Infrared Spectra of Allenic Compounds

Formation of Molecular Templates Containing Cumulative Double Bonds (CCC) at Organic/Silicon Hybrid Interfaces

“…The major spectroscopic change is the appearance of a new peak at 1921 cm -1 , ascribed to the characteristic vibration of a CdCdC skeleton (asymmetric stretching mode). [18][19][20] This assignment is further supported by the concurrent observation of its torsion (846 cm -1 ) and bending (361 cm -1 ) modes. Furthermore, the two new peaks at 626 and 714 cm -1 are ascribed to the Si-C and Si-O stretching modes, 11,21 respectively.…”

Über eine neuartige Synthese von β‐Ketoallenen durch Reaktion von tertiären Acetylencarbinolen mit Vinyläthern eine ergiebige methode zur darstellung des Pseudojonons und verwandter verbindungen

“…Im Infrarot besitzt 3 bei 5,06 ,u eine typische Allenbande (vgl. [7]). Auch das Phenylsemicarbazon von 3, Smp.…”

Asymmetric Allenophanes: Synthesis of a Tris‐meta‐allenophane and Tetrakis‐meta‐allenophane by Sequential Cross‐Coupling

“…[18] This characteristic signal is observed as a sharp band at 2150 cm À1 for allene 13. [18] This characteristic signal is observed as a sharp band at 2150 cm À1 for allene 13.…”

“…Allenic compounds usually display a unique antisymmetrical C = C = C IR stretching band in the region of 1950-2150 cm À1 . [18] This characteristic signal is observed as a sharp band at 2150 cm À1 for allene 13. We were initially surprised to observe no distinct corresponding band for macrocycle 3.…”