Leites Larissa A, Bukalov Sergey S, Zabula Alexander V, Garbuzova Irina A, Moser Daniel F, West Robert
Scientific and Technical Center on Raman Spectroscopy, Institute of Organo-Element Compounds, Russian Academy of Sciences, Moscow, Russia.
J Am Chem Soc. 2004 Apr 7;126(13):4114-5. doi: 10.1021/ja0317877.
For the stable germylene, N,N'-di-tert-butyl-1,3-diaza-2-germacyclopent-4-en-2-ylidene, 2, the Raman line for the cyclic C=C stretching mode is strongly enhanced and shifted to longer wavelength, compared with that in reference compounds. The enhancement and frequency shift are even greater than those found for the corresponding stable silylene 1. These results, along with NMR evidence and theoretical calculations, suggest that the aromatic electron delocalization is even greater in the germylene than that in the silylene.
对于稳定的亚锗烯N,N'-二叔丁基-1,3-二氮杂-2-锗杂环戊-4-烯-2-亚基（2），与参考化合物相比，环状C=C伸缩振动模式的拉曼谱线强烈增强并向更长波长移动。这种增强和频移甚至比相应的稳定亚硅烯1还要大。这些结果，连同核磁共振证据和理论计算，表明亚锗烯中的芳香电子离域比亚硅烯中的更大。
