Boron trifluoride

Boron Trifluoride(Ms. Ho or Ho !,: boron trifluoride) is represented by the chemical formula BF 3. It is yellowish white and toxic gas. And the complex is used as a liquid. And is an equilateral triangular planar molecule centered at the center. It is nonflammable. Attacks the eyes and mucous membranes. It is designated as a poison by the Poisonous and Deleterious Substitution Control Law.

Boron trifluoride - - | Identification information |, (Dihydrate) | | | 231-569-5 Number | ED2275000

• FB (F) F

• InChI = 1 S / BF 3 / c 2 - 1 (3) 4 Key: WTEOIRVLGSZEPR-UHFFFAOYSA-N

InChI = 1 / BF 3 / c 2 - 1 (3) 4 Key: WTEOIRVLGSZEPR - UHFFFAOYAW

Characteristic | BF 3 | 67.82 g / mol (anhydrate) 103.837 g / mol (dihydrate) Appearance | Colorless gas (anhydrate) Colorless liquid (dihydrate) | 0.00276 g / cm 3 (anhydrate gas) 1.64 g / cm @ 3 (dihydrate) |

-126.8 ° C

|

-100.3 ° C

Easy to dissolve | ,,,, Risk Very toxic (T +) Corrosivity (C) EU Index | 005-001-00-X |

0

Four

1

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|,, |,,,,, | non-flammable Related substances Related substances |

Unless otherwise specified, data is at (25 ° C) · (100 kPa).

table of contents

Overview

It is corrosive. It is corroded in the presence of water vapor, etc. used in experimental instruments. Reacts with but does not corrode. In the case of using an experimental apparatus for experiments using boron trifluoride, reacting with ordinary type reactors, it is necessary to use those of the system.

Although the covalent bond of boron trifluoride is strongly polarized, the molecule itself is non-polar. This is because the boron atom takes an sp2 orbital and the molecule is three-fold symmetric. Boron is and acts as a Lewis acid in chemical reactions. For example react with fluoride to produce.

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Unlike other boron halides, when hydrolyzed (HBF 4) . Other halides can not become quaternary salts because halogen is considerably larger than boron and steric hindrance is too large. Because fluoroboric acid is very acidic, it may be used to isolate other ions such as. This is one of the few isolation methods of ions. The reaction that the salt of diazonium ion and tetrafluoroborate ion decomposes to allyl fluoride, nitrogen, boron trifluoride is an important reaction at the laboratory level.

Boron trifluoride tends to form a complex with ammonia or the like. Especially diethyl ether makes possible as stable as possible, and it is also marketed in this form. It is widely used in the field as a Lewis acid catalyst.

Use

Use as in Used as a dopant when becoming it Compound with unsaturated bond Certain isomerization and catalysts such as … * High sensitivity neutron detector

References

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External link

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Post Date : 2018-03-02 03:00

This article is taken from the Japanese Wikipedia Boron trifluoride

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