Equilibrium 1+2b+3b@210K (b: R=Me).

NMR spectra for an equilibrium between 1-mesityl-2,2,3-tris(2,4,6-triisopropylphenyl)-2H-trisilirene (1), 1,3-di-tert-butyl-4,4-dimethyl-4,5-dihydro-1H-1,3,2-diazasilol-3-ium-2-ide (2b) and 1',3'-di-tert-butyl-4',4'-dimethyl-1,3,4,4-tetrakis(2,4,6-triisopropylphenyl)spiro[bicyclo[1.1.0]tetrasilane-2,2'-[1,3,2]diazasilolidine] (3b). NOTE: Compound numberings in file names related to a now obsolete scheme and should be disregarded.