Synthesis, photophysical and electrochemical properties of naphthaldimine based boron complexes

Publication date: Available online 14 April 2019Source: Journal of Organometallic ChemistryAuthor(s): Ramu V. Ranga Naidu Chinta, Basava Punna Rao Aradhyula, Anna Chandrasekar Murali, Krishnan VenkatasubbaiahAbstractNaphthaldehyde based imine ligands (L1H2 and L2H3) have been designed and synthesized. The coordination of imine ligands with BF2 motif and BPh2 motif lead to the formation of complexes 1–4. Both the ligands and the boron complexes were characterized by multinuclear NMR spectroscopy and mass spectrometry. Boron NMR of the complexes revealed that the boron atom is in tetracoordinate environment. The optical properties of the complexes and the ligands in solution suggest that borylation enhanced the quantum yields of the ligands. The electrochemical studies indicated that diboron complexes (1 & 3) and triboron complexes (2 & 4) exhibit two and three separate reduction waves respectively.Graphical abstract
Source: Journal of Organometallic Chemistry - Category: Chemistry Source Type: research