Metal−Organic Framework Based on [Zn4O(COO)6] Clusters: Rare 3D Kagomé Topology and Luminescence

A 2-fold interpenetrated metal−organic framework displaying intense yellow fluorescence is constructed from [Zn4O(COO)6] clusters and a new dicarboxylate ligand bearing the fluorene chromophore fluorene-2,7-dicarboxylic acid. The [Zn4O(COO)6] secondary building unit exhibits unusual coordination features and leads to the rare 3D pillared kagomé net topology (324865).