An unprecedented three-dimensional network cadmium coordination polymer containing isonicotinato N-oxido ligand with strong yellow fluorescent emission

The first isonicotinato N-oxido (N-inicO) ligand bridging cadmium three-dim ensional network coordination polymer, [Cd(N-inicO)(2)] (.) (H2O)(2) 1. was synthesized using the precursor of N-inicO ligand, 1-oxide-4-cyanopyridine under hydrothermal conditions. The oxygen atom of N-oxido in N-inicO adopt s a bidentate-bridging mode to connect with Cd to form a three-dimensional network with porous structure in which water molecules are included in the cavity. The bridging mode of N-inicO ligand is, to the best of our knowledg e, unprecedented in the known any metal complexes containing the N-inicO li gand. (C) 2001 Elsevier Science B.V. All rights reserved.