Guest-dependent single-ion magnet behaviour in a cobalt(ii) metal-organic framework.

Autor: Vallejo J; Departament de Química Inorgànica , Instituto de Ciencia Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . Email: emilio.pardo@uv.es ; Email: joan.cano@uv.es., Fortea-Pérez FR; Departament de Química Inorgànica , Instituto de Ciencia Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . Email: emilio.pardo@uv.es ; Email: joan.cano@uv.es., Pardo E; Departament de Química Inorgànica , Instituto de Ciencia Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . Email: emilio.pardo@uv.es ; Email: joan.cano@uv.es., Benmansour S; Departament de Química Inorgànica , Instituto de Ciencia Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . Email: emilio.pardo@uv.es ; Email: joan.cano@uv.es., Castro I; Departament de Química Inorgànica , Instituto de Ciencia Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . Email: emilio.pardo@uv.es ; Email: joan.cano@uv.es., Krzystek J; National High Magnetic Field Laboratory , Florida State University , Tallahassee , Florida 32310 , USA., Armentano D; Dipartimento di Chimica e Tecnologie Chimiche , Università della Calabria , 87036 , Arcavacata di Rende , Cosenza , Italy., Cano J; Departament de Química Inorgànica , Instituto de Ciencia Molecular (ICMOL) , Universitat de València , 46980 Paterna , València , Spain . Email: emilio.pardo@uv.es ; Email: joan.cano@uv.es.; Fundació General de la Universitat de València (FGUV) , Spain.
Jazyk: angličtina
Zdroj: Chemical science [Chem Sci] 2016 Mar 01; Vol. 7 (3), pp. 2286-2293. Date of Electronic Publication: 2015 Dec 10.
DOI: 10.1039/c5sc04461h
Abstrakt: Single-ion magnets (SIMs) are the smallest possible magnetic devices for potential applications in quantum computing and high-density information storage. Both, their addressing in surfaces and their organization in metal-organic frameworks (MOFs) are thus current challenges in molecular chemistry. Here we report a two-dimensional 2D MOF with a square grid topology built from cobalt(ii) SIMs as nodes and long rod-like aromatic bipyridine ligands as linkers, and exhibiting large square channels capable to host a large number of different guest molecules. The organization of the cobalt(ii) nodes in the square layers improves the magnetic properties by minimizing the intermolecular interactions between the cobalt(ii) centres. Moreover, the SIM behaviour was found to be dependent on the nature of the aromatic guest molecules. The whole process could be followed by single-crystal X-ray diffraction, providing comprehensive evidence of the putative role of the solvent guest molecules that leave a "fingerprint" on the 2D structures and thus, on the cobalt environment.
Databáze: MEDLINE