caa a22 4500 475758331 CHVBK 20180406123543.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1007/BF02499080 doi (NATIONALLICENCE)springer-10.1007/BF02499080 Synthesis, crystal and molecular structures, and steroechemical nonrigidity of N -(chlorodimethylgermylmethyl)-and N -(bromodimethylgermylmethyl)- N -[( S )-1-phenylethyl]acetamides and N -(chlorodimethylgermylmethyl)-4-phenyl-2-pyrrolidone [Elektronische Daten] [S. Bylikin, S. Pogozhikh, V. Khrustalev, Vad Negrebetsky, A. Shipov, Yu. Ovchinnikov, Yu. Baukov] RacemicN-(chlorodimethylgermylmethyl)-4-phenyl-2-pyrrolidone and the first optically active amide derivatives containing the asymmetrical carbon atom and the five-coordinate germanium atom,viz.,N-(chlorodimethylgermylmethyl)- andN-(bromodimethylgermyl-methyl)-N-[(S)-1-phenylethyl] acetamides, were synthesized. Their structures were established by X-ray diffraction analysis. The geometric characteristics of the trigonal-bipyramidal valence environment about the germanium atoms are compared with those of analogous enantiomeric silicon compounds and the related five-coordinate germanium compounds. The barriers to permutational isomerization of the title compounds were determined by dynamic1H NMR spectroscopy. It was found that these barriers are higher than those of the corresponding silicon analogs. Kluwer Academic/Plenum Publishers, 2000 five-coordinate germanium compounds, synthesis, X-ray diffraction study nationallicence stereochemical nonrigidity, dynamic and multinuclear NMR spectroscopy nationallicence optical activity nationallicence Bylikin S. Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut Pogozhikh S. V. I. Lenin Moscow State Pedagogical University, 1 ul. M. Pirogovskaya, 119891, Moscow, Russian Federation aut Khrustalev V. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation aut Negrebetsky Vad Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut Shipov A. Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut Ovchinnikov Yu A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation aut Baukov Yu Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/1(2000-01-01), 140-147 1066-5285 49:1<140 2000 49 11172 https://doi.org/10.1007/BF02499080 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02499080 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bylikin S. Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Pogozhikh S. V. I. Lenin Moscow State Pedagogical University, 1 ul. M. Pirogovskaya, 119891, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Khrustalev V. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Negrebetsky Vad Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Shipov A. Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Ovchinnikov Yu A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813, Moscow, Russian Federation aut NATIONALLICENCE 700 1- Baukov Yu Russian State Medical University, 1 ul. Ostrovityanova, 117869, Moscow, Russian Federation aut NATIONALLICENCE 773 0- Russian Chemical Bulletin Kluwer Academic Publishers-Plenum Publishers 49/1(2000-01-01), 140-147 1066-5285 49:1<140 2000 49 11172 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer