A Cyclotristibane: Synthesis and Crystal Structure of cyclo-[(Me3Si)2CH]3Sb3

The reaction of RSbCl 2 with Li 3 Sb at −40 °C gives the three-membered organoantimony ring cyclo-Sb 3 R 3 ( 1; R = (Me 3 Si) 2 CH). In solution and in the crystal 1 adopts the structure of a cyclotrialkyltristibane with the substituents in the cis and trans positions.