Luminescent Zn and Cd coordination polymers

The hydrothermal reactions of Zn(ClO4)(2).6H(2)O and Cd(ClO4)(2).6H(2)O with 1,3-bis(2H-tetrazol-5-yl)benzene in an aqueous ethanol and an aqueous methanol/pyridine medium, respectively, yielded a 3D and a 2D metal-organic coordination framework [Zn(1,3-BTB)] (1) and [Cd(1,3-BTB)(2)(Py)(2)(H2O)(2)] [Cd[Cd(Py)(H2O)](2)(1,3-BTB)(2)] (2) (t,3-BTB = 1,3-ditetrazolylbenzene, Py = pyridine), respectively. Species I possesses an open network structure with no guest terisation of 2 shows a 2D layered framework consisting of nano-sized polytube structures which are stacked one on top of another in the (110) plane giving small channels along the b and c axes. Additionally, compounds 1 and 2 exhibit strong fluorescence at room temperature in the solid state. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).