in tetrahydrofuran
(Ar); soln. of Mg compd. in THF was added dropwise to soln. of Ge compd.in THF; stirred at 45°C for 24 h; washed (H2O, Et2O); dried (CaCl2); distd.;
Kolesnikow; Dawydowa
Zhurnal Obshchei Khimii, 1959 , vol. 29, p. 2042,2044;engl.Ausg.S.2011
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Mazerolles; Lesbre
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1959 , vol. 248, p. 2018,2020