Reactive intermediates in 4He nanodroplets: Infrared laser Stark spectroscopy of dihydroxycarbene
Journal Article
·
· Journal of Chemical Physics
- Univ. of Georgia, Athens, GA (United States); University of Georgia, Athens, GA
- Univ. of Texas at Austin, Austin, TX (United States)
- Univ. of Georgia, Athens, GA (United States)
Singlet dihydroxycarbene (HO$$\ddot C$$OH) is produced via pyrolytic decomposition of oxalic acid, captured by helium nanodroplets, and probed with infrared laser Stark spectroscopy. Rovibrational bands in the OH stretch region are assigned to either trans, trans-or trans, cis-rotamers on the basis of symmetry type, nuclear spin statistical weights, and comparisons to electronic structure theory calculations. Stark spectroscopy provides the inertial components of the permanent electric dipole moments for these rotamers. The dipole components for trans, trans-and trans, cis-rotamers are (μa, μb) = (0.00,0.68(6)) and (1.63(3), 1.50(5)), respectively. The infrared spectra lack evidence for the higher energy cis,cis-rotamer, which is consistent with a previously proposed pyrolytic decomposition mechanism of oxalic acid and computations of HO$$\ddot C$$OH torsional interconversion and tautomerization barriers.
- Research Organization:
- Univ. of Georgia Research Foundation, Athens, GA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- SC0008086
- OSTI ID:
- 1409052
- Alternate ID(s):
- OSTI ID: 1228594
OSTI ID: 22415640
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 14 Vol. 142; ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Interaction of N -Heterocyclic Carbenes and Simple Carbenes with Small Molecules (One to Three Atoms) Excluding Metals: Formation of Covalent C-X Bonds: Interaction of N -heterocyclic Carbenes and Simple Carbenes with Small Molecules (One to Three Atoms) Excluding Metals: Formation of Covalent C-X Bonds
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journal | December 2018 |
Infrared spectroscopy in superfluid helium droplets
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journal | December 2018 |
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