In contrast to phosphine oxides and arsine oxides, which are common and exist as stable monomeric species featuring the corresponding pnictoryl functional group (Pn=O/Pn⁺–O⁻; Pn = P, As), stibine oxides are generally polymeric, and the properties of the unperturbed stiboryl group (Sb=O/Sb⁺–O⁻) remain unexplored. We now report the isolation of the monomeric stibine oxide, Dipp₃SbO (where Dipp = 2,6-diisopropylphenyl). Spectroscopic, crystallographic and computational studies provide insight into the nature of the Sb=O/Sb⁺–O⁻ bond. Moreover, isolation of Dipp₃SbO allows the chemistry of the stiboryl group to be explored. Here we show that Dipp₃SbO can act as a Brønsted base, a hydrogen-bond acceptor and a transition-metal ligand, in addition engaging in 1,2-addition, O-for-F₂ exchange and O-atom transfer. In all cases, the reactivity of Dipp₃SbO differed from that of the lighter congeners Dipp₃AsO and Dipp₃PO.

与常见的氧化膦和氧化胂不同，它们以稳定的单体形式存在，具有相应的 pnicoryl 官能团（Pn=O/Pn ⁺ –O ⁻；Pn = P，As），氧化锑通常是聚合的，并且未受干扰的芪基 (Sb=O/Sb ⁺ –O ⁻ ) 的性质仍未得到探索。_{我们现在报告单体氧化锑 Dipp 3} SbO（其中 Dipp = 2,6-二异丙基苯基）的分离。光谱学、晶体学和计算研究提供了对 Sb=O/Sb ⁺ –O ⁻键的性质的深入了解。_{此外，Dipp 3}的分离SbO 允许探索 stiboryl 基团的化学性质。在这里，我们表明 Dipp ₃ SbO 可以充当 Brønsted 碱、氢键受体和过渡金属配体，此外还参与 1,2-加成、O-for-F ₂交换和 O-原子转移。_{在所有情况下，Dipp 3} SbO的反应性都不同于较轻的同系物 Dipp ₃ AsO 和 Dipp ₃ PO。