Difluoroamine

Structural formula
General
Surname	Difluoroamine
other names	Fluorimide Imine fluoride
Molecular formula	HNF 2
Brief description	colorless gas
External identifiers / databases
CAS number 10405-27-3 PubChem 25242 Wikidata Q1224560
properties
Molar mass	53.01 g mol −1
Physical state	gaseous
density	1.424 g cm −3
Melting point	−116.4 ° C
boiling point	−23.6 ° C
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Difluoramine is a chemical compound from the group of nitrogen halides .

Extraction and presentation

Difluoramine can be obtained by hydrolysis of N , N- difluorourea .

${\displaystyle \mathrm {CH_{4}N_{2}O+2\ F_{2}\longrightarrow CH_{2}F_{2}N_{2}O+2\ HF} }$

${\displaystyle \mathrm {CH_{2}F_{2}N_{2}O+2\ HF+H_{2}O\longrightarrow } }$ ${\displaystyle \mathrm {HNF_{2}+CO_{2}+NH_{4}F\cdot HF} }$

It is also possible to prepare by cleaving tetrafluorohydrazine with thiophenol .

${\displaystyle \mathrm {N_{2}F_{4}+2\ C_{6}H_{5}SH\longrightarrow 2\ NHF_{2}+C_{6}H_{5}SSC_{6}H_{5}} }$

It is also formed as a by-product in the reduction of nitrogen trifluoride with arsenic or the fluorination of urea . Just like other nitrogen halides, it is formed during the electrolysis of ammonium hydrogen difluoride .

properties

Difluoramine is an explosive colorless gas that was discovered by Otto Ruff in 1931 . It is an acid and reacts with bases to form the difluoramide ion NF ₂ ^- the molecule has a pyramidal structure with nitrogen at the top. In the presence of potassium fluoride , it decomposes into difluorodiimine and hydrogen fluoride .

Web links

• RJ Douthart, JN Keith, WK Sumida: Reactions of difluoramine with lewis acids , doi: 10.1021 / ba-1966-0054.ch014

Individual evidence

1. ^ ^{A b c d e f} A. F. Holleman , E. Wiberg , N. Wiberg : Textbook of Inorganic Chemistry . 91st – 100th, improved and greatly expanded edition. Walter de Gruyter, Berlin 1985, ISBN 3-11-007511-3 , pp. 571-576.
2. ^ Emil A. Lawton, John Q. Weber: The direct fluorination of urea: the synthesis and properties of difluoramine, J. Am. Chem. Soc., 1959, 81 (17), pp 4755-4755 doi: 10.1021 / ja01526a087 .
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
4. ↑ ^{a b} C-O. Parker, JP Freeman: Inorganic Syntheses . 2009, ISBN 978-0-470-13278-4 , pp. 307 (English, limited preview in Google Book search).