Hydrogen Bond Networks Formed by Several Dozens to Hundreds of Molecules in the Gas Phase

摘要: Infrared spectroscopy was applied to neutral and protonated clusters of fundamental protic molecules, water, methanol (MeOH), ammonia, in the size range dozens hundreds. For (H2O)n (MeOH)n clusters, a phenol molecule introduced as chromophore for resonant multiphoton ionization detection, infrared-ultraviolet double-resonance scheme with mass spectrometry used perform moderately size-selective infrared OH stretch region. spectra (NH3)n NH region were also measured same scheme, but without addition chromophore. H+(H2O)n, H+(MeOH)n, H+(NH3)n, dissociation observe definitely these large The dependence hydrogen bond networks is discussed on basis observed spectra. Convergence those seen increasing size, convergence tells us maximum influence excess proton surrounding network. large-sized bulk seen, network discussed.