Abstract

We searched for forbidden transitions in the microwave rotational spectrum of the (CD3)2CDOH molecule in the frequency range 17030–79050 MHz. The (CD3)2CDOH molecule has a symmetry plane containing the dipole moment components μ b and μ c , while μ a = 0. As a result of centrifugal distortion, in this type of molecule an induced dipole moment component μ a may appear perpendicular to the symmetry plane. We have observed forbidden “centrifugal” transitions in the (CD3)2CDOH molecule arising as a result of the induced component of the dipole moment. We have identified 92 μ a -transitions.

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