Issue 4, 2017
From the journal:

Journal of Materials Chemistry C

Single-molecule magnetism arising from cobalt(ii) nodes of a crystalline sponge†

Gabriel Brunet, ORCID logo a   Damir A. Safin,a   Jesús Jover,b   Eliseo Ruiz ORCID logo *b  and  Muralee Murugesu ORCID logo *a  

* Corresponding authors

a Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, ON, Canada K1N 6N5
E-mail: m.murugesu@uottawa.ca
Tel: +1 (613)562 5800 ext. 2733

b Departament de Química Inorgànica i Orgànica and Institut de Recerca en Química Teòrica i Computacional, Universitat de Barcelona, Barcelona, Spain

Abstract

The remarkable Metal–Organic Framework (MOF), {[(Co(NCS)2)3(κ3-TPT)4]·a(H2O)·b(MeOH)}n (1), which is used in the revolutionary crystalline sponge method, displays characteristic Single-Molecule Magnet (SMM) behaviour under applied static fields. We report the subtle effects of changes in the coordination environment of the CoII ions in 1, leading to drastically different magnetic behaviors of two additional related compounds, {[(Co(NCS)2)3(κ0–3-TPT)4]·c(H2O)}n (2) and {[(Co(NCS)2(H2O)0.65(MeOH)0.35)3(κ3-TPT)2]·2.4(H2O)}n (3). Magnetic measurements reveal unquenched first order orbital angular momentum, leading to significant magnetic anisotropy in all compounds, which was corroborated through CASSCF-type calculations. Notably, the crystalline sponge is the first example of a 3D network built from CoII Single-Ion Magnets (SIMs) as nodes.

Graphical abstract: Single-molecule magnetism arising from cobalt(ii) nodes of a crystalline sponge

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Article information

DOI
https://doi.org/10.1039/C6TC04703C
Article type
Paper
Submitted
31 Oct 2016
Accepted
20 Dec 2016
First published
20 Dec 2016

J. Mater. Chem. C, 2017,5, 835-841

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Single-molecule magnetism arising from cobalt(II) nodes of a crystalline sponge

G. Brunet, D. A. Safin, J. Jover, E. Ruiz and M. Murugesu, J. Mater. Chem. C, 2017, 5, 835 DOI: 10.1039/C6TC04703C

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