Tellurium hexafluoride

Tellurium hexafluoride
Structure and dimensions of the molecule	Ball-and-stick model of the molelcule
Identifiers
CAS Number	7783-80-4 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.029.115
EC Number	232-027-0;
PubChem CID	24559;
UNII	JWI7143IXR ;
CompTox Dashboard (EPA)	DTXSID20893077 ;
	InChI InChI=1S/F6Te/c1-7(2,3,4,5)6;
	SMILES F[Te](F)(F)(F)(F)F;
Properties
Chemical formula	TeF6
Molar mass	241.590 g/mol
Appearance	colorless gas
Odor	repulsive odor
Density	0.0106 g/cm3 (-10 °C) ; 4.006 g/cm3 (-191 °C)
Melting point	−38.9 °C (−38.0 °F; 234.2 K)
Boiling point	−37.6 °C (−35.7 °F; 235.6 K)
Solubility in water	decomposes
Vapor pressure	>1 atm (20°C)
Magnetic susceptibility (χ)	−66.0·10−6 cm3/mol
Refractive index (nD)	1.0009
Structure
Crystal structure	Orthorhombic, oP28
Space group	Pnma, No. 62
Coordination geometry	octahedral (Oh)
Dipole moment	0
Thermochemistry
Heat capacity (C)	117.6 J/(mol K)
Std enthalpy of; formation (ΔfH⦵298)	-1318 kJ/mol
Hazards
	Lethal dose or concentration (LD, LC):
LCLo (lowest published)	5 ppm (rat, 4 hr); 5 ppm (mouse, 1 hr); 5 ppm (rabbit, 4 hr); 5 ppm (guinea pig, 4 hr)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.02 ppm (0.2 mg/m3)
REL (Recommended)	TWA 0.02 ppm (0.2 mg/m3)
IDLH (Immediate danger)	1 ppm
	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

Tellurium hexafluoride is the inorganic compound of tellurium and fluorine with the chemical formula TeF₆. It is a colorless, highly toxic gas with an unpleasant odor.^[4]

^ ^a ^b ^c ^d NIOSH Pocket Guide to Chemical Hazards. "#0588". National Institute for Occupational Safety and Health (NIOSH).
^ ^a ^b CRC Handbook of Chemistry and Physics, 90. Auflage, CRC Press, Boca Raton, Florida, 2009, ISBN 978-1-4200-9084-0, Section 4, Physical Constants of Inorganic Compounds, p. 4-95.
^ "Tellurium hexafluoride (as Te)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
^ W. Kwasnik (1963). "Tellurium Hexafluoride". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 1. NY, NY: Academic Press. p. 180.

[PGCH-1] NIOSH Pocket Guide to Chemical Hazards. "#0588". National Institute for Occupational Safety and Health (NIOSH).

[CRC_HANDBOOK-2] CRC Handbook of Chemistry and Physics, 90. Auflage, CRC Press, Boca Raton, Florida, 2009, ISBN 978-1-4200-9084-0, Section 4, Physical Constants of Inorganic Compounds, p. 4-95.

[3] "Tellurium hexafluoride (as Te)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

[Brauer-4] W. Kwasnik (1963). "Tellurium Hexafluoride". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. Vol. 1. NY, NY: Academic Press. p. 180.

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