Vf. Anufrienko et al., IDENTIFICATION OF EXCHANGE-COUPLED V4-V-MO OXIDE SYSTEMS( AND CU2+ IONS IN CU), Reaction kinetics and catalysis letters, 48(2), 1992, pp. 589-592
ESR studies of X(CuO).V2O5.8.3 MoO3 (x = 1-2) calcined in flowing nitr
ogen at 250-350-degrees-C have revealed the exchange interaction of Cu
2+ and V4+ ions that form a paramagnetic system.