Abstract
The complexes [AgL2(NO3)] (I) and [AgL2(CH3SO3)] · H2O (II) (L is 2-methylquinoline, C10H9N) have been synthesized and structurally characterized by single-crystal X-ray diffraction. Crystals of I are monoclinic, space group P21/n, a = 9.296(1) A, b = 13.495(1) A, c = 14.931(1) A, β = 95.06(1)°, V = 1865.8(3) A3, ρcalc = 1.624 g/cm3, Z = 4. Crystals of II are monoclinic, space group P21/n, a = 13.147(1) A, b = 11.767(1) A, c = 13.814(1) A, β = 96.06(1)°, V = 2124.3(3) A3, ρcalc = 1.599 g/cm3, Z = 4. Compounds I and II are composed of discrete complexes of similar structure but with different orientation of the methyl groups of ligand L (trans and cis arrangement, respectively). Both anions, NO3- and CH3SO3- function as a chelating weakly bound ligand for the Ag+ ion. The presence of water molecules in II is favorable for the formation of dimeric supramolecular moieties between the centrosymmetrically arranged Ag+ complexes with 2-methylquinoline. The luminescence spectra of solid complexes I and II showed a bathochromic shift as compared to the spectrum of L in acetonitrile. Complexes I and II have been characterized by 1H and 13C{H} NMR spectra in CD3CN.
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