Structural Influence of the Ligand Geometry on Construction of Coordination Polymers Formed from Silver(I) Chloride Ribbons and Bipodal Nitrogen Donor Ligands |
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Authors: | Safaa El-din H Etaiw Ahmed S Badr El-din |
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Affiliation: | (1) Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt |
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Abstract: | 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 {Ag2(μ3-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. |
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