@misc{10481/57364,
year = {2019},
month = {6},
url = {http://hdl.handle.net/10481/57364},
abstract = {Phosphonate ligands demonstrate strong affnity 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.},
organization = {K.D.D. acknowledges the Research Committee of the University of Crete (Grant KA 10329) for
financial support},
publisher = {Crystals},
keywords = {metal phosphonate},
keywords = {ionic compounds},
keywords = {phosphonic acids},
keywords = {organic salts},
title = {Platonic Relationships in Metal Phosphonate Chemistry: Ionic Metal Phosphonates},
doi = {10.3390/cryst9060301},
author = {Xanthopoulos, Konstantinos and Anagnostou, Zafeiria and Chalkiadakis, Sophocles and Choquesillo Lazarte, Duane and Mezei, Gellert and Zareba, Jan K. and Zon, Jerzy and Demadis, Konstantinos D.},
}