2117-36-4Relevant articles and documents
Structure/property relationships in branched oligogermanes. Preparation of (Me3Ge)3GePh, (Me2ButGe)3GePh, and (Me2PhGe)3GePh and investigation of their properties by spectroscopi
Komanduri, Sangeetha P.,Shumaker, F. Alexander,Hallenbeck, Sydney A.,Knight, Cody J.,Yoder, Claude H.,Buckwalter, Beth A.,Dufresne, Craig P.,Fernandez, Erico J.,Kaffel, Christopher A.,Nazareno, Ryan E.,Neu, Marshall,Reeves, Geoffrey,Rivard, James T.,Shackelford, Lance J.,Weinert, Charles S.
, p. 104 - 113 (2017/08/02)
The three branched oligogermanes (Me3Ge)3GePh, (Me2ButGe)3GePh, and (Me2PhGe)3GePh were synthesized via the hydrogermolysis reaction and were characterized by NMR (1H,
Reactivity of dianionic hexacoordinate germanium complexes toward organometallic reagents. A new route to organogermanes
Cerveau,Chuit,Corriu,Reyé
, p. 1510 - 1515 (2008/10/08)
Lithium and potassium tris(benzene-1,2-diolato)germanates (2a and 2b, respectively) and potassium tris(butane-2,3-diolato)germanate (3) are easily prepared from GeO2 in quantitative yields. They are very reactive toward organometallic reagents, the reactivity depending on the ligands on the germanium. Complexes 2 react with an excess of Grignard reagent to give the corresponding tetraorganogermanes R4Ge while the less reactive complex 3 leads to the functional triorganogermanes R3GeX. Tetraorganogermanes can also be prepared from complex 2b by reaction with organic bromides in the presence of Mg (Barbier reaction). The influence of Cp2TiCl2 and MgBr2 on the reactivity of Grignard reagents with these complexes was also investigated: in both cases formation of triorganogermanes was favored.
REACTIVITY OF ALLYLIC AND VINYLIC SILANES, GERMANES, STANNANES AND PLUMBANES TOWARD SH2' OR SH2 SUBSTITUTION BY CARBON- OR HETEROATOM-CENTERED FREE RADICALS
Light, James P.,Ridenour, Michael,Beard, Lois,Hershberger, James W.
, p. 17 - 24 (2007/10/02)
Compounds of the type CH2=CHCH2MR3 and (E)-PhCH=CHMR3 (M = Si, Ge, Sn, Pb) were allowed to react with a series of heteroatom-centered radicals (PhY*, Y = S, Se, Te, derived from PhYYPh) and carbon-centered radicals ((CH3)2CH* derived from (CH3)2CHHgCl).We report that alkenylplumbanes and, under forcing conditions, alkenylgermanes undergo SH2 or SH2' substitution of the metal by chain mechanism analogous to those previously reported for alkenylstannanes.Alkenylsilanes are unreactive.Based solely upon product yields, the following trends were observed: The reactivity of the alkenylmetals follow the order metal = Pb > Sn > Ge (> Si).The allylmetals were more reactive then the β-metallostyrenes toward the reactants employed in this study.The chalcogen series PhYYPh exhibits the reactivity order Y = S > Se > Te.
