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Magnetic properties and 31 P NMR studies of superexchange mechanism in molybdenyl phosphate MoOPO 4

1990; Elsevier BV; Volume: 76; Issue: 4 Linguagem: Inglês

10.1016/0038-1098(90)90647-t

1879-2766

Luís Lezama, Kyung‐Soo Suh, G. Villeneuve, Teófilo Rojo,

Catalysis and Oxidation Reactions

MoOPO4 has been prepared and characterized by its X-ray powder diffraction pattern and spectroscopic techniques (uv-visible, EPR). Magnetic measurements show a 3D antiferromagnetic behavior below 18 K for this compound, in contrast to the isostructural α-VOSO4 which exhibits a 2D ferromagnetic behavior. The 31P NMR studies clearly show that the exchange mechanism involves the |PO4| tetrahedra.