Structural Influence of the Ligand Geometry on Construction of Coordination Polymers Formed from Silver(I) Chloride Ribbons and Bipodal Nitrogen Donor Ligands

• Published in: Journal of inorganic and organometallic polymers and materials 2010-12, Vol.20 (4), p.684-691
• Main Authors: Etaiw, Safaa El-din H., Badr El-din, Ahmed S.
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Chlorides; Coordination polymers; Electronics; Fluorescence; Inorganic Chemistry; Ligands; Networks; Organic Chemistry; Polymer Sciences; Ribbons; Stacking
• ISSN: 1574-1443; 1574-1451
• DOI: 10.1007/s10904-010-9366-5

An assembly of adducts of silver nitrate and KCl and bipodal nitrogen donor ligands, 4,4′-bipyridine (bpy), trans-1,2-bis(4-pyridyl)ethylene (tbpe) or 1,2-bis(4-pyridyl)ethane (bpe), at room temperature affords new supramolecular coordination polymers (SCP), [AgCl·bpy] ( 1 ), [(AgCl) 2 ·tbpe] ( 2 ) and [(AgCl) 3 ·(bpe) 2 ] ( 3 ). X-ray single crystal analyses reveal that 1 – 3 have 3D-supramolecular networks composed of different types of infinite 1D-ribbons of ladder, 1 , and staircase, 2 and 3 , structures formed from fused minicyle {Ag 2 (μ 3 -Cl) 2 } motifs, which are bridged by the nitrogen donor ligands to form 2D-layers. The 2D-layers are interconnected by extensive hydrogen bonds and π–π stacking thereby creating 3D-networks. The products are also characterized by IR and electronic absorption spectra. SCP 1 – 3 display strong fluorescence in the solid state at room temperature.