ThesynthesisofTs,T10andT12silsesquioxanecagesfromarangeofstartingmaterials:phenyl-cistetrol,1,3-pinyltetraethoxydisiloxaneandcyclopentylTresinsbyusingtetran-butylammoniumfluoride(TBAF)asthecatalystisdescribedinthispaper.Thereactionyieldsobtainedviathecurrentroutearebettercomparedtothoseviatheliteratureroutes.SomeofthecagecompoundshavebeencharacterizedbyX-raycrystallography.