Electric dipole moment of sulfuric acid from Fourier transform microwave spectroscopy

Galen Sedo, Jane Schultz, Kenneth R. Leopold

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The electric dipole moment of H2SO4 in the gas phase has been measured using pulsed-nozzle Fourier transform microwave spectroscopy. Ninety one Stark-shifted frequencies at a series of electric field strengths have been recorded for the 110 ← 000 transition. The total molecular dipole moment (μtot = μc) was determined to be 2.9643(67) D. This is approximately 0.24 D greater than the previous literature value obtained from similar measurements on the 643 ← 533 transition. Both ab initio and DFT calculations using Dunning's aug-cc-pVnZ (n = D, T, Q, Q+d) basis sets concur with the present result.

Original languageEnglish (US)
Pages (from-to)4-8
Number of pages5
JournalJournal of molecular spectroscopy
Volume251
Issue number1-2
DOIs
StatePublished - Sep 2008

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation (Grant # CHE-0514256), the donors of the Petroleum Research Fund, administered by the American Chemical Society, and the Minnesota Supercomputer Institute. We are grateful to Professor Chris Cramer for helpful advice.

Keywords

  • Dipole moment
  • Microwave
  • Nucleation
  • Sulfuric acid

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