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

• Published in: Inorganic chemistry communications Vol. 48; pp. 114 - 119
• Main Authors: Uebler, Jacob W., LaDuca, Robert L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.10.2014
• Subjects: Cadmium; Coordination polymer; Crystal structure; Self-penetration; Self-penetration; Cadmium; Coordination polymer; Crystal structure
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2014.08.032

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 [Cd2(oba)2]n dimer-based (4,4) layers, featuring embedded {Cd2O2} dimers that serve as 4-connected nodes. In 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 42464 topology substantially different from a standard body centered cubic bcu net. Luminescent and thermal properties of 1 are also reported. {[Cd(oba)(4-pna)]·0.25H2O}n (1, oba=oxybisbenzoate, 4-pna=4-pyridylnicotinamide) shows a {Cd2O2} dimer-based 8-connected self-penetrated network with a 42464 topology substantially different from the body centered cubic bcu net. [Display omitted] •Cadmium coordination polymer with V-shaped oxybisbenzoate (oba) ligand•Kinked 4-pyridylnicotinamide (4-pna) hydrogen-bonding capable co-ligand•Two-fold interpenetrated [Cd2(oba)2]n dimer-based layers pillared by 4-pna•Overall 8-connected self-penetrated network with 42464 topology