A cadmium oxybisbenzoate/pyridylnicotinamide coordination polymer with a new 8-connected self-penetrated topology

摘要

Crystals of {[Cd(oba)(4-pna)]·0.25H2O}_n (1, oba = oxybisbenzoate, 4-pna = 4-pyridylnicotinamide) were prepared by hydrothermal methods. A single-crystal structure determination showed the presence of two-fold interpenetrated ICd2(oba)2]_n dimer-based (4,4) layers, featuring embedded {Cd2O2} dimers that serve as 4-connected nodes, to turn these layers are connected by the dipodal 4-pna ligands into a [Cd(oba) (4-pna) ]_n 3-D coordination polymer network, including these connections, the {Cd2O2} dimers can be considered as 8-connected nodes; these build a new but simple self-penetrated network with a 4~~(24)6~4 topology substantially different from a standard body centered cubic bcu net Luminescent and thermal properties of 1 are also reported.