In search of new fully fluorinated ligands which effectively sensitized the lanthanide luminescence the 4,5,6,7-tetrafluoro-1,3-benzothiazol-2(3Н)-thione (Hmbt^F) was proposed. Based on this ligand a set of new complexes LnL₃(THF)₂ (Ln1) (Ln = Nd, Gd, Tb, Dy, Er, Yb) was synthesized and their luminescence were studied. The structure of the compounds was established with an example of Gd derivative. The triplet state energy of mbt^F was found to be 21500 cm⁻¹ that enables the resonant energy transfer to Dy³⁺, Tb³⁺, Nd³⁺ and Er³⁺ ions and stipulates metal-centered emission of some complexes. In case of Yb1 the observed luminescence of Yb³⁺ ion probably occurs due to the non-resonant energy transfer.