Infrared multiple photon dissociation spectra of methanol-attached anions and proton-bound dimer cations

✍ Scribed by Dilrukshi M. Peiris; José M. Riveros; John R. Eyler

• Book ID: 104307549
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 995 KB
• Volume: 159
• Category: Article
• ISSN: 0168-1176
• DOI: 10.1016/s0168-1176(96)04449-7

✦ Synopsis

The infrared absorption spectra of several gas-phase ions solvated by a single methanol molecule have been determined indirectly by infrared multiple photon dissociation (IRMPD) spectroscopy. A modified White-type multi-pass cell was used in a Fourier transform ion cyclotron resonance mass spectrometer to record the disappearance of the parent ion as a function of the wavelength of a tunable CO? laser operating in the range of 920-1060 cm-'. Spectra were obtained for fluoride, chloride and methoxide anions to which either a methanol or a d-methanol molecule was attached. In addition, spectra of proton-bound methanol and d-methanol dimer cations are presented. The shifts in the IRMPD peak frequencies are compared with the respective neutral infrared spectra. A consistent and interesting splitting is observed in the case of ions to which a methanol-d t molecule is attached.