Interlinked molecular squares with [Cu(2,2′-bipy)]2+ corners generating a three-dimensional network of unprecedented topological type

Abstract

A noteworthy three-dimensional framework, obtained by reacting the preformed molecular corner [Cu(2,2′-bipy)]²⁺ (with BF₄⁻ counter ions) and 1,2-bis(4-pyridyl)ethane (bpetha) in the presence of chlorides, contains molecular square units [Cu(2,2′-bipy)(bpetha)]₄ that are linked via chloride bridges into a triconnected architecture of unprecedented topology.