Coordination polymers derived from alkali metal complexes of redox-active ligands

Abstract

Treatment of toluene solutions of (dpp-bian)M (dpp-bian = 1,2-bis[(2,6-diisopropylphenyl)imino]acenaphthene; M = Li, Na, K) with 4,4′-bipyridine (4,4′-bipy) affords coordination polymers [(dpp-bian)Li(4,4′-bipy)]_n (1), [(dpp-bian)Na(4,4′-bipy)₂]_n (2) and [(dpp-bian)K(4,4′-bipy)]_n (3). Compounds 1–3 have been characterized by elemental analysis and thermogravimetry (TGA) as well as IR, UV-vis and ESR spectroscopy. According to single crystal X-ray analysis, products 1 and 2 present 1D coordination polymers, while product 3 reveals a 2D architecture.