The Mass Spectrometry society of Japan - The 68th Annual Conference on Mass Spectrometry, Japan
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Day 3, May 21（Fri.）　15:05-15:25　Room D (Zoom)

3D-O14-1505　　PDF

Structures of Dibenzo-Crown-Ether–(Na+, K+) Complexes Studied by Ion Mobility–Mass Spectrometry

(Tohoku Univ.)
oKeijiro Ohshimo, Xi He, Ryosuke Ito, Fuminori Misaizu

We performed cryogenic ion mobility-mass spectrometry to study dibenzo-crown-ether complexes with Na+ and K+ ions. Two bands were observed in distributions of collision cross section (CCS) of Na+ complexes. On the other hand, K+(dibenzo-30-crown-10) complex showed only one band. By comparing the experimental and theoretical CCSs of candidate structures, the two sets of conformers in Na+ complexes were assigned to open and closed forms in which benzene–benzene distances were long and short, respectively. For K+(dibenzo-30-crown-10), the one set of conformers was assigned to the closed forms.