Syntheses and structures of three zinc coordination polymers with 1-D zigzag chain, double chain, and triple chain.

Three new coordination polymers [Zn(btp)(NCS)2]n (1), {[Zn(btp)2(dca)2]n (2), and {[Zn(btp)3](BF4)2}n (3) (btp = 1,3-bis(1,2,4-triazol-1-yl)propane, dca = dicyanamide) were synthesized and characterized. In 1, 2, and 3, one-, double-, triple-btp ligands link two Zn(II) atoms and extend to form a 1-D zigzag chain for 1, 1-D double chain for 2, and 1-D triple chain for 3. The conformations of the btp ligands in 1, 2, and 3 are analyzed. 1, 2, and 3 have emission maxima at approximately 405, 407, and 409 nm, respectively, in the solid state at room temperature. [ABSTRACT FROM AUTHOR]