Four- and five-coordinate metal atoms in a supramolecular polymeric assembly of silver(I) with (4-methyl-2-quinolylthio)acetate
作者:Yu. V. Kokunov、Yu. E. Gorbunova、V. V. Kovalev、L. D. Popov、S. A. Borodkin、G. A. Razgonyaeva、S. A. Kozyukhin
DOI:10.1134/s0036023616110097
日期:2016.11
The coordination compound [Ag2L2(H2O)(2)] center dot 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) , (b) = 12.056(2) , (c) = 16.846(3) , beta = 122.17(3)A degrees, V = 5370.4(2) (3), rho(calc) = 1.861 g/cm(3), 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 [001] direction. The presence of outer-sphere water molecules involved in O-H center dot center dot center dot O hydrogen bonding is responsible for the formation of a supramolecular framework structure. The photoluminescence spectrum of compound I shows two bands at similar to 450 and similar to 485 nm corresponding to the blue spectral range.