An electron diffraction determination of the molecular structures of trigermylphosphine and trisilylstibine in the gas phase

The molecular structures of gaseous (GeH3)3P and (SiH3)3Sb have been determined by the sector-microphotometer method of electron diffraction. The heavy atom skeletons are found to be pyramidal; the GeP distance is 2·308±0·003 Å and the GePGe angle is 95·39±0·05°; the SiSb distance is 2·557±0·004 Å and the SiSbSi angle is 88·6±0·2°.