Thionyl tetrafluoride

Thionyl tetrafluoride
Ball-and-stick model of thionyl tetrafluoride	Space-filling model of thionyl tetrafluoride
Names
	IUPAC name Thionyl tetrafluoride
Identifiers
CAS Number	13709-54-1 ;
3D model (JSmol)	Interactive image;
ChemSpider	123077 ;
PubChem CID	139557;
CompTox Dashboard (EPA)	DTXSID30160060 ;
	InChI InChI=1S/F4OS/c1-6(2,3,4)5 Key: DUGWRBKBGKTKOX-UHFFFAOYSA-N ;
	SMILES O=S(F)(F)(F)F;
Properties
Chemical formula	SOF4
Appearance	colorless gas
Density	1.653−0.0036T (°C) liquid
Melting point	−99.6 °C (−147.3 °F; 173.6 K)
Boiling point	−49 °C (−56 °F; 224 K) 5090 cal/mol heat of vapourisation
Solubility in water	reaction in water
log P	7.2349−859.58/T−26275/T²
Structure
Molecular shape	distorted trigonal bipyramid
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300, H310, H314, H330
Precautionary statements	P260, P262, P264, P270, P271, P280, P284, P301+P310, P301+P330+P331, P302+P350, P303+P361+P353, P304+P340, P305+P351+P338, P310, P320, P321, P322, P330, P361, P363, P403+P233, P405, P501
Related compounds
Related oxohalides	Thionyl fluoride; Selenyl tetrafluoride
Related compounds	Phosphoryl trifluoride; pentafluorosulfur hypofluorite; sulfuryl fluoride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Thionyl tetrafluoride, also known as sulfur tetrafluoride oxide, is an inorganic compound with the formula S O F₄. It is a colorless gas.

The shape of the molecule is a distorted trigonal bipyramid, with the oxygen found on the equator. The atoms on the equator have shorter bond lengths than the fluorine atoms on the axis. The sulfur oxygen bond is 1.409Å. A S−F bond on the axis has length 1.596Å and the S−F bond on the equator has length 1.539Å. The angle between the equatorial fluorine atoms is 112.8°. The angle between axial fluorine and oxygen is 97.7°. The angle between oxygen and equatorial fluorine is 123.6° and between axial and equatorial fluorine is 85.7°.^[2] The fluorine atoms only produce one NMR line, probably because they exchange positions.^[1] It is isoelectronic with phosphorus pentafluoride.

^ ^a ^b ^c ^d Cite error: The named reference aiic was invoked but never defined (see the help page).
^ Lise Hedberg and Kenneth Hedberg "Thionyl tetrafluoride. Reanalysis of the molecular structure and resolution of the multiple model problem" the Journal of Physical Chemistry March 1982 vol 86 page 598 doi 10.1021/j100394a004 [1]

[aiic-1] Cite error: The named reference aiic was invoked but never defined (see the help page).

[2] Lise Hedberg and Kenneth Hedberg "Thionyl tetrafluoride. Reanalysis of the molecular structure and resolution of the multiple model problem" the Journal of Physical Chemistry March 1982 vol 86 page 598 doi 10.1021/j100394a004 [1]

[1]

[2]