NMR Spectra of Organogermanium Compounds. X. Syntheses,13C and73Ge NMR Spectra and Molecular Mechanics Calculations of Germacyclopentanes and Germacyclopentenes
Matrix Isolation of Germacyclopentadienes: Direct Spectroscopic Evidence for Germylene-to-Germene Photochemical Interconversion
作者:Valery N. Khabashesku、Sergei E. Boganov、Dean Antic、Oleg M. Nefedov、Josef Michl
DOI:10.1021/om960372+
日期:1996.10.29
5b) and 2H-germole (1-germacyclopenta-1,3-diene; 6b) as minor products. During irradiation at selected wavelengths a photoconversion of 1b into 5b and reversible interconversion of 2b and 6b have been observed and provide experimental evidence for a germylene-to-germene rearrangement. Similar experiments were carried out on deuterated analogues, and the precursor 4b-d6 produced 1b-d6, 2b-d6, 5b-d6, and
紫外光照射的基质分离的1,1-二叠氮基-1- Gercyclocyclopent-3-ene(4b)产生1 H -Germole(1-germacyclopenta-2,4-diene; 1b)和1-germacyclopent-3-ene-1 ,1-二基(2b)作为主要产品,以及3 H -germole(1-germacyclopenta-1,4-diene; 5b)和2 H -germole(1-germacyclopenta-1,3-diene; 6b)是次要产品。在选定波长的辐射过程中,光从1b转换为5b以及可逆的2b和6b相互转换已观察到并为胚芽到锗的重排提供了实验证据。类似的实验在氘化的类似物进行,并且所述前体4B - d 6产生1B - d 6,2B - d 6,图5b - d 6,和图6b - d 6。基于对这些分子及其d的受限Hartree-Fock(DZ + d)计算,
Direct Synthesis of Organotrichlorogermanes by the Reaction of Elemental Germanium, Hydrogen Chloride, and Alkene
The reaction of elemental germanium, hydrogenchloride, and ethylene with copper(I) chloride catalyst gave ethyltrichlorogermane with a 66% selectivity, tetrachlorogermane also being formed. The addition of tetrachlorogermane to the reaction system increased the formation rate of ethyltrichlorogermane. The reaction of germanium, tetrachlorogermane, and butadiene resulted in the formation of 1,1-di