Abstract New monometallic dioxomolybdenum complexes, 2 and 3, containing the bis (oxazoline) B and the oxazolinyl-pyridine C respectively, have been prepared and fully characterized both in solution and solid state, including the single-crystal X-ray diffraction analysis for 2, which represents the first structure of a Mo (VI) complex coordinated to a bis (oxazoline). These complexes, together with the bimetallic system 1, were used as ...