Intermetal oxygen, sulfur, and selenium atom transfer reactions involving titanium porphyrin complexes

Abstract

The reaction of (octaethylporphyrinato) titanium (IV) perchalcogenido complexes (OEP)Ti([eta][sup 2]-X[sub 2])(X = O,S,Se) with (tetratolylporphyrinato)titanium(II) acetylene complexes (TTP)Ti([eta][sup 2]-PhC[triple bond]CPh) or (TTP)Ti([eta][sup 2]-EtC[triple bond]CEt) in C[sub 6]D[sub 6] results in oxygen, sulfur, or selenium atom transfer processes which produce (TTP)Ti[double bond]X and (OEP)Ti[double bond]X. These reactions are formally two-electron processes in which X-X bond cleavage has occurred and [eta][sup 2]-X[sub 2][sup 2][sup [minus]] is reduced to 2 X[sup 2][sup [minus]] and Ti(II) is oxidized to Ti(IV).