A new layered phase Na_0.60VO₂ was synthesized by chemical deintercalation of sodium from the pristine compound O3-NaVO₂. The Na_0.60VO₂ compound exhibits a distorted P′3-type oxygen stacking (AABBCC) with an average monoclinic unit cell containing <i>a</i> = 4.9862(14) Å, <i>b</i> = 2.8708(8) Å, <i>c</i> = 5.917(2) Å, and β = 104.36(3)°. A modulated structure was observed by transmission electron microscopy and X-ray diffraction (XRD) measurements. Indexation of the XRD pattern was achieved by using the <b>q</b> vector equal to 0.44<b><i>b</i></b><b>*</b>, and the 4D superspace group <i>C</i>2/<i>m</i> (0 β 0) s0 was then deduced. The specific heat measurement showed a strong correlated system with a γ value of around 20 mJ·mol⁻¹·K⁻². The electrical conductivity shows a semiconductor-like behavior with an activation energy of 0.52 eV. A paramagnetic behavior of the susceptibility is observed below room temperature with a Curie constant equal to <i>C</i> = 0.076 emu·K⁻¹·mol⁻¹·Oe⁻¹. To explain this small value, a model of pseudotriangular clusters of vanadium with a random distribution of V³⁺ and V⁴⁺ was considered.< Leer menos