Observation of H-2 Aggregation onto a Doubly Charged Anion in a Temperature-Controlled Ion Trap
Journal Article
·
· Journal of Physical Chemistry A, 112(51):13271-13274
OSTI ID:949937
Hydrogen is the second most difficult gas to be condensed due to its weak intermolecular interactions. Here we report observation of H2 aggregation onto a doubly charged anion, –O2C(CH2)12CO2– (DC2–). Weakly-bound DC2–(H2)n clusters were formed in a temperature-controlled ion trap and studied using photoelectron spectroscopy. The onset of clustering was observed at 30 K, whereas extensive condensation was observed at 12 K with n up to 12. Photoelectron spectra were obtained for DC2–(H2)n (n = 0–6) at 193 and 266 nm. The spectra of DC2–(H2)n were observed to be identical to that of the bare DC2– dianion except a slight blue shift, indicating the weak interactions between H2 and the parent dianion. The blue shift on average amounts to ~34 meV (3.3 kJ/mol) per H2, which represents the lower limit of the H2 binding energy to DC2–.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 949937
- Report Number(s):
- PNNL-SA-63398; 25395; KC0301020
- Journal Information:
- Journal of Physical Chemistry A, 112(51):13271-13274, Journal Name: Journal of Physical Chemistry A, 112(51):13271-13274 Journal Issue: 51 Vol. 112
- Country of Publication:
- United States
- Language:
- English
Similar Records
Solvent-Mediated Folding of a Doubly Charged Anion
Photoelectron Imaging of Doubly Charged Anions, -O2C(CH2)nCO2- (n=2-8): Observation of Near 0 eV Electrons Due to Secondary Dissociative Autodetachment
Low-Temperature Photoelectron Spectroscopy of Aliphatic Dicarboxylate Monoanions, HO2C(CH2)nCO2-(n=1-10): Hydrogen Bond Induced Cyclization and Strain Energies
Journal Article
·
Tue Jan 27 23:00:00 EST 2004
· Journal of the American Chemical Society
·
OSTI ID:15007325
Photoelectron Imaging of Doubly Charged Anions, -O2C(CH2)nCO2- (n=2-8): Observation of Near 0 eV Electrons Due to Secondary Dissociative Autodetachment
Journal Article
·
Wed Mar 17 00:00:00 EDT 2010
· Journal of Physical Chemistry A, 114(13):4524-4530
·
OSTI ID:982007
Low-Temperature Photoelectron Spectroscopy of Aliphatic Dicarboxylate Monoanions, HO2C(CH2)nCO2-(n=1-10): Hydrogen Bond Induced Cyclization and Strain Energies
Journal Article
·
Thu Jun 29 00:00:00 EDT 2006
· Journal of Physical Chemistry A, 110(25):7801-7805
·
OSTI ID:887368