The Molecule, Spectra, and Physical Properties

The average Ge-C bond dissociation energy, D(Ge-C3H7) = 56.72 i 2 kcal/mol, has been calculated using AH (g) of Ge(C3H7)4 and the C3H7 radical and the heat of atomization of germanium [12]. 

IR and Raman spectra have been recorded for the neat liquid at room temperature and are listed in Table 5. IR spectra are depicted [7, 23]. IR spectra of the liquid at room temperature and the crystalline solid at 110°C (depicted) showed essential differences in the v(GeC) region (550 to 660 cm ), providing evidence for the presence of trans and gauche rotational isomers [23]. 

Ge(C3H7)4 is a colorless, mobile liquid at room temperature, whose odor somewhat resembles that of petroleum [1]. The temperature dependence of the density is expressed by the following equations  

The temperature dependence of the viscosity, log ri = 1445.9/T-4.6319, was obtained from the following selected data [33]  

Selected values of the cohesion energy and the solubility parameter 6 are listed below [43] for definitions, see Ge(CH3)4, p. 35. 

---