@misc{10481/66580,
year = {2021},
url = {http://hdl.handle.net/10481/66580},
abstract = {We synthesized and studied the polymeric compound {[Cu2
(µ4
-EDTA)(Him)2
] 2H2O}n
(1). The single-crystal structure is reported along with an in depth characterization of its thermal
stability (TGA), spectral properties (FT-IR, Vis-UV and RSE), and magnetic behavior. The crystal
consists of infinite 2D-networks built by centrosymmetric dinuclear motifs, constructed by means of
a bridging anti,syn-carboxylate group from each asymmetric unit. Each layer guides Him ligands
toward their external faces. They are connected by intermolecular (Him)N-H···O(carboxylate) bonds
and antiparallel π–π stacking between symmetry related pairs of Him ligands, and then pillared in a
3D-network with parallel channels, where disordered water molecules are guested. About half of
the labile water is lost from these channels over a wide temperature range (r.t. to 210 ◦C) before the
other one, most strongly retained by the cooperating action of (water)O1-H(1A)···O(carboxylate) and
(water) O1-H(1B)···π(Him) interactions. The latter is lost when organic ligands start to burn. ESR
spectra and magnetic measurements indicated that symmetry related Cu(II) centers connected by the
bridging carboxylate groups behave magnetically not equivalently, enabling an exchange interaction
larger than their individual Zeeman energies.},
organization = {MICINN of Spain (project PGC2018-102047-B-I00)},
organization = {MICIU/AEI of Spain (project CTQ2017-
85821-R FEDER)},
organization = {Research groups FQM-283},
organization = {FQM-243 (Junta de Andalucía, Spain)},
publisher = {MDPI},
keywords = {Crystal structure},
keywords = {Copper(II)},
keywords = {EDTA},
keywords = {Imidazole},
keywords = {Polymers},
keywords = {H-bonding},
keywords = {π–π stacking},
keywords = {Water O-H/π interaction},
title = {H-Bonds, π-Stacking and (Water)O-H/π Interactions in (µ4-EDTA)Bis(Imidazole) Dicopper(II) Dihydrate},
doi = {10.3390/cryst11010048},
author = {Belmont Sánchez, Jeannette Carolina and García Rubiño, María Eugenia and González Pérez, Josefa María and Niclos Gutiérrez, Juan},
}