A chloride sulfite or sulfite chloride is a chemical compound that contains chloride and sulfite anions (SO32− Cl−). The known compounds of this type are all late transition metalsulfito complexes. Chlorine may be present as a ligand (chloro) or as an ion (chloride). The sulfito ligand can connect to the metal atom by way of an oxygen, or a sulfur atom. It can also link to the metal atom using two oxygen atoms as a bidentate ligand.
Chloride sulfites are not to be confused with the chlorosulfites, which are compounds containing the SO2Cl− ion or -SO2Cl group in organic compounds, where it is also called chlorosulfinate. The chlorosulfates also have the formula SO3Cl− as a single ion, whereas chloride sulfites have three negative charges.
The mercury complex with formula ClHgSO3− is found in the acid gas scrubbers that purify pollution from smokestacks. However it decomposes and does not capture mercury in this application.[1] This complex can form an ammonium salt: ammonium chlorosulfitomercurate(II) NH4[ClHgSO3], which decomposes over 130°C. The salt is formed from mercuric chloride and ammonium sulfite water solutions.[2]
^Senior, Constance (October 2007). "Review of the Role of Aqueous Chemistry in Mercury Removal by Acid Gas Scrubbers on Incinerator Systems". Environmental Engineering Science. 24 (8): 1129–1134. doi:10.1089/ees.2007.0105.
^ abWeil, Matthias; Breitinger, Dietrich K.; Liehr, Günther; Zürbig, Jürgen (March 2007). "Structural Investigations and Thermal Behaviour of Mercury(II) Sulfito Complexes". Zeitschrift für anorganische und allgemeine Chemie. 633 (3): 429–434. doi:10.1002/zaac.200600313.
^ abcSalib, Kamal A. R.; Abu El-Wafa, Samy M.; El-Maraghy, Salah B.; El-Sayed, Saied M. (December 1989). "Sulfitoamine Complexes of Cobalt(III)". Phosphorus, Sulfur, and Silicon and the Related Elements. 46 (3–4): 131–138. doi:10.1080/10426508909412058. ISSN1042-6507.
^ abPorai-Koshits, M. A.; Ionov, S. P.; Novozhenyuk, Z. M. (1965). "Crystal structure of some trivalent iridium compounds containing sulfite groups in the complex ion". Journal of Structural Chemistry. 6 (1): 161–162. doi:10.1007/BF00743893. ISSN0022-4766. S2CID98609854.
^ abcdefWeil, Matthias; Baumann, Stefan; Breitinger, Dietrich K. (August 2008). "Structural Studies of New Sulfito Mercurates(II) with General Formula xM [ X HgSO 3 ]middot; y Hg X 2 · zM X· n H 2 O ( M = NH 4 , K; X = Cl, Br)". Zeitschrift für anorganische und allgemeine Chemie. 634 (10): 1742–1748. doi:10.1002/zaac.200800159.