1,8-Naphthalenediylbis(dichloroborane) chloride: the first bis boron chloride chelate

1987 ◽  
Vol 6 (5) ◽  
pp. 1134-1136 ◽  
Author(s):  
Howard Edan. Katz
Keyword(s):  
Boron Chloride

Boron Chloride and Bromide

2007 ◽  
pp. 27-30 ◽  
Author(s):  
E. Lee Gamble ◽  
Harold S. Booth ◽  
Harold Halbedel
Keyword(s):  
Boron Chloride

scholarly journals Beiträge zur Chemie des Bors, 148. Diamidobor(1+)-Kationen aus Bis(amino)borhalogeniden durch Halogenid-Abspaltung/ Contributions to the Chemistry of Boron, 148.Diamidobor(1+) Cations from Bis(amino)borhalogenides by Halide Abstraction

1984 ◽  
Vol 39 (8) ◽  
pp. 1058-1068 ◽  
Author(s):  
Heinrich Nöth ◽  
Bernhard Rasthofer ◽  
Siegfried Weber
Keyword(s):  
Halogen Bond ◽  
Boron Fluoride ◽  
Boron Halides ◽  
Boron Chloride

Abstract Bis(amido)boron(1 + ) cations can be generated from bis(amino)-boron halides and an appropriate halide acceptor. The ease of formation of the diethylamido-2.2.6.6-tetramethylpiperidinoboron-( 1 + ) cation 5 from diethylamino-tetramethylpiperidino-boron halides has been studied and found to increase with decreasing strenght of the boron halogen bond. In the case of bis(2.2.6.6- tetramethyl-piperidino)boron fluoride AlCl3, BCl3, BBr3 and even BF3 give access to salts of the bis(tetramethylpiperidino)boron-(1+ ) cation. The tetrabromoborate salt 7c reacts with Ag-triflate to yield the corresponding tetratriflatoborate 7g. Similarly. bis(tetramethylpiperidino)boron chloride 8 , obtained from the tetrachloroborate 7b in boiling pyridine, readily gives bis(tetramethylpiperidino) boron(1 + )-tetrachlorometalates. Bis(tetramethylpiperidino)boron(1 + )-triflate is formed by reaction of 8 with AgOSO2CF3.

Removal of Boron from Metallurgical Grade Silicon by Chloride Molten Salt

2013 ◽  
Vol 634-638 ◽  
pp. 3084-3087
Author(s):  
Bin Jie Jia ◽  
Ji Jun Wu ◽  
Wen Hui Ma ◽  
Yan Long Li
Keyword(s):  
Molten Salt ◽  
Thermodynamic Analysis ◽  
Boron Content ◽  
Induction Furnace ◽  
Solar Grade Silicon ◽  
Medium Frequency ◽  
Metallurgical Grade Silicon ◽  
Grade Silicon ◽  
Refining Time ◽  
Boron Chloride

Removal of boron is one of the greatest barriers in the process of upgrading metallurgical grade silicon (MG-Si) to solar grade silicon (SoG-Si). In this work, a chloride molten salt was used as a new refining reagent for removal of boron from MG-Si. The theoretical supporting for chloride molten salt refining was studied by the thermodynamic analysis at first, which testified that boron could be volatilized and removed from MG-Si melt by generating the gaseous boron chloride species. Then the experiments for the removal of boron were carried out using the chloride molten salt with the different conditions of refining time and the ratio of chloride molten salt to MG-Si. The results showed that the boron content in refined silicon was successfully reduced from 22.0×10-6 to 3.0×10-6 in a medium frequency induction furnace at 1695 K for 2h.

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