The synthesis and physicochemical properties of 2,2-difluoro-4,6-bis(2-pyridyl)-1,3-dihydro-1,3,5,2-triazaborinine (F₂-Py₂BTA) and 2,2-difluoro-4,6-bis(2-pyrimidinyl)-1,3-dihydro-1,3,5,2-triazaborinine (F₂-Pm₂BTA), prepared from their respective N-imidoylamidines, are presented. In addition, the preparation and characterization of the Lewis acid–base adduct of pyrimidine-2-carboximidamide trifluoroborane (PmAmBF₃), which forms as a side product in the reaction with N-2-pyrimidylimidoyl-2-pyrimidylamidine, is also described.