Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/175123
Title: From bowls to capsules: assembly of hexanuclear NiII rings tailored by alkaline cations.
Author: Mayans Ayats, Júlia
Stoumpos, C. C.
Font Bardia, Ma. Mercedes
Escuer Fité, Albert
Keywords: Propietats magnètiques
Níquel
Anàlisi de conglomerats
Magnetic properties
Nickel
Cluster analysis
Issue Date: 1-Sep-2020
Publisher: Wiley-VCH
Abstract: An anionic hexanuclear NiII metallamacrocycle with endo and exo linking sites has been employed as a building block to generate a series of capsules and bowls of nanometric size. The supramolecular arrangement of the {Ni6} rings was tailored by the size of the alkali cations, showing the transition from {Ni6-M2-Ni6} capsules (M = LiI and NaI) to {Ni6-M} bowls (M = KI and CsI). The alkyl co-cations are determinant to stabilize the assemblies by means of CHꞏꞏꞏ interactions on the exo side of the metallamacrocycles. The effect on the topology of the supramolecular assemblies of the cation size, cation charge, Et3NH+ or Me4N+ countercations has been analysed. Magnetic mesurements reveal the presence of ferromagnetic and antiferromagnetic interactions inside the rings that allow a S = 0 ground state.
Note: Versió postprint del document publicat a: https://doi.org/10.1002/chem.202001900
It is part of: Chemistry-A European Journal, 2020, vol. 26, num. 49, p. 11158-11169
URI: http://hdl.handle.net/2445/175123
Related resource: https://doi.org/10.1002/chem.202001900
ISSN: 0947-6539
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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