Solid-state conversion of thallium(I) coordination polymer nanoparticles with cubic cage units to an organometallic silver(I) coordination polymer

Publication date: 15 April 2018 Source:Journal of Organometallic Chemistry, Volume 861 Author(s): Zarin Moghadam, Kamran Akhbari, Anukorn Phuruangrat Solid-state structural transformation of three-dimensional Tl(I) coordination polymer nanoparticles with cubic cage Tl4O4 unit, prepared by sonochemical procedure, to three-dimensional organometallic Ag(I) coordination polymer nanostructures has been observed upon mechanochemical reaction of compound [Tl4 (μ8-B-4-hps)2]n (1), [H2B-4-hps = bis(4-hydroxyphenyl) sulfone] with AgNO3. During this conversion, compound 2 with higher symmetry in its unit cell is formed. Although B-4-hps2- in both compounds has μ 8 coordination modes but these two modes are different from each other. These nanostructures were characterized by Scanning Electron Microscopy (SEM). IR spectroscopy, X-ray powder diffraction (XRD) and thermo gravimetry and differential thermal analyses (TG-DTA), indicated that this conversion is irreversible. The irreversibility of this transformation is due to the formation of stronger Ag-O and Ag-C bonds (in 2) in comparison with initial Tl-O bonds in 1. Graphical abstract
Source: Journal of Organometallic Chemistry - Category: Chemistry Source Type: research