Synthetic Tuning of Electronic and Photophysical Properties of 2‑Aryl-1,3-Benzothiaphospholes

A series of 2-aryl-1,3-benzothiaphospholes
have been synthesized
from 1-mercapto-2-phosphinobenzene and a variety of acid chlorides.
The structure of 2-phenyl-1,3-benzothiaphosphole was established using
X-ray diffraction. The electrochemical and photophysical properties
of each benzothiaphosphole are reported and some of these molecules
exhibit reversible 1-electron reductions.