Group 14 metalloles. 2. Ionic species and coordination compounds

Synthesis and Reactions of Stannole Anions

“…The structure in solution of the stannole anions was characterized by 1 H, 13 C, 119 Sn and 7 Li NMR spectroscopy ( Table 2). In the 119 Sn NMR spectra, there appears only one signal assignable to the 1-tert-butyl-substituted stannole anion 16 at δ = 30.4 ppm, suggesting that the genera- [a] Not identified.…”

“…Metalolyl anions of heavier group 14 elements have received considerable attention in view of their potential aromatic character as heavier congeners of the cyclopentadienyl anion, [1] since the first report on the generation of a silole anion in 1958. [2] Over the past few decades, silole and germole anions have already been synthesized by deprotonation, dehalogenation, or transmetallation of the corresponding metaloles, and their structures have been discussed extensively by NMR, or X-ray structural analysis.…”

Silole‐Containing Conjugated Polymers

“…Siloles [7][8][9][10] or silacyclopentadienes are a group of five-membered silacyclics that possess σ * −π * conjugation arising from the interaction between the σ * orbital of two exocyclic σ -bonds on the silicon atom and the π * orbital of the butadiene moiety [11]. The calculated LUMO level of a silole ring is lower than that of other heterocyclopentadienes, such as pyrrole, furan, and thiophene [10,11].…”

“…Conjugated polymers are the best candidates that can be used to fabricate flexible optoelectronic devices [6]. A notable feature of conjugated polymers also lies in the enormous versatility of synthetic methodology, which affords wide scope to construct new polymers with improved properties.Siloles [7][8][9][10] or silacyclopentadienes are a group of five-membered silacyclics that possess σ * −π * conjugation arising from the interaction between the σ * orbital of two exocyclic σ -bonds on the silicon atom and the π * orbital of the butadiene moiety [11]. The calculated LUMO level of a silole ring is lower than that of other heterocyclopentadienes, such as pyrrole, furan, and thiophene [10,11].…”

Synthesis of 1,1-Bis(n-butyl, t-butyl)-2,3,4,5-Tetraphenyl-1-Silacyclopentadiene and NMR Study of Their 2,5-Carbodianions

“…In last decades a lot of group 14 metalloles have been prepared [1][2][3][4][5][6] . Especially their anions/dianions have been reported to be aromatic systems in experimental [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] and theoretical studies [26][27][28][29][30][31] except trimethylsilyl group substituted silole and germole anions [10,18,20] .…”