Halides of Sulphur
Sulphur hexaflouride (SF6) and Sulfur tetrafluoride (SF4)
Sulphur forms a number of halides in which the oxidation state of sulphur are +1, +2, +4 and +6. The well known halides are
S2X2 (X=F,Cl,Br or I) = oxidation state of S is +1
SX2 (X=F or Cl) = oxidation state of S is +2
Sulphur hexaflouride (SF6)
The oxidation state of Sulphur (s) in Sulphur hexaflouride (SF6) is +6.
Sulphur hexaflouride (SF6) is prepared by direct combination of Sulphur (S) and Flourine (F).
1/8 S8 + 3F2 -----------> SF6
Sulphur hexaflouride (SF6) has octahedral shape. Sulphur atom is Sp3d2 hybridised.
Sulfur tetrafluoride (SF4)
Sulfur tetrafluoride (SF4) is prepared by fluorination of SCl2 with NaF
3SCl2 + 4 NaF ------------> S2Cl2 + SF4 + 4 NaCl
Sulphur atom is Sp3d hybridized in SF4 and possess triagonal bipyramidal geometry with one corner is occupied by a lone pair of electrons.
Sulfur dichloride (SCl2)
Sulfur dichloride (SCl2) is formed by saturating S2l2 with chlorine at ordinary temperature.
S2Cl2 + Cl2 -------------> 2SCl2
In Sulfur dichloride (SCl2), sulphur atom is Sp3 hybridised and has angular structure.
Sulphur monochloride (S2Cl2)
Sulphur monochloride (S2Cl2) is also prepared by direct combination of liquid sulphur and chlorine.
1/4 S8 + Cl2 ----------> S2Cl2
The electron diffraction studies have shown a non planer structure for S2Cl2 which is similar to that of H2O2.
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