Rotational Constants of SiH3D

The analysis of the rotational structure of the Si — D stretching fundamental yields the following values: B′′=2.11±0.01 cm−1, B′′−B′=0.019 cm−1, ν0=1594.4±0.1 cm−1.The value of the Si — H distance obtained under the assumption that it remains unchanged by isotopic substitution is dSi−H=1.477±0.003 A.