Copper complexes of 1,1-di(2-pyridyl)ethyl methyl ether: X-ray crystal structures and reactions with dioxygen

Abstract

The mixed-valence complexes [Cu^IIL¹₃][Cu^I₂I₄](L¹= di-2-pyridyl ketone), [Cu^II(HL₂)₂][Cu^I₂I₄][HL²= 1,1-di(2-pyridyl)ethanol] and [Cu^IIL³₂][Cu^I₂I⁴][L³= 1,1-di(2-pyridyl)ethyl methyl ether] have been isolated from the reactions of CuI with the respective ligands. On interactions with dioxygen the last two complexes are oxidised to [Cu^II₂L²₂I₂] and [Cu^II₂L³₂(OH)₂][Cu^II₃] respectively. The X-ray crystal structures of [Cu^IIL³₂][Cu^I₂I₄] and [Cu^II₂L³₂(OH)₂][Cu^II₃] are reported.