Synthesis, crystal structure and magnetic properties of the cyclic tetranuclear compound [Cu4(pz)4(hppa)2(H2O)4] [pz = pyrazolate; hppa = R,S-2-hydroxo-2-phenyl-2-(1-pyrazolyl)acetate]

1. Pasán, J.
2. Lago, A.B.
3. Cañadillas-Delgado, L.
4. Fabelo, Ó.
5. Ruiz-Pérez, C.
6. Lloret, F.
7. Julve, M.