New developments in the chemistry of organoantimony and -bismuth rings

Abstract

Novel organoantimony homocycles comprise a three-membered antimony ring, R₃Sb₃, organoantimony polycycles, R₄Sb₈, R₅Sb₇, and transition metal carbonyl complexes with the t-Bu₄Sb₄ or t-Bu₃Sb₄ ligand. In this review the use of t-Bu₄Sb₄ as a source for complexes with the Sb₂ or cyclo-Sb₃ ligands and the synthesis and characterisation of the first organobismuth monocycles, R_nBi_n (n = 3, 4) are also discussed.