Reactivity of SeOCl2 with titanium and zirconium tetrachlorides. The unexpected formation of a μ-oxo-bridged titanium(IV) derivative

Reactions of Chalcogen Oxide Chlorides EOCl2 (E = S, Se) with Group 5 Metal Chlorides

“…A good yield was obtained and no other products, besides those indicated were observed. In this reaction, similar to that studied by some of us in the case of zirconium [16], a redistribution of ligands occurs: SeOCl 2 is converted to [SeCl 3 ] + and SOCl 2 to SO 2 whereas chloride is redistributed between niobium-and selenium-containing species.…”

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“…Away from anions, studies have shown that oxidation of SO 2 precedes hydration (of SO 3 ) in the atmosphere -an important consideration in unravelling the complicated mechanism of SO species in such conditions. 50 Finally, metal complexes of chalcogen-oxygen ligands reported recently include yellow [{TiCl 3 (SeO-Cl 2 )} 2 (O)] 2 (in which the SeOCl 2 ligand is O-bound and the bridging oxygen originates from SeOCl 2 ), 51 [Mg(thf)(O 2 S(NPh)SO 2 )] 6 52 and [Co(salen)(SO 3 )(H 2 O)] 2 (from the reaction of SO 2 with [Co(salen)(H 2 O)OH] via an uncertain mechanism). 53 The aforementioned magnesium complex is especially interesting as it forms by the first example of a double insertion of SO 2 into a single functional group; thus there is, in effect, a twelve-fold insertion of the molecule into the starting material, [Mg(NPh)(thf)] 6 .…”

Extraction of Se(iv) and Se(vi) from aqueous HCl solution by using a diamide-containing tertiary amine

“…2145 Å). 33 The Cl − in the EHBAA·HCl complex might have a weak interaction with [SeOCl 2 ] at the outer-sphere of the Se, although the interaction was too weak to produce a peak in the EXAFS spectrum.…”