general formula (I′):

##STR00002##

The present application provides a preparation method for trimethyl aluminum, comprising the steps of: reacting methyl aluminum dichloride or sesquimethyl aluminium chloride or dimethyl aluminum chloride with a system of metal M and methyl chloride in the presence of catalyst and solvent to produce trimethyl aluminum and chloride of metal M; wherein the catalyst is selected from metals or their ions which rank after metallic aluminum in the electrochemical series; the metal M is selected from alkali metals, alkaline earth metals or combinations thereof. The catalyst can significantly increase the reaction rate, thus allowing the reaction to be operated under very simple experimental conditions such as near atmospheric pressure, with higher reaction yields and higher purity of the products, and without by-products of aluminum metal and unreacted alkali or alkaline earth metals in products, making the handling of the products easier.

Novel high purity dimethylaluminium chloride compositions are provided that are suitable for semiconductor applications, such as atomic layer etch and aluminum ion implantation. The reduction or minimization of specified gaseous impurities allows the vapor phase of the DMAC to have purity levels of 99.9 mol % or higher to selectively etch various atomic layers with high selectivity and high etch precision at acceptable etch rates and 99 mol % or higher to ion implant aluminum ions without substantial implantation of C2H3 ions into a wafer device, thereby avoiding degradation or failure of the wafer device. Storage conditions are established that are conducive to maintaining the high purity levels required for such semiconductor applications.

Disclosed herein are methods for synthesizing low valence, titanium-aluminum complexes from half-metallocene titanium compounds and alkylaluminum compounds. The titanium-aluminum complexes can be used as components in catalyst systems for the polymerization of olefins.

It is an object of the present invention to provide an electrolytic solution having high oxidation decomposition potential, where dissolution and deposition of magnesium proceed repeatedly and stably, using a non-nucleophilic alkoxide-type magnesium salt. The present invention relates to (1) an electrolytic solution for a magnesium battery comprising a mixture of a compound represented by the following general formula (I), a Lewis acid and a solvent: ##STR00001## (2) an electrochemical device comprising the electrolytic solution, a positive electrode and a negative electrode, and (3) a compound represented by the following general formula (I): ##STR00002##

The present application provides a preparation method for trimethyl aluminum, comprising the steps of: reacting methyl aluminum dichloride or sesquimethyl aluminium chloride or dimethyl aluminum chloride with a system of metal M and methyl chloride in the presence of catalyst and solvent to produce trimethyl aluminum and chloride of metal M; wherein the catalyst is selected from metals or their ions which rank after metallic aluminum in the electrochemical series; the metal M is selected from alkali metals, alkaline earth metals or combinations thereof. The catalyst can significantly increase the reaction rate, thus allowing the reaction to be operated under very simple experimental conditions such as near atmospheric pressure, with higher reaction yields and higher purity of the products, and without by-products of aluminum metal and unreacted alkali or alkaline earth metals in products, making the handling of the products easier.

Disclosed herein are methods for synthesizing low valence, titanium-aluminum complexes from half-metallocene titanium compounds and alkylaluminum compounds. The titanium-aluminum complexes can be used as components in catalyst systems for the polymerization of olefins.

The present invention relates to an efficient process for the manufacture of organoaluminum chlorides from dialkyl aluminum hydrides of various qualities.