[en] The Te₂-pressure over Mo₃Te₄ and MoTe₂ as well as over equilibrium mixtures of Mo+Mo₃Te₄, Mo₃Te₄+MoTe₂, and MoTe₂+Te.l, respectively, has been measured directly between 1100 and 1373 K. No remarkable deviations from stoichiometry exist for MoTe₂ as well as for Mo₃Te₄. The coexistence pressures are for Mo/Mo₃Te₄: lg p/10⁵ Pa = 5.56-9879/T, and for Mo₃Te₄/MoTe₂: lg p/10⁵ Pa = 8.398-11790/T. Third law enthalpies are derived: Δ/sub f/H⁰(298, Mo₃Te₄) = -195.5 +- 10 with S⁰(298) = 268, and Δ/sub f/H⁰(298, αMoTe₂) = -89.5 +- 11 with S⁰(298) = 115.3 (values in kJ/mol and J mol^-1K^-1, respectively). (author)