IR SPECTROSCOPY OF GLYCINE-WATER CLUSTERS IN HELIUM NANODROPLETS

2019 ◽  
Author(s):  
Nitish Pal ◽  
Martina Havenith ◽  
Lex van der Meer ◽  
Britta Redlich ◽  
Gerhard Schwaab ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Water Clusters ◽  
Helium Nanodroplets

scholarly journals Acid solvation versus dissociation at “stardust conditions”: Reaction sequence matters

2019 ◽  
Vol 5 (6) ◽  
pp. eaav8179 ◽  
Author(s):  
Devendra Mani ◽  
Ricardo Pérez de Tudela ◽  
Raffael Schwan ◽  
Nitish Pal ◽  
Saskia Körning ◽  
...  
Keyword(s):  
Molecular Evolution ◽  
Ir Spectroscopy ◽  
Theoretical Study ◽  
Water Clusters ◽  
Acid Dissociation ◽  
Reaction Sequence ◽  
Helium Nanodroplets ◽  
Interstellar Clouds ◽  
Ab Initio Simulations ◽  
Reaction Stoichiometry

Chemical reactions at ultralow temperatures are of fundamental importance to primordial molecular evolution as it occurs on icy mantles of dust nanoparticles or on ultracold water clusters in dense interstellar clouds. As we show, studying reactions in a stepwise manner in ultracold helium nanodroplets by mass-selective infrared (IR) spectroscopy provides an avenue to mimic these “stardust conditions” in the laboratory. In our joint experimental/theoretical study, in which we successively add H2O molecules to HCl, we disclose a unique IR fingerprint at 1337 cm−1 that heralds hydronium (H3O+) formation and, thus, acid dissociation generating solvated protons. In stark contrast, no reaction is observed when reversing the sequence by allowing HCl to interact with preformed small embryonic ice-like clusters. Our ab initio simulations demonstrate that not only reaction stoichiometry but also the reaction sequence needs to be explicitly considered to rationalize ultracold chemistry.

Ion-Molecule Reactions in Helium Nanodroplets Doped with C60and Water Clusters

2009 ◽  
Vol 48 (47) ◽  
pp. 8940-8943 ◽  
Author(s):  
Stephan Denifl ◽  
Fabio Zappa ◽  
Ingo Mähr ◽  
Filipe Ferreira da Silva ◽  
Abid Aleem ◽  
...  
Keyword(s):  
Water Clusters ◽  
Helium Nanodroplets ◽  
Ion Molecule Reactions

Stability and IR Spectroscopy of Zwitterionic Form of β-Alanine in Water Clusters

2019 ◽  
Author(s):  
Reyhaneh Ghassemizadeh ◽  
Brendan Moore ◽  
Takamasa Momose ◽  
Michael Walter
Keyword(s):  
Ir Spectroscopy ◽  
Water Clusters ◽  
Zwitterionic Form

A close competition between O–H⋯O and O–H⋯π hydrogen bonding: IR spectroscopy of anisole–methanol complex in helium nanodroplets

2020 ◽  
Vol 22 (39) ◽  
pp. 22408-22416
Author(s):  
Tarun Kumar Roy ◽  
Devendra Mani ◽  
Gerhard Schwaab ◽  
Martina Havenith
Keyword(s):  
Hydrogen Bonding ◽  
Ir Spectroscopy ◽  
Helium Nanodroplets

Anisole forms O–H⋯O as well O–H⋯π bound complexes with methanol.

High-Resolution IR Spectroscopy of Dimers of HDO with H2O in Helium Nanodroplets

2011 ◽  
Vol 115 (23) ◽  
pp. 6297-6305 ◽  
Author(s):  
Anna Gutberlet ◽  
Gerhard Schwaab ◽  
Martina Havenith
Keyword(s):  
High Resolution ◽  
Ir Spectroscopy ◽  
Helium Nanodroplets

Ion-Molecule Reactions in Helium Nanodroplets Doped with C60and Water Clusters

2009 ◽  
Vol 121 (47) ◽  
pp. 9102-9105 ◽  
Author(s):  
Stephan Denifl ◽  
Fabio Zappa ◽  
Ingo Mähr ◽  
Filipe Ferreira da Silva ◽  
Abid Aleem ◽  
...  
Keyword(s):  
Water Clusters ◽  
Helium Nanodroplets ◽  
Ion Molecule Reactions

scholarly journals Cold Reactions of Alkali-Metal and Water Clusters inside Helium Nanodroplets

2009 ◽  
Vol 102 (18) ◽  
Author(s):  
S. Müller ◽  
S. Krapf ◽  
Th. Koslowski ◽  
M. Mudrich ◽  
F. Stienkemeier
Keyword(s):  
Alkali Metal ◽  
Water Clusters ◽  
Helium Nanodroplets

scholarly journals IR spectroscopy of pyridine–water structures in helium nanodroplets

2014 ◽  
Vol 16 (18) ◽  
pp. 8384 ◽  
Author(s):  
Pablo Nieto ◽  
Melanie Letzner ◽  
Torsten Endres ◽  
Gerhard Schwaab ◽  
Martina Havenith
Keyword(s):  
Ir Spectroscopy ◽  
Helium Nanodroplets
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