Molecular tectonics: generation of 1- and 2-D copper coordination networks by positional isomeric tectons based on a phenylenediamine backbone bearing two isonicotinoyl moieties

The combination of three isomeric organic tectons 1 - 3 based on 1,2-, 1,3- and 1,4-phenylenediamine backbones bearing two isonicotinoyl groups with a Cu(OAc)(2) neutral complex leads to the formation of 1-D and 2-D coordination networks. Whereas for both tectons 1 and 2 the network is generated through the interconnection of the organic moieties by copper dimers of the paddle-wheel type, in the case of 3, the 2-D network is formed by another type of connector, a binuclear copper complex for which the two metal centres adopt an octahedral coordination geometry.