Abstract
AuIatoms play an important role in determining the anisotropy of CoIInodes in 2D AuI–CoIIfield-induced SIMs.
Highlights
Discrete mono- or polynuclear coordination compounds exhibiting Single-Molecule Magnet (SMM) behaviour have been profusely investigated during the last two decades, becauseSMMs hopeful candidates for understanding the quantum phenomena at the mesoscopic level and for potential upcoming applications, among other areas, in ultrahigh density magnetic information storage[2] and molecular spintronics,[3] and as qubits for quantum computing at the molecular level.[4]
The superiority of SIMs over polynuclear SMMs lies in the fact that the anisotropy of the former can be finely regulated by controlling the electronic configuration of the metal centers, which depends on factors such as type and oxidation state of the metal ion, coordination number and geometry and ligand field strength.6h the highest values of U and TB have been reached with lanthanide-based SIMs,6c,d,i,l in the last decade the search for new SIMs has been expanded to transition metal ions.6g,i,k that search was prompted by the discovery of a Fe(II) complex with trigonal pyramidal geometry exhibiting SIM behaviour with a very high effective energy barrier (Ueff ).[8]
The structure of 1 is made of parallel sheets lying in the bc plane, which are built from edge-sharing slightly distorted squareplanar {NC–Au–CN–Co}4 units with the Co(II) ions located at the corners and the [Au(CN)2]− bridging anions at the edges (Fig. 1)
Summary
Discrete mono- or polynuclear coordination compounds exhibiting Single-Molecule Magnet (SMM) behaviour have been profusely investigated during the last two decades, becauseSMMs hopeful candidates for understanding the quantum phenomena at the mesoscopic level and for potential upcoming applications, among other areas, in ultrahigh density magnetic information storage[2] and molecular spintronics,[3] and as qubits for quantum computing at the molecular level.[4]. The superiority of SIMs over polynuclear SMMs lies in the fact that the anisotropy of the former can be finely regulated by controlling the electronic configuration of the metal centers, which depends on factors such as type and oxidation state of the metal ion, coordination number and geometry and ligand field strength.6h the highest values of U and TB have been reached with lanthanide-based SIMs,6c,d,i,l in the last decade the search for new SIMs has been expanded to transition metal ions.6g,i,k that search was prompted by the discovery of a Fe(II) complex with trigonal pyramidal geometry exhibiting SIM behaviour with a very high effective energy barrier (Ueff ).[8] The most appropriate metal complexes for exhibiting SIM behaviour are those possessing:
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