53445-89-9Relevant academic research and scientific papers
Stereochemistry of the insertion of manganese into Si-H and Ge-H bonds. Complexes containing a two-electron, three-center Mn?H?Si (or Ge) interaction
Carré, Francis,Colomer, Ernesto,Corriu, Robert J. P.,Vioux, André
, p. 1272 - 1278 (2008/10/08)
A crystallographic study of the complex (-)-(η5-CH3C5H4)(CO) 2(1-NpPhMeSi)(H)Mn (1,1-Np = 1-C10H7, Ph = C6H5, Me = CH3) reveals that the oxidative addition of (+)-1-NpPhMeSiH on methylcymantrene takes place with retention of configuration at silicon. The gennyl complexes (η5CH3C5H4)(CO) 2(R3Ge)(H)Mn are prepared either by oxidative addition of R3GeH (R = Ph) on (η5-CH3C5H4)(CO)3Mn or by protonation of the related anions [(η5-CH3C5H4)(CO) 2(R3Ge)Mn]- (R3 = Ph3, 1-NpPhMe, Cl3). Only the cis isomers are obtained. Complex 2 (R = Ph) exhibits a higher acidity than the silyl analogue. This acidity is close to that of HCl. However both 1 and 2 undergo easy elimination of R3SiH or R3GeH when treated with PPh3. The Mn-Ge bond is cleaved by H2O, CH3OH, Cl2, and CCl4; this behavior contrasts with that of 1 since Cl2 or CCl4 lead to elimination. These observations are in agreement with a two-electron, three-center bond between manganese, silicon (or germanium), and hydrogen.
ASSISTANCE NUCLEOPHILE DANS DES REACTIONS D'ORGANO-HALOGENO- ET -HALOGENO-HYDROGERMANES: GERMYLANIONS, GERMYLENES, DERIVES FONCTIONNELS DU GERMANIUM
Riviere, P.,Castel, A.,Satge, J.
, p. 123 - 136 (2007/10/02)
Substitution reactions of halogermanes under nucleophilic assistance of tertiary amines or diazo derivatives leading readily to various functional derivatives of germanium have been carried out.Dehydrohalogenation of acidic halohydrogemanes under nucleophilic assistance is a useful way to divalent species, and the germylenes formed are stabilized by complexation with the nucleophilic agent.The reactions proceed via intermediate halogermylanions which lead to the formation of more stable germylenes.The transient halogemylanions have been characterized by means of their nuclophilic additions to carbonyl derivatives.Nucleophilic substitutions of halogermanes using these germylanions lead to the formation of polygermanes.
