Cooperative assembly of coexistent lanthanide–carboxylate chain and layer in a (4,6)-connected network

•A novel 3D praseodymium-organic framework was synthesized.•It contains alternately left- and right-handed lanthanide-carboxylate helical chains.•It displays a new (4,6)-connected topology.•It exhibits intense characteristic emission bands of Pr3 + ions at room temperature.

A novel 3D praseodymium metal–organic framework, [Pr2L4(H2O)2]2n·nH2O, in which the 2D layers constructed by the interweaving right- and left-handed helical lanthanide–carboxylate chains are further pillared by 1D lanthanide–carboxylate chains, has been hydrothermally synthesized employing flexible 3-(4-(carboxymethoxy) phenyl) propanoic acid (H2L) as organic ligand. Its structure presents a new (4,6)-connected topology with a Schläfli symbol of {43.63}{44.62}2{47.64.84}{48.66.8}. This complex exhibits intense characteristic emission bands of Pr3 + ions in the solid state at room temperature.

Graphical abstractA novel Pr(III) metal–organic framework, in which the 2D layers constructed by the interweaving right- and left-handed lanthanide–carboxylate helical chains are further pillared by 1D lanthanide–carboxylate chains, is reported. It is the first (4,6)-connected with {43.63}{44.62}2{47.64.84}{48.66.8} topology and exhibits intense characteristic emission bands of Pr3 + ions at room temperature.Figure optionsDownload full-size imageDownload as PowerPoint slide