Synthesis and Characterization of Metal Mono (Chlorosulphates) M(SO₃CL) [M = Ag(I) and Hg(I)] and Their Complexes with Organic Donor Bases

Abstract

The solvolytic reaction of silver(I) acetate and mercury(I) chloride in chlorosulphuric acid afforded Ag(SO₃Cl) and Hg₂(SO₃Cl)₂, respectively, where HSO₃Cl acts both as medium of reaction as well as chlorosulphonating agent. These compounds are hygroscopic in nature and dissolve in non-polar solvents. The coordinating ability of the SO₃Cl⁻ group has been further investigated by synthesizing the complexes of these metal monochlorosul phates with strong donor organic bases leading to the formation of complexes of the types [M(SO₃Cl)L₃] [L = triphenylphosphine, pyridine, pyridine N-oxide] and [M(SO₃Cl)L] [L = 2,2′-bipyridine, acridine]. The SO₃Cl⁻ group has been found to be covalently bonded to the metal ions or the complex cations [ML_n]⁺ as evidenced by the shift to higher frequency of ν₁(A), splitting of doubly degenerate (E) modes and low values of electrical conductivities. The magnetic moment measurements indicate their diamagnetic nature.

Referee I: J. A. Heppert

Referee II: G. C. Defotis

Notes

Referee I: J. A. Heppert

Referee II: G. C. Defotis