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Title: Influence of Aromatic Cations on the Structural Arrangement of Hg(II) Halides
Author: Sánchez-Férez, Francisco
Solans-Monfort, Xavier
Calvet Pallàs, Maria Teresa
Font Bardia, Ma. Mercedes
Pons, Josefina
Keywords: Estructura cristal·lina (Sòlids)
Layer structure (Solids)
Issue Date: 6-Nov-2020
Publisher: American Chemical Society
Abstract: Understanding the structure and arrangement of hybrid metal halides and their contribution to the optoelectronic properties is, thus far, a challenging topic. In particular, new materials composed of d10 metal halides and pyridinium cations are still largely unexplored. Therefore, we report the synthesis and characterization of six Hg(II) salts built up from (Hg2Cl6)2− or (HgX4)2− anions (X = Cl, Br, I) and 2,2′-bipyridium (2,2′- Hbipy)+, 2,2′-bipyridine-1,1′-diium (2,2′-H2bipy)2+, or 1,10- phenantrolinium (1,10-Hphen)+ cations, using the same experimental conditions. All of them have been characterized by PXRD, EA, FTIR-ATR, and 1H NMR spectroscopies; single-crystal X-ray diffraction; and TG/DTA determinations. The study of their packing via Hirshfeld surface analysis and 3D deformation density mapping revealed the contributions of the intermolecular interactions to the structural arrangement, notably, the effect of the cation planarity on them. Successively, periodic DFT calculations showed that (i) the valence and conducting bands are mainly composed of the p orbitals of the halide and the organic cation, respectively, and (ii) the corresponding band gap depends mainly on the halide.
Note: Reproducció del document publicat a:
It is part of: ACS Omega , 2020, vol. 5, num. 45, p. 29357-29372
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ISSN: 2470-1343
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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