Ein 2,3,9,10‐Tetraaza‐1,6,8,12‐tetrasiladispiro[4.1.4.1]dodeca‐3, 10‐dien durch Dimerisierung eines Heterocyclus mit exocyclischer SiC‐Doppelbindung

Abstract

Silaethene lassen sich in Losung durch Eliminierungsreaktionen vom Typ (la) + (I b) erzeugen und als [2 + 21-Cycloaddukte nachweisen['l. X = elektronegativer Substituent, M = Alkalimetall

From lithium ketazides to isomeric silylketazine-rings – imine-enamine tautomerism

“…The 29 Si NMR spectrum of 2 shows the resonance signal at 33.3 ppm, which can also be consistent with the data of the silene IV and is in the range of signals of an imine adduct of a silene described by Wiberg [9] or a silaketimine synthesized by Kira [10]. Comparable silenes of silyl-hydrazones were obtained and characterized as dimers via the Si@C-bond [11][12][13].…”

“…The space group of 6 is triclinic, P 1, with unit-cell dimensions a = 1012.21 (12), b = 1250.28 (18), c = 1316.78(18) pm, a = 77°(11), b = 89.85°(10), c = 88.79°(11), u = 1.626(4) nm 3 , Z = 1.…”