nleslie321
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BBr3 synthesis
Has anyone tried the BBr3 synthesis from BF3 and AlBr3? Im wanting to try it and just wanted to know if its a viable route and decent yield.
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draculic acid69
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Do u really feel confident handling a dangerous corrosive chemical like BF3?
Then another one such as bbr3? Do u know what flourine compounds do if spilled on skin? If not Google these Chems and see if the MSDS of them doesn't
change your mind.
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Texium
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Thread Moved
3-2-2020 at 09:19 |
woelen
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BBr3 can be handled at a home lab. It is not very pleasant, and is heavily fuming (formation of H3BO3 and HBr in contact with moisture from air), but
when working outside or in a fume hood you can work with it. I myself have some BBr3 and other similarly fuming chemicals (SnCl4 and TiCl4).
BF3 indeed is going one step too far for me. It is a gas and it is hydrolysed by water to form HF. When there is sufficient water, then the HF and
excess BF3 dissolve in it, forming the acid HBF4, which is quite stable in water, as H3O(+) and BF4(-). But still, working with fumes of HF is not
something I want to do in my home lab.
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Tsjerk
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BF3 in THF is quite fine. It forms an adduct. As long you don't throw in water or an acid you won't produce HF. But if you don't know how to exclude
water you shouldn't use BF3.THF.
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DavidJR
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If you have a Schlenk line etc then it's no trouble at all.
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Tsjerk
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Don't start shitty stories again. An inert atmosphere is not the same as a Schlenk line. You only need a bit of nitrogen, if even.
Attachment: 10.1.1.509.7598 (1) (1).pdf (134kB)
This file has been downloaded 370 times
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DavidJR
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Quote: Originally posted by Tsjerk  | Don't start shitty stories again. An inert atmosphere is not the same as a Schlenk line. You only need a bit of nitrogen, if even.
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I'm actually really quite confused by what you are trying to say here.
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draculic acid69
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If u r really deadset on producing bbr3 buy or make elemental boron and get a quartz tube heat it up with the boron in it and bubble br2 thru it.
Bromic acids book has something about making boron trihalides using sodium halides I think.
Someone mentioned bubbling dry HCL thru molten borax somewhere.
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