Boratriazines: inducing luminescence through boron incorporation into a terpy-type framework

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.