Effekt der Germaniumisotope auf die chemische Verschiebung von 19F in Difluordimethylgerman und von 13C in Tetramethylgerman / Germanium Isotope Effect on the 19F Chemical Shift in Difluorodimethylgerm ane and the 13C Chemical Shift in Tetram ethylgermane

Abstract

Abstract An isotope effect of about -0.8 Hz at 188 MHz ( - 4 ppb) per two mass units on the 19F chemical shift in Me2GeF2 due to directly bonded 70Ge/ 72Ge/74Ge/76Ge has been observed. The analogous isotope effect on the 13C chemical shift in Me4Ge is about -0.045 Hz at 100.6 MHz (-0.45 ppb).