Oxidative addition of disulfide/diselenide to group 10 metal(0) and in situ functionalization to form neutral thiasalen/selenasalen group 10 metal(ii) complexes

Abstract

Three components, one pot synthesis of thiasalen/selenasalen Ni(II), Pd(II) and Pt(II) complexes, 14–19, by the oxidative addition of S–S/Se–Se bond of bis(o-formylphenyl)disulfide/-diselenide to Ni(0), Pd(0) and Pt(0) followed by in situ Schiff base formation with ethylenediamine is reported. S–S or Se–Se bonds were cleaved and coordinated to the metal center as thiolate (ArS⁻) or selenolate (ArSe⁻) while the formal oxidation state of metal centers was changed from ‘0’ to ‘+2’. The disulfide/diselenide reacted with zero-valent metals at room temperature to give only the monometallic complexes. All complexes (except Pd–thiolate complex 15) were studied by single crystal X-ray crystallography and revealed the square planar geometry around metal centers.