A novel two-dimensional network self-assembled by the narrowest ladder cations [Cu(CH3COO)(bpe)(H2O)]nn+ containing the Cu2(μ-O)2 cores and the dimeric anions [Cu2(nta)2(bpe)]2− through hydrogen-bonding interaction

A novel complex [Cu(CH3COO)(bpe)(H2O)]n·n/2[Cu2(nta)2(bpe)] ·6nH2O) (bpe=trans-1,2-bis(4-pyridyl)ethylene) was synthesized and characterized. The molecule structure shows that it is composed of the ladder-like double chain cations [Cu(CH3COO)(bpe)(H2O)]nn+ and the dimeric anions [Cu2(nta)2(bpe)]2−. Through bridging oxygen atom of the acetate, the Cu2 (μ-O)2 core is formed. The ladder-like chain cation is the narrowest ladder [3.422(3) Å]. Two-dimensional undulating network is constructed by the cations and the dimeric anions through hydrogen-bonding interactions.