20645-23-2Relevant academic research and scientific papers
Convenient syntheses of aryl and perfluoroaryl trichlorogermanes and germatranes via an organotin route
Kultyshev, Roman G.,Prakash, G.K. Surya,Olah, George A.,Faller, Jack W.,Parr, Jonathan
, p. 3184 - 3188 (2008/10/09)
Aryl- and (perfluoroaryl)trichlorogermanes ArGeCl3(Ar = C 6H5, 2-FC6H4, 3,5-(CF 3)2C6H3, C6F5, 2,3,5,6-F4C5N) are easily obtained in 60-80% yields from the corresponding tributyl-stannanes and GeCl4 (1:1) at 150 °C in the absence of a solvent. Although the tin-to-germanium transmetalation of C6F5 group is sluggish, it is facilitated by addition of 1-2 mol % AIBN (2,2′-azobis(isobutyronitrile)).
Synthesis and molecular structure of phenyl and tolylgermatranes
Lukevics, Edmunds,Ignatovich, Luba,Belyakov, Sergey
, p. 222 - 230 (2007/10/03)
The crystals of arylgermatranes (R=H (I), 4-CH3 (II), 3-CH3 (III), 2-CH3 (IV)), have been obtained to study the influence of a substituent position on coordination of the germanium atom. Compounds I-IV were prepared by the insertion of GeBr2 into the carbon-bromine bond of the corresponding arylbromide, conversion of aryltribromogermanes to triethoxy derivatives by alcoholysis and their transalkoxylation with triethanolamine to germatranes; or by the condensation of halobenzene with GeCl4 in the presence of copper powder followed by alcoholysis and cyclization. The crystal structure of compounds I-IV was studied via the X-ray diffraction method. The intramolecular donor-acceptor bond Ge←N in arylgermatranes (2.212-2.230 A) is longer than that in the corresponding furyl- and thienylgermatranes. Introduction of a substituent into o-position of the benzene ring decreases the N-Ge-C angle value from 177.5 to 144.2°. The quantum chemical calculations were performed to investigate structures I-IV in isolated molecules.
