BISMUTH–OXYGEN BONDING AND COORDINATION GEOMETRY IN TETRAPHENYLBISMUTH ARYLOXIDES
Keywords:
Organobismuth compounds; Tetraphenylbismuth aryloxides; Single crystal X-ray diffraction; Coordination geometry; Phenyl–proton exchange; Structure–property relationshipsAbstract
Organobismuth chemistry offers unique opportunities for developing
selective reagents and catalysts due to the element’s accessible Bi(III)/Bi(V) redox
states, pronounced Lewis acidity, and comparatively low toxicity among heavy
elements. In this study, more than 150 previously unreported bismuth derivatives were
synthesized, with 74 structures determined by single-crystal X-ray diffraction.
Particular attention was given to tetraphenylbismuth aryloxides, which are obtained
in high yields under mild conditions through the phenyl–proton exchange reaction
between pentaphenylbismuth and phenols. to seven, producing systematic
perturbations in equatorial bond angles.
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