No abstract

The preparations of MexSi(GeH3)4-x (x = 3, 2, 1, 0) and MexGe(GeH3)4-x(x = 3, 2, 1), by reaction of dry GeH3Na with the corresponding chloride, have been refined. 1,2-Me2Ge3H6, 2,2-Me2Ge3H6 and 1,2,2-Me3Ge3H5 have been prepared by the successive reactions of I2 and MeMgI on MeGe3H7. Further unstable or minor products indicated in these reactions are (GeH3)4Si, 1,1,2,2-Me4Ge3H4 and 1,2,2,3-Me4Ge3H4 together with traces of other permethyltrigermanes . Vibrational, 1H n.m.r . and mass spectra of these species are reported together with 29Si and 73Ge n.m.r . observations on the MexSi(GeH3)4-x family.