Synthesis, reactions, and photophysical properties of o-(alkoxysilyl)(borafluorenyl)benzenes

Publication date: Available online 11 February 2020Source: Journal of Organometallic ChemistryAuthor(s): Tomomi Shimizu, Atsushi KawachiAbstractThe synthesis, reactions, and photophysical properties of o-(alkoxysilyl)(borafluorenyl)benzenes 4 are reported. Compounds 4 were prepared by the reaction of o-(silyl)(lithio)benzenes 6 with (alkoxy)borafluorenes 7. The C–O bonds in 4 are activated by intramolecular coordination of the oxygen atom to the boron atom, as confirmed by reactions with nucleophiles and density functional theory (DFT) calculations. Compounds 4 exhibit absorption at 316 and 279 nm and emission at 536 and 496 nm with a large Stokes shift. DFT calculations were performed to elucidate the molecular orbitals and photophysical properties of 4.Graphical abstract

Source: Journal of Organometallic Chemistry - February 12, 2020 Category: Chemistry Source Type: research