Synthesis, structures, and single-molecule magnet behaviour of high-nuclearity nickel(II) dicubane-type complexes with pyridyl-alcohol-ligands
Langue
en
Article de revue
Ce document a été publié dans
ChemPlusChem. 2015, vol. 80, n° 8, p. 1312-1320
Wiley
Résumé en anglais
The condensation reaction between two chemically different tetranuclear cubane-like clusters [Ni(μ3-Cl)(Cl)(HL)]4 (1; HL=2-methyl-1-(pyridin-2-yl)propan-2-ol) and [Ni(μ3-OH)(Cl)(HL)]4 (2) provides new access to higher ...Lire la suite >
The condensation reaction between two chemically different tetranuclear cubane-like clusters [Ni(μ3-Cl)(Cl)(HL)]4 (1; HL=2-methyl-1-(pyridin-2-yl)propan-2-ol) and [Ni(μ3-OH)(Cl)(HL)]4 (2) provides new access to higher nuclearity complexes, as shown with the synthesis of the octanuclear complex [Ni8(μ3-Cl)3(μ3-OH)5(μ-Cl)2Cl6(HL)7] (3). In one instance, we also isolated the heptanuclear complex [Ni7(μ3-Cl)2(μ3-OH)6Cl4(H2O)2(HL)6]Cl2 (4). Magnetic properties measured by superconducting quantum interference device (SQUID) susceptometry evidenced S=8 and S=5 ground states for complexes 3 and 4, respectively. In particular, alternating current (ac) susceptometry evidenced slow relaxation of the magnetisation for complex 3, and suggests a similar behaviour at sub-kelvin temperatures for complex 4.< Réduire
Mots clés en anglais
cluster compounds
cubanes
magnetic properties
nickel
N.O ligands
Origine
Importé de halUnités de recherche