Cadmium Metal-Directed Three-Dimensional Coordination Polymers: In Situ Tetrazole Ligand Synthesis, Structures, and Luminescent Properties

Seven three-dimensional (3D) cadmium coordination frameworks, {[Cd(5MT)(2)] (1a); [Cd-5(N-3)(5MT)(9)center dot 0.12H(2)O] (1b); [Cd-3(OH)Cl-1.39(N-3)(0.61)(5MT)(3)] (1c), 5MT = 5-methyl-tetrazole}; {[Cd-3(OH)Cl(N-3)(5AT)(3) (2a); Cd-2(OH)Br(5AT)(2) (2b), 5AT = 5-amino-tetrazole]}; {[Cd7Cl2(5BT)(12)(H2O)(2) (3a); and [Cd7Br2(5BT)(12)(H2O)(2) (3b), 5BT = 5-butyltetrazole], were obtained through in situ tetrazole synthesis and have been structurally characterized by elemental analyses, Fourier transform infrared spectroscopy, thermal studies. and single crystal and powder X-ray diffraction. Compounds la and 1b were constructed by the interconnection of 5MT and cadmium metal ions, kind both exhibited distinct topological nets: la has a diamond-like framework, while 1b has the acs topological net. Compounds le and 2a represented similar structural network motifs; both were intricate coordination polymers constructed from interconnected {ClCd3O} subnets through tetrazole anions. Compound 2b was constructed From two-dimensional (2D) wavelike {BrCd3O} layers bridged by 5AT anions. Compounds 3a and 3b were structural isomorphs, constructed from 2D Cd-5BT wheel layers and halogen linkers. Furthermore, the luminescent properties of these complexes were investigated.