IR Spectroscopy of Molecular Ions by Nonthermal Ion Ejection from Helium Nanodroplets

2010 ◽  
Vol 132 (40) ◽  
pp. 14086-14091 ◽  
Author(s):  
Szymon Smolarek ◽  
Nils B. Brauer ◽  
Wybren J. Buma ◽  
Marcel Drabbels
Keyword(s):  
Ir Spectroscopy ◽  
Molecular Ions ◽  
Helium Nanodroplets

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.

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.

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

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 Mid-infrared spectroscopy of molecular ions in helium nanodroplets

2012 ◽  
Vol 136 (4) ◽  
pp. 044305 ◽  
Author(s):  
Xiaohang Zhang ◽  
Nils B. Brauer ◽  
Giel Berden ◽  
Anouk M. Rijs ◽  
Marcel Drabbels
Keyword(s):  
Infrared Spectroscopy ◽  
Molecular Ions ◽  
Helium Nanodroplets ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy

Electron Impact Ionization in Helium Nanodroplets:  Controlling Fragmentation by Active Cooling of Molecular Ions

2004 ◽  
Vol 126 (36) ◽  
pp. 11283-11292 ◽  
Author(s):  
William K. Lewis ◽  
Brian E. Applegate ◽  
Judit Sztáray ◽  
Bálint Sztáray ◽  
Tomas Baer ◽  
...  
Keyword(s):  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Molecular Ions ◽  
Helium Nanodroplets ◽  
Active Cooling

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

Shifting formic acid dimers into perspective: vibrational scrutiny in helium nanodroplets

2020 ◽  
Vol 22 (17) ◽  
pp. 9637-9646 ◽  
Author(s):  
Katharina A. E. Meyer ◽  
Julia A. Davies ◽  
Andrew M. Ellis
Keyword(s):  
Ir Spectroscopy ◽  
Formic Acid ◽  
Quantum Chemical Calculations ◽  
Superfluid Helium ◽  
Quantum Chemical ◽  
Helium Nanodroplets

A metastable dimer of formic acid has been prepared inside superfluid helium nanodroplets and examined using IR spectroscopy and quantum chemical calculations.

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