discrete water hexamer with a new planar tetrameric water moiety trapped in the crystal host of [Ag(azelate)(4,4′-bipyridine)]·(H₂O)

• Published in: Journal of molecular structure Vol. 1005; no. 1-3; pp. 172 - 177
• Main Authors: Luo, Geng-Geng, Wu, Dong-Liang, Liu, Li, Xia, Jiu-Xu, Li, Dong-Xu, Dai, Jing-Cao, Xiao, Zi-Jing
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2011
• Subjects: coordination compounds; ions; silver; topology
• ISSN: 0022-2860; 1872-8014

The ultrasonic reaction of Ag₂O, bipy and H₂aze gave rise to a novel Ag(I) mixed-ligand coordination polymer, namely [Ag(aze)(bipy)]·(H₂O)₃ (1) (bipy=4,4′-bipyridine, H₂aze=azelaic acid). In 1, Ag(I) ions are linked by bipy and aze ligands to form a single two-dimensional (2D) undulated net with a (6,3) topology, incorporating Ag₆(bipy)₄(aze)₂ windows of 22.58×11.06Å based on Ag⋯Ag distances. A pair of identical 2D single nets are interconnected via π⋯π stacking and unsupported Ag⋯Ag interactions to generate a 2D double-layered net. A discrete water hexamer composed of a new planar tetrameric water ring and two pendent water molecules is perpendicularly located in each hydrophilic cavity of the 2D bilayer and acts as a ‘glue’ to assemble adjacent 2D double-layered nets into a three-dimensional (3D) structure.