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Title: Infrared laser Stark spectroscopy of hydroxymethoxycarbene in 4He nanodroplets

Journal Article · · Chemical Physics Letters

Hydroxymethoxycarbene, CH3OCOH, was produced via pyrolysis of monomethyl oxalate and subsequently isolated in 4He nanodroplets. Infrared laser spectroscopy reveals two rotationally resolved a,b-hybrid bands in the OH-stretch region, which are assigned to trans,trans- and cis,trans-rotamers. Stark spectroscopy of the trans,trans-OH stretch band provides the a-axis inertial component of the dipole moment, namely μa = 0.62(7) D. Here, the computed equilibrium dipole moment agrees well with the expectation value determined from experiment, consistent with a semi-rigid CH3OCOH backbone computed via a potential energy scan at the B3LYP/cc-pVTZ level of theory, which reveals substantial conformer interconversion barriers of ≈17 kcal/mol.

Research Organization:
Univ. of Georgia, Athens, GA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0008086; FG02-12ER16298
OSTI ID:
1409054
Alternate ID(s):
OSTI ID: 1244119
Journal Information:
Chemical Physics Letters, Vol. 639, Issue C; ISSN 0009-2614
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

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Infrared spectroscopy in superfluid helium droplets journal December 2018