Raman and infrared band shapes of the NH+...X-hydrogen bond in trimethylaminium halide crystals

✍ Scribed by P.V. Huong; M. Schlaak

• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 234 KB
• Volume: 27
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(74)80456-2

✦ Synopsis

The infrared and Rnman band profile and band-\vidth of the crystalline halides (CH3)3NH+X-in lhc u(NH) stretching vibration region are analyzed with the help of the tempernture dependence nnd of the isotopic substitution effect. While the infrared v(M) band-width is several times larger than the Rnman linewidth in the pure substance, the widths are about the mrne in the isotopic diluted system (CHa),NII *Cl-/(CHJ)~ND+CI-. This result is arplnined by induced cooperative effects incrensing strongly the nnhnrmonicity of rhe eleclrical moment nnd not that of the polarizability of the NH oscillators.