Temperature-dependent intensities of Raman bands of di-n-butylamine

✍ Scribed by L. A. E. Batista De Carvalho; A. M. Amorim Da Costa; J. J. C. Teixeira-Dias; Ester F. G. Barbosa; Isabel M. S. Lampreia

• Publisher: John Wiley and Sons
• Year: 1987
• Tongue: English
• Weight: 322 KB
• Volume: 18
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/jrs.1250180209

✦ Synopsis

Raman spectra of di-n-butylamine show bands whose temperature-dependent intensities clearly suggest the occurrence of different conformers in simultaneous equilibria. I n particular, the Raman spectrum of the solid phase is compared with that of n-nooane in order to identify the more stable conformation. lo additioo, inteosity ratios vs temperature for pairs of Raman bands in the CH stretching region exhibit a smooth variation between the liquid and solid. ' Q s/47. Temperature variation was carried out with a continuous flow cryostat (Oxford Instruments, Model CF 100) operating with liquid nitrogen. Samples were contained in 0.5 cm3 cylindrical cells and temperatures were recorded on a temperature controller.

Infrared spectra were recorded on a Perkin-Elmer spectrometer (Model 683) using potassium bromide cells at room temperature.