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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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701407.pdf | 1.82 MB | Adobe PDF | View/Open |
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