Abstract
The electric dipole moment of H 2SO 4 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 1 10 ← 0 00 transition. The total molecular dipole moment ( μ tot = μ c) 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 6 43 ← 5 33 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.
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