Four- and five-coordinate metal atoms in a supramolecular polymeric assembly of silver(I) with (4-methyl-2-quinolylthio)acetate
The coordination compound [Ag2L2(H2O)2] · 2H2O (I), L = C12H10NO2S has been synthesized by the reaction of AgNO3 with 4-methyl-2-quinolylthioacetic acid (HL) preliminarily neutralized with an equimolar amount of NBu4OH. Its crystal structure has been determined, and luminescence properties have been studied. Crystals of I are monoclinic, space group C2/c, a = 31.239(6) Å, b = 12.056(2) Å, c = 16.846(3) Å, β = 122.17(3)°, V = 5370.4(2) Å3, ρcalc = 1.861 g/cm3, Z = 16. The structure is formed by two crystallographically nonequivalent silver atoms Ag(1) and Ag(2) and two tridentate bridging ligands L coordinated through the S, N, and O atoms. These atoms, together with water molecules, form the coordination environments of the metal atoms with CN = 5 and 4, respectively. The Ag+ ions and the tridentate ligands form infinite [Ag4L4] n bands extended in the  direction. The presence of outer-sphere water molecules involved in O–H···O hydrogen bonding is responsible for the formation of a supramolecular framework structure. The photoluminescence spectrum of compound I shows two bands at ~450 and ~485 nm corresponding to the blue spectral range.
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- 1.R. C. Mehrotra and R. Bohra, Metal Carboxylates (Academic Press, London, 1983), p. 396.Google Scholar
- 3.A. V. Volkov, M. A. Moskvina, I. V. Karachevtsev, et al., Vysokomol. Soedin. A 40, 45 (1998).Google Scholar
- 4.G. Liu, X. Yan, Z. Lu, et al., Chem. Mater. 17, 985 (2005).Google Scholar
- 5.Yu. V. Kokuno., Yu. E. Gorbunova, L.D. Popov, et al., Russ. J. Coord. Chem. 42, 323 (2016).Google Scholar
- 7.X. Jin, X. Xie, H. Qiun, et al., Chem. Commun., 600 (2002).Google Scholar
- 10.A. A. Avetisyan and I. L. Aleksanya., Khim. Geterotsikl. Soedin., no. 5, 403 (2005).Google Scholar