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The pure rotational spectrum of the nerve agent Soman has been recorded using a pulsed-molecular-beam Fourier-transform microwave spectrometer. The spectrum consists of transitions from two different isomers. The two distinguishable isomers are likely the [SS] (or [RR]) and the [RS] (or [SR]) diastereomers that result from the two chiral centers in the molecule. The rotational constants determined...
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