The 3D CuO (tenorite) as copper-ion source afforded the first 1,4-naphthalenedicarboxylate bridged coordination dimmer linked via triple-hydrogen-bonding water molecule into a 2D network

The reaction of three-dimensional (3D) CuO (tenorite) with 1,4-naphthalenedicarboxylic acid and 2,2′-dipyridylamine under hydrothermal conditions produced the first 1,4-naphthalenedicarboxylate bridged coordination dimmer linked via hydrogen-bonding water molecule into a two-dimensional (2D) network structure. Instead of using simple inorganic salts, the 3D solid-state CuO was used as the copper-ion source for the reaction. The hydrogen-bonding water molecules in the network structure were completely lost below 250 °C and the dimmer was decomposed from 250 to 310 °C.