Self-assembly and characterization of three-dimensional silver(I) coordination polymers containing N,N,N′,N′-tetrakis(pyridin-4-yl) methanediamine

Silver(I) coordination polymers, [Ag(tpmd)](NO₃)·2CH₃OH (1), [Ag(tpmd)](CF₃SO₃) (2), and [Ag(tpmd)] (CF₃CO₂)·0.5CH₃OH (3), have been obtained by the self-assembly of AgX (X = NO₃^-, CF₃SO₃^-, CF₃CO₂^-) and N,N,N′,N′-tetrakis(pyridin-4-yl)methanediamine (tpmd) in MeOH/MeCN. The coordination geometries of silver(I) ions in 1 and 2 are distorted tetrahedral structures, while that of 3 is a distorted trigonal bipyramid. 1 and 2 feature three-dimensional coordination polymers formed by coordination of the silver(I) ions to the tpmd ligands. 3 shows two-dimensional network basically. However, the network of 3 can be considered three-dimensional structure by the weak axial bonding of the fourth pyridine group from another tpmd ligand. 1-3 display strong emissions at 331, 342, and 326 nm, respectively.