A self-assembled novel octanuclear Cu(II) ‘pin-wheel’ cluster exhibiting ferromagnetic coupling

The heptadentate, ‘tritopic’ ligand 2poapH2 reacts with Cu(NO3)2 in the presence of Gd(NO3)3 to give a novel, self-assembled, ferromagnetically coupled, alkoxide bridged octanuclear Cu(II) cluster in the shape of a pin-wheel, with a central Cu4[μ-O4] core, and isolated Curie-like [Gd(NO3)4(H2O)2]− anions.

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