Silver (II) fluorosulfonate

Crystal structure
	No drawing available
Crystal system	monoclinic
Space group	P 2 1 / c (No. 14)
Lattice parameters	a = 10.5130 Å ; b = 7.7524 Å; c = 8.9366 Å; β = 117.867 °;
General
Surname	Silver (II) fluorosulfonate
other names	Silver (II) fluorosulfate; Silver difluorosulfonate;
Ratio formula	Ag (SO 3 F) 2
Brief description	dark brown crystals
External identifiers / databases
Wikidata	Q65082555
properties
Molar mass	305.99 g mol −1
Physical state	firmly
density	3.15 g cm −3
Melting point	decomposes at room temperature
safety instructions
GHS hazard labeling ; no classification available
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 .

Silver (II) fluorosulfonate , Ag (SO ₃ F) ₂ is the divalent and unstable silver salt of fluorosulfonic acid . This is a fluorine- substituted form of sulfuric acid , which makes it very reactive.

Extraction and presentation

The salt can be made from silver and peroxydisulfuryl difluoride .

${\ displaystyle \ mathrm {Ag + S_ {2} O_ {6} F_ {2} {\ xrightarrow [{7days}] {70C}}}}$ ${\ displaystyle \ mathrm {Ag (SO_ {3} F) _ {2}}}$

properties

Silver (II) fluorosulfonate is unstable and decomposes to Ag ₃ (SO ₃ F) ₄ even at room temperature . The decomposition takes place more quickly at higher temperatures, so that at 120 ° C the fluorosulfonate radical SO ₃ F ^{• is} released. Silver (II) fluorosulfonate has magnetic moments that are parallel at low temperatures and are therefore ferromagnetic : the Curie temperature is 24.8 K (−248.35 ° C), above which the compound shows paramagnetism .

The connection shows a monoclinic crystal system with the space group P 2 ₁ / c (space group no. 14) . The lattice parameters are a = 10.5130 Å , b = 7.7524 Å and c = 8.9366 Å. The silver ions are coordinated only by the oxygen atoms of the fluorosulfonic acid groups, namely sixfold by an octahedron that is elongated by a Jahn-Teller distortion . The fluorosulfonic acid groups link the silver ions with the short bonds to form corrugated layers, similar to a sublattice of silver (II) fluoride AgF ₂ , which are interconnected by the long bond. Template: room group / 14

Individual evidence

↑ ^a ^b ^c ^d ^e Przemysław J. Malinowski, Mariana Derzsi, Zoran Mazej, Zvonko Jagličić, Piotr J. Leszczyński, Tomasz Michałowski, Wojciech Grochala: Silver (II) Fluorosulfate: A Thermally Fragile Ferromagnetic Derivative of Divalent Silver in an Oxa-Ligand Environment . April 2011, doi : 10.1002 / ejic.201100077 .
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ PCLeung, F.Aubke: Silver (II) fluorosulfate . In: Inorganic and Nuclear Chemistry Letters . March 1977, p. 263-266 , doi : 10.1016 / 0020-1650 (77) 80105-0 .

[Silver(II)_Fluorosulfate-1] Przemysław J. Malinowski, Mariana Derzsi, Zoran Mazej, Zvonko Jagličić, Piotr J. Leszczyński, Tomasz Michałowski, Wojciech Grochala: Silver (II) Fluorosulfate: A Thermally Fragile Ferromagnetic Derivative of Divalent Silver in an Oxa-Ligand Environment . April 2011, doi : 10.1002 / ejic.201100077 .

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[3] PCLeung, F.Aubke: Silver (II) fluorosulfate . In: Inorganic and Nuclear Chemistry Letters . March 1977, p. 263-266 , doi : 10.1016 / 0020-1650 (77) 80105-0 .