Synthesis and structure of Sb←O intramolecularly coordinated ethynylstibanes

A set of Sb←O intramolecularly coordinated organoantimony acetylides L2Sb(CCR) (L = 2,6-(t-BuOCH2)2C6H3, R = Ph, t-Bu, Me3Si) were prepared and their structure in the solid state was established by the help of X-ray diffraction technique.