190016-16-1Relevant academic research and scientific papers
Oligogermanes containing only electron-withdrawing substituents: Synthesis and properties
Zaitsev, Kirill V.,Lam, Kevin,Zhanabil, Zhaisan,Suleimen, Yerlan,Kharcheva, Anastasia V.,Tafeenko, Viktor A.,Oprunenko, Yuri F.,Poleshchuk, Oleg Kh,Lermontova, Elmira Kh,Churakov, Andrei V.
, p. 298 - 309 (2017/04/01)
A series of germanes Ar3GeX, containing electron-withdrawing substituents [Ar = p-FC6H4, 1a-d, 1a (X = Cl), 1b (X = Br), 1c (X = H), 1d (X = NMe2); p-F3CC6H4, 2a-d, 2a (X = Cl), 2b (X = Br), 2c (X = H), 2d (X = NMe2)], was synthesized and used to prepare symmetrical digermanes Ar3Ge-GeAr3, (p-FC6H4)3GeGe(C6H4F-p)3 (3), and (p-F3CC6H4)3GeGe(C6H4CF3-p)3 (4) and trigermane [(pF3CC6H4)3Ge]2Ge(C6F5)2 (5) by hydrogermolysis reaction. The properties of all compounds were investigated by multinuclear NMR and for oligogermanes by UV/vis and fluorescence spectroscopy, as well as by electrochemical methods. In addition, the molecular structures of 1a, 1b, 2b, 2c, and 3-5 were studied by X-ray diffraction analysis. Compound 5 showed a significantly shifted UV/visible absorption to the red field in comparison with previously described derivatives.
