The condensation reaction between two chemically different tetranuclear cubane-like clusters [Ni(μ -Cl)(Cl)(HL)] (1; HL=2-methyl-1-(pyridin-2-yl)propan-2-ol) and [Ni(μ -OH)(Cl)(HL)] (2) provides new access to higher nuclearity complexes, as shown with the synthesis of the octanuclear complex [Ni (μ -Cl) (μ -OH) (μ-Cl) Cl (HL) ] (3). In one instance, we also isolated the heptanuclear complex [Ni (μ -Cl) (μ -OH) Cl (H O) (HL) ]Cl (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.
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