Tetramethyl germanium

Lopes, I. and Schmidt, W. E, Ionization of liquid tetramethyl germanium by Co-y-radiation, Z. Naturforsch., 45a, 832,1990. 

A plot of A7/y°(SnR4, g) against A///TRII, g), where R is alkyl, is presented in Figure 3 where the enthalpy-of-formation values used are both experimentally determined (Table 3) and calculated. The calculated values are for tetramethyl and tetraethyl tin and methane. As stated above, the enthalpy-of-formation values for tetraethyl tin may be incorrect. That the calculated value for tetraethyl tin results in a better linear fit with tetrapropyl and tetrabutyl tin is further confirmation of this supposition. And, as discussed for the alkyl germaniums, the methyl deviations of methane and tetramethyl tin are too different for their measured values to fit a linear relationship such as equation 7. 

Organogermanium compounds, including tetramethyl- and tetraethylgermanium, are used in the semiconductor industry to prepare deposits of germanium. Spirogermanium,... 

Waters, D. N., and L. A. Woodward Relative Raman intensities of the totally symmetrical vibrations of the tetramethyls of carbon, silicon, germanium, tin and lead in the vapour state. Proc. Roy. Soc. [London] A 246, 119—132 (1958). 

The addition of lithium naphthalenide to Bu jSiClj in DME results in a 1,4-etheno-2,3-di-silanaphthalene <830M1464> whilst a germanium analogue is prepared from benzyne and 3,6-diphenyl-1,1,2,2-tetramethyl-l,2-digermacyclohexa-3,5-diene <84TL2467>. 

Pollard et al used a flame ionization gauge to determine retention data for germanium tetramethyl. The apparatus and conditions are described in Chapter 2 (Section b). Tetramethylgermanium had the following specific retention volumes (Vgml) on a 15% E 301 silicone oil on celite column ... 

---