Rotational Constants of GeH3D and GeHD3

The analysis of the rotational structure of the Ge–D stretching fundamental of GeH3D yields the following values: B′′=1.957, B′′−B′=0.0142±0.0017, ν0=1520.4±0.2 cm−1.A similar analysis of the Ge—H stretching mode in GeD3H yields for this molecule: B′′=1.665, B′′−B′=0.0128, ν0=2112.4±0.2 cm−1.The germanium-hydrogen distance obtained under the assumption that it is unchanged by isotopic substitution is 1.529±0.003 and 1.525±0.005 in GeH3D and GeHD3, respectively.