Primary amines and benzothiophene-3-carboxaldehyde
were reacted
to give four large, bulky imine ligands. These imine ligands were
reacted with a tetramethyl platinum dimer and by heteroatom-assisted
C–H activation, both monometalated compounds and bismetalated
compounds were synthesized. In all cases, five-membered platinacycles
were formed. The compounds were characterized by NMR spectroscopy,
and one bismetalated compound was characterized by single-crystal
X-ray diffraction. The UV–vis absorption and emission spectra
and the excited-state lifetimes were recorded for these complexes.
Density functional theory (DFT) and time-dependent-DFT calculations
were performed to aid in the assignment of the absorption and emission
spectra of the newly synthesized complexes.
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