Synthesis, crystal structure and magnetic properties of a new three-dimensional porous framework: [Gd2(BDA)3(DMF)2(H2O)4] · 2DMF

The open framework compound of [Gd2(BDA)3(DMF)2(H2O)4] · 2DMF (1), prepared by heating GdCl3 with 2,2′-bipyridyl-4,4′-dicarboxylatic acid (BDA) in mixed solvent, is constructed from BDA linking up polymeric [GdO5(DMF)(H2O)2]n tethers. The 1D channels are filled with coordinated and uncoordinated DMF molecules hydrogen bonding to terminal aqua ligands. The study of the temperature dependent magnetic susceptibilities revealed that there are ferromagnetic interactions between intra-chain GdIII atoms and weak antiferromagnetic interactions between inter-chain GdIII atoms.

Graphical abstractThe 3D framework compound of [Gd2(BDA)3(DMF)2(H2O)4] · 2DMF (1) is constructed from BDA ligands, comprising two kinds of coordination modes, linking up polymeric [GdO5(DMF)(H2O)2]n tethers, and exhibits ferromagnetic interactions between intra-chain GdIII atoms and weak antiferromagnetic interactions between inter-chain GdIII atoms.Figure optionsDownload full-size imageDownload as PowerPoint slide