Abstract
Precise values for electric dipole moments of isolated acetone and acetic acid molecules were determined from the Stark effect measurements made on lowest J rotational transitions at conditions of supersonic expansion. The new results are μtot = μb = 2.9345(22) D for acetone from measurements on the 111 ← 101 transition, and μa = 0.8631(8), μb = 1.4345(11), μtot = 1.6741(10) D for acetic acid, from measurements on 111 ← 000 and 101 ← 000 transitions. A comparison with previous determinations and with results of quantum chemical calculations is presented.
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