Synthesis, Structures, and Single‐Molecule Magnet Behaviour of High‐Nuclearity Nickel(II) Dicubane‐Type Complexes with Pyridyl–Alcohol Ligands. Issue 8 (3rd July 2015)

• Record Type: Journal Article
• Authors: Hameury, Sophie; Kayser, Laure; Pattacini, Roberto; Rosa, Patrick; Barra, Anne‐Laure; Braunstein, Pierre
• Is Part Of: ChemPlusChem. Volume 80:Issue 8(2015:Aug.)
• Page Start: 1312
• Page End: 1320
• Publication Date: 2015-07-03
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201500184
• Languages: English
• ISSNs: 2192-6506

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The condensation reaction between two chemically different tetranuclear cubane‐like clusters [Ni(μ₃‐Cl)(Cl)(HL)]₄ (<bold>1</bold>; HL=2‐methyl‐1‐(pyridin‐2‐yl)propan‐2‐ol) and [Ni(μ₃‐OH)(Cl)(HL)]₄ (<bold>2</bold>) 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] (<bold>3</bold>). In one instance, we also isolated the heptanuclear complex [Ni₇(μ₃‐Cl)₂(μ₃‐OH)₆Cl₄(H₂O)₂(HL)₆]Cl₂ (<bold>4</bold>). Magnetic properties measured by superconducting quantum interference device (SQUID) susceptometry evidenced <italic>S</italic>=8 and <italic>S</italic>=5 ground states for complexes <bold>3</bold> and <bold>4</bold>, respectively. In particular, alternating current (ac) susceptometry evidenced slow relaxation of the magnetisation for complex <bold>3</bold>, and suggests a similar behaviour at sub‐kelvin temperatures for complex <bold>4</bold>.</p> </abstract>