Three-Dimensional Zinc(II) and Cadmium(II) Coordination Frameworks with N,N,N′,N′-Tetrakis(pyridin-4-yl)methanediamine: Structure, Photoluminescence, and Catalysis

Coordination polymer networks, i.e., [Zn-(tpmd)(H2O)](NO3)(2)center dot 7H(2)O (1) and [Cd(tpmd)(H2O)(2)](NO3)(2)center dot 4H(2)O center dot 4CH(3)OH (2), were assembled from M-II(NO3)(2) hydrates (M = Zn, Cd) and N,N,N',N'-tetrakis(pyridin-4-yl)methanediamine (tpmd) in CH3OH and characterized. 1 and 2 feature three-dimensional networks formed by coordination of the metal ions to the tpmd ligands. 1 exhibits a strong blue emission at similar to 397 nm, while 2 shows strong emission at similar to 361 nm. 1 is a more efficient catalyst for the transesterification of various esters than 2.