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Título: | Platonic relationships in metal phosphonate chemistry: ionic metal phosphonates |
Autor: | Xanthopoulos, Konstantinos; Anagnostou, Zafeiria; Chalkiadakis, Sophocles; Choquesillo-Lazarte, Duane CSIC ORCID; Mezei, Gellert; Zaręba, Jan K.; Zoń, Jerzy; Demadis, Konstantinos D. | Palabras clave: | Metal phosphonate Ionic compounds Phosphonic acids Organic salts |
Fecha de publicación: | 11-jun-2019 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Crystals 9(6): 301 (2019) | Resumen: | Phosphonate ligands demonstrate strong affinity for metal ions. However, there are several cases where the phosphonate is found non-coordinated to the metal ion. Such compounds could be characterized as salts, since the interactions involved are ionic and hydrogen bonding. In this paper we explore a number of such examples, using divalent metal ions (Mg2+, Ca2+, Sr2+ and Ni2+) and the phosphonic acids: p-aminobenzylphosphonic acid (H2PABPA), tetramethylenediamine-tetrakis(methylenephosphonic acid) (H8TDTMP), and 1,2-ethylenediphosphonic acid (H4EDPA). The compounds isolated and structurally characterized are [Mg(H2O)6]·[HPABPA]2·6H2O, [Ca(H2O)8]·[HPABPA]2, [Sr(H2O)8]·[HPABPA]2, [Mg(H2O)6]·[H6TDTMP], and [Ni(H2O)6]·[H2EDPA]·H2O. Also, the coordination polymer {[Ni(4,4’-bpy)(H2O)4]·[H2EDPA]·H2O}n was synthesized and characterized, which contains a bridging 4,4’-bipyridine (4,4’-bpy) ligand forming an infinite chain with the Ni2+ cations. All these compounds contain the phosphonate anion as the counterion to charge balance the cationic charge originating from the metal cation. | Descripción: | © The Author(s). | Versión del editor: | https://doi.org/10.3390/cryst9060301 | URI: | http://hdl.handle.net/10261/185040 | DOI: | 10.3390/cryst9060301 | ISSN: | 2073-4352 | E-ISSN: | 2073-4352 |
Aparece en las colecciones: | (IACT) Artículos |
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