Monofluoroamine

Structural formula
General
Surname	Monofluoroamine
other names	Fluoramine
Molecular formula	NH 2 F
Brief description	unstable gas
External identifiers / databases
CAS number 15861-05-9 PubChem 139987 ChemSpider 123451 Wikidata Q5462868
properties
Molar mass	35.02 g mol −1
Physical state	gaseous
density	1.431 g l −1
Melting point	−100 ° C
boiling point	−77 ° C
solubility	soluble in water
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 .

Monofluoramine , NH ₂ F, is a colorless, decomposable gas with a melting point of around −100 ° C. It was first synthesized in 1988 by Rolf Minkwitz .

The monofluoramine has a pyramidal structure and C s symmetry. It already decomposes at around −100 ° C:

${\displaystyle \mathrm {3\ NH_{2}F\longrightarrow NH_{4}F+2\ HF+N_{2}} }$

The decomposition takes place in the same way as dichloramine .

Analogous to monochloramine , monofluoramine is a strong aminating agent:

${\displaystyle \mathrm {NH_{2}F+Cl^{-}\longrightarrow NH_{2}Cl+F^{-}} }$

Monofluoramine is a weak base and forms HX salts of the form NH ₃ F ⁺ X ^- with strong acids , whereby the NH ₃ F ^{+ is} referred to as the fluorammonium ion.

The synthesis takes place in a high vacuum from the hydrofluoric acid salt NH ₃ F ⁺ HF ₂ ^- . This is evaporated and passed over potassium fluoride powder. The HF is absorbed. The monofluoroamine can be condensed and isolated as a colorless solid in liquid nitrogen .

literature

• AF Holleman , N. Wiberg : Inorganic Chemistry . 103rd edition. Volume 1: Basics and main group elements. Walter de Gruyter, Berlin / Boston 2016, ISBN 978-3-11-049585-0 , p. 790 (reading sample: Part A - Basics of the chemistry of hydrogen. Google book search ).

Individual evidence

1. ^ ^{A b c} William M. Haynes: CRC Handbook of Chemistry and Physics . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 63 ( limited preview in Google Book search).
2. ↑ ^{a b} Gurdeep Ra: Advanced Inorganic Chemistry: Volume II . 12th edition. Krishna Prakashan Media, 2010, ISBN 978-81-8283-776-8 , pp. 162 ( limited preview in Google Book search).
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. ↑ Rolf Minkwitz, Rüdiger Naß: Presentation and Properties of Monofluoramine, H ₂ NF / Preparation and Properties of Monofluoramine, H ₂ NF. In: Zeitschrift für Naturforschung B. 43, 1988, p. 1478, doi: 10.1515 / znb-1988-1114 .
5. ^ ^{A b} Holleman / Wiberg: Basics and main group elements . Walter de Gruyter GmbH & Co KG, 2016, ISBN 978-3-11-049585-0 , p. 790 ( limited preview in Google Book search).