2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17507We report on the magnetic susceptibility and electron spin resonance measurements on polycrystalline samples of the vanadium oxide VOSb$_{2}$O$_{4}$, a quasi-one dimensional S=1/2 Heisenberg system. We show that the susceptibility vanishes at zero temperature, as in a gapped system, and we argue that this is due to a spin-Peierls transition with strong structural fluctuations.5 pages, 4 figuresStrongly Correlated Electronstext