posted on 2024-05-29, 22:14authored byLogan
T. Maltz, François P. Gabbaï
With an interest in chalcogen bonding, we use a rigid
indazolium
backbone to install a formally zero-valent Se center next to a divalent
Te center, allowing us to investigate the effects of oxidation of
the Se center on the observed Te···Se interaction.
Through spectroscopic and computational comparison of the Se(0) species
with its Se(II) counterpart and their monochalcogen analogues, we
experimentally and computationally investigate the effect of modulating
Se basicity on the resulting Te···Se interaction. Comparison
with well-studied naphthalene and acenaphthene variants indicates
that the increased basicity of the Se(0) center allows for a comparably
strong Te···Se interaction despite longer peri distances and a larger splay angle. Finally, our study illuminates
the potential non-innocence of cationic organic substituents in chalcogen-bonding
catalysis of the transfer hydrogenation of quinolines.