A series of MOFs based on a triangular tri(4-pyridylphenyl)amine ligand combined with carboxylate or nitrate auxiliary ligands.

A series of new metal-organic frameworks (MOFs) based on a triangular tri(4-pyridylphenyl)amine (TPPA) ligand that possess novel structures and features, namely [Co2(TPPA)2(1,3-bdc)2(H2O)]n (); [Zn(TPPA)(1,3-bdc)]n (); [Zn6(TPPA)2(betc)(Hbetc)2(H2betc)(H2O)6·7H2O·2DMA]n () and [Cu(TPPA)(NO3)2(H2O)]·2H2O]n () (1,3-H2bdc = 1,3-benzenedicarboxylic acid, betc = 1,2,4,5-benzenetetracarboxylic dianhydride), have been synthesized under solvothermal conditions. In our work different MOFs were synthesized from different metal ions and in different solvents, leading to a variety of coordination modes and structures. In addition, the photochemical properties of compounds and the ligands in the solid state were studied.