The ν3 infrared spectrum of the HeNH4+ complex

✍ Scribed by O. Dopfer; S.A. Nizkorodov; M. Meuwly; E.J. Bieske; J.P. Maier

• Book ID: 103037860
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 432 KB
• Volume: 260
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(96)00919-0

✦ Synopsis

The mid-infrared spectrum of the ionic complex He-NH~-has been recorded in the vicinity of the triply degenerate v 3 (t 2) vibration of the free ammonium ion. Apart from a small blue shift ( = 0.7 cm-~), the spectrum of the complex closely resembles that of the monomer. Ab initio calculations predict a vertex-bound minimum structure with an intermolecular well depth D e = 150 cm-l, a center-of-mass separation of R e ~-3.17 A and barriers for internal rotation less than 30 cm-i.