September 2003 issue
Cover illustration: In this complex the sodium cation is in a square-pyramidal geometry, with the four N-donor atoms of the bis-bidentate chelating units from the ligand arranged equatorially, and with the perchlorate anion at the apical site. This is a relatively unusual example of an alkali metal complex with an open-chain N-donor chelating ligand. See Bell & Ward [Acta Cryst. E59, m787-m789].