The Interaction of Cu(II) and Ni(II) with Oxygen-Nitrogen Mixed Donor Macrocycles Containing Crown Ether Moieties

Abstract

3,4:9,10-Dibenzo-13,14-benzo(15-crown-5)-1,12-diaza-5,8-dioxacyclotetradecane [L²] has been synthesized from 3,4:9,10-dibenzo-13,14-benzo(15-crown-5)-1,12-diaza-5,8-dioxacyclotetradecane-1,11-diene [L¹] wich has synthesized by treating 1,4-bis(2′-formylphenyl)-1,4-dioxabutane with 4′,5′-diaminobenzo(15-crown-5). The interaction of Cu(II), Ni(II) and Co(II) ions with the following macrocycles [L²] and [L¹], each containing a N₂O₂ donor set, has been investigated. Physical measurements indicate that these rings from 1:1 complexes with the mentioned transition metal ions. Structures of the new macrocycles and their transition metal complexes are proposed based on elemental analyses, ¹H, ¹³C NMR, IR, UV-VIS, mass spectra, magnetic susseptibility, and conductivity data.