2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/83996Van der Waals coefficients for the heteronuclear alkali-metal dimers of Li, Na, K, Rb, Cs, and Fr are calculated using relativistic ab initio methods augmented by high-precision experimental data. We argue that the uncertainties in the coefficients are unlikely to exceed about 1%.11 pages, 2 figs, graphicx.styAtomic PhysicsChemical Physicstext