Synthesis and structural characterization of a novel homo-binuclear complex [Cu(dinemac)(H₂O)₂][Cu(dipic)₂] .3H₂O: Assembly of discrete cationic and anionic components in a 1D chain through H bonding

Abstract

This work describes the synthesis and structural characterization of a novel homo-binuclear coppcr(II) complex [Cu(dinemac)(H₂O)₂] [Cu(dipic)₂].3H₂O (<b>1</b>), in which the macrocylic cationic modules are assembled with the anionic components through H bonding. The X-ray siructural analysis indicates that the central atoms Cu(<b>1</b>) and Cu(<b>2</b>) of the two independent cations lic on crystallographic centers of symmetry and that the independent anion with its central atom Cuʹ is sited at a general position. The asymmetric unit of <b>1</b> consists of two halves of [Cu(dinemac)(H₂O)₂]²⁺ cations, a [Cu(dipic)₂]^2- anion and three water molecules. The room temperature solid state EPR spectrum of the polycrystalline sample is typical for a non-distorted or exchange averaged mononuclear Cu(II) complex with <i>g_av=</i>2.146±0.005<i> </i>and Δ<i>H</i>_pp<i>=</i>9.5 mT.