Add time:07/29/2019 Source:sciencedirect.com
The reactions of the polydentate ligand 1,4-bis(4,5-dihydro-2-oxazolyl)benzene (L) with AgX (X = CH3COO−, ClO4− and CF3SO3−) afforded the complexes [Ag2(L)(CH3COO)2]∞ (1), [Ag2(L)3(ClO4)2]∞ (2), and [Ag(L)(CF3SO3)]∞ (3), whereas the reaction of L with Ag2SO4 in MeOH/H2O system afforded {[Ag2(L)3(H2O)3][SO4] · 9H2O}∞ (4). The EA and IR have been recorded and all the complexes have been structurally characterized by X-ray crystallography, confirming that complexes 1–4 are two-dimensional coordination polymeric frameworks. The bidentate L ligands in complexes 3 and 4 adopt both the syn and anti conformation and those in 1 and 2 adopt the anti conformation only. The anions CH3CO2− in complex 1 bridge the Ag(I) atoms in η1, η2, μ3-coordination mode forming a 1-D zig-zag –[Ag(CH3COO)]n– chains, while the anions ClO4−, CF3SO3− and SO42− in complexes 2–4 are not coordinated to the Ag(I) atoms, but all of them play an important roles in linking cationic 2-D frameworks into 3-D supramolecular structures.
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