Poly[(μ3-5-bromonicotinato)(5-bromonicotinato)copper(II)]

• Main Authors: Jun Yang, Hong-Ji Chen
• Format: Article
• Language: English
• Published: International Union of Crystallography 2009-10-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536809038331

The title coordination polymer, [Cu(C6H3BrNO2)2]n, is composed of two structurally similar two-dimensional coordination polymers (twin layers). Both of them have the same chemical composition but they display different bond lengths and angles. In each layer, two N atoms and four carboxylate O atoms from the bridging 5-bromonicotinate ligands and four carboxylate O atoms from the terminal 5-bromonicotinate ligands bind to two CuII atoms to form a dinuclear paddle-wheel-like pattern. Adjacent paddle wheels are further linked by bridging 5-bromonicotinate groups to generate a two-dimensional coordination polymer; neighboring twin-like layers are finally stacked through π–π stacking interactions between adjacent pyridine rings [perpendicular distance of 3.626 (2) Å] in a `sandwich' manner, thus generating a three-dimensional supramolecular structure.