Sulfur trifluoride
| Names | |
|---|---|
| Other names
sulfur(III) fluoride trifluorosulfur radical | |
| Identifiers | |
30937-38-3  | |
| Properties | |
| F3S | |
| Molar mass | 89.06 g·mol−1 |
| Related compounds | |
| Related compounds |
SF2, SF4, SF6, S2F10 |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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| Infobox references | |
Sulfur trifluoride is an inorganic chemical compound composed of one atom of sulfur and three atoms of fluorine.[1] It has the chemical formula SF3, and is 64% fluorine and 36% sulfur by mass. Sulfur trifluoride is not a stable molecule: it has an unpaired electron and is thus a radical.[2] While some radicals are stable, SF3 is not.[3]
Structure
Sulfur trifluoride is composed of one sulfur atom with three fluorine atoms surrounding it. Each fluorine is attached to the sulfur by a single covalent bond.[4] The SF3 molecule is very short-lived and its structure has not been determined experimentally. It is calculated to adopt a butterfly-shaped molecular geometry, belonging to the Cs point group.[5][6]
Ligand
SF3 is known as a ligand in the compound (Et3P)2Ir(CO)(Cl)(F)(SF3). Ir(CO)3(SF3) is also possibly stable. But other third row transition elements do not make stable complexes with SF3, instead they dissociate SF2 and form a -F complex instead.[7]
References
- ↑ http://www.caslab.com/Sulfur_trifluoride_CAS_30937-38-3
- ↑ Morton, J. R.; Preston, K. F.; Strach, S. J. (1978). "The EPR spectrum of SF3 trapped in SF3BF4 crystals". The Journal of Chemical Physics. 69 (4): 1392. doi:10.1063/1.436766.
- ↑ Deng, Jianming; Wang, Chaoyang; Li, Qian-shu; Xie, Yaoming; King, R. Bruce; Schaefer, Henry F. (2011). "Trifluorosulfane Ligand as an Analogue of the Nitrosyl Ligand: Highly Exothermic Fluorine Transfer Reactions from Sulfur to Metal in the Chemistry of SF3Metal Carbonyls of the First Row Transition Metals". Inorganic Chemistry. 50 (7): 2824–35. doi:10.1021/ic101994k. PMID 21366337.
- ↑ http://webbook.nist.gov/cgi/cbook.cgi?ID=C30937383&Mask=20
- ↑ Irikura, Karl K. (1995). "Structure and thermochemistry of sulfur fluorides SFn (n=1–5) and their ions SF+n (n=1–5)". The Journal of Chemical Physics. 102 (13): 5357. doi:10.1063/1.469263.
- ↑ Woon, David E.; Dunning, Thom H. (2009). "Theory of Hypervalency: Recoupled Pair Bonding in SFn(n= 1−6)". The Journal of Physical Chemistry A. 113 (27): 7915–26. doi:10.1021/jp901949b. PMID 19499905.
- ↑ Gao, Xiaozhen; Li, Nan; King, R. Bruce (December 2014). "Formation of Difluorosulfane Complexes of the Third Row Transition Metals by Sulfur-to-Metal Fluorine Migration in Trifluorosulfane Metal Complexes: The Anomaly of Trifluorosulfane Iridium Tricarbonyl". Inorganic Chemistry. 53 (23): 12635–12642. doi:10.1021/ic502375q.