The reaction of RSbO₃H₂ with t-butylsilanetriol has led to the isolation of organoantimony(V) based molecular triangles stabilized by siloxane frameworks. Depending on the reaction conditions employed or the substituents present on the antimony atom, either a combination of a disiloxane and a tetrasiloxane framework or a trisiloxane framework was generated in situ leading to the stabilization of the Sb₃ triangle.