First cyclotrisiloxanes with three different R2Si-units of the general formula R21Si(OSiR22)(OSiR23)O (R21 = Me2Si(NSiMe3)2, R2 = Cl, Ot-Bu, R3 = Me)
Keywords: سیلوکسان; Cyclisations; Siloxanes; Cyclosiloxanes; Cyclotrisiloxanes; Silanols; X-ray crystal structures