| Abstract: | A Three Dimensional Network of Iodide Ions and Iodine Molecules in the Crystal Structure of Pr(Benzo-15-Crown-5)2]I21 Black polyhedra of Pr(benzo-15-crown-5)2]I21 were grown from an ethanol / dichlormethane solution of PrI3, benzo-15-crown-5 and I2. The crystal structure (orthorhombic, P21cn, a = 1201.1(1), b = 2168.3(1), c = 2571.1(1) pm, Z = 4) is built up from sandwich like cations Pr(benzo-15-crown-5)2]3+ and polyiodide anions I213-. This unique polyiodide anion exhibits a complex connection pattern of iodide ions and iodine molecules with variable bond lengths forming a complicated network. |
