Supramolecular assemblies and magnetic behaviors of the M(II)/p-aminopyridine/malonate (M = Ni, Mn, Cu, Co) systems
authors Fernandes, RJ; Frem, RCG; da Silva, PB; Freitas, RS; Silva, P; Fernandes, JA; Rocha, J; Paz, FAA
nationality International
journal POLYHEDRON
author keywords Nickel; Malonate; p-Aminopyridine; Coordination solids; Crystal structures; Magnetic properties
keywords METAL-ORGANIC FRAMEWORKS; COPPER(II) COMPLEX; CRYSTAL-STRUCTURES; COORDINATION; DESIGN; 4-AMINOPYRIDINE; CHEMISTRY; PATTERNS; NI(II); LIGAND
abstract The coordination compounds [Ni(mu-mal)(apy)(2)(H2O)]center dot 2.8H(2)O (1), [Mn(mu-mal)(H2O)(2)] (2), (apyH)(2)[Cu(mu-mal)(2)] (3) and (apyH)(2)[Co(mal)(2)(H2O)(2)] (4) (mal = malonate, apy = p-aminopyridine) have been synthesized and characterized by elemental analysis, vibrational spectroscopy, single crystal X-ray diffraction and magnetometry. With exception of 4, the malonate group acts as bridging ligand leading to the formation of one-dimensional polymeric chains. In compound 1 it was observed the coordination of the p-aminopyridine in the axial positions of the distorted octahedral coordination sphere. The solid-state structure exhibits a high complex 3D network formed by several supramolecular interactions. Magnetic properties were determined for all members of the series and indicate that the materials behave are normal paramagnets, except the Mn polymer 2 which exhibits an antiferromagnetic ground state. (C) 2013 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0277-5387
year published 2013
volume 57
beginning page 112
ending page 117
digital object identifier (doi) 10.1016/j.poly.2013.03.038
web of science category Chemistry, Inorganic & Nuclear; Crystallography
subject category Chemistry; Crystallography
unique article identifier WOS:000320416900016
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