Multinuclear NMR spectroscopic studies of some organometallic N-substituted anilines
Abstract
Proton, carbon-13, nitrogen-15, fluorine-19, and silicon-29 NMR chemical shifts and coupling constants are reported for nine N-substituted anilines of the type XC H N(H)Y, where X H and F, and Y Si(CH ) , Ge(CH ) , Sn(CH ) , and P(BH )(CH ) , and the N isotopomer of N-trimethylsilylaniline. Resonances in the natural-abundance carbon-13 NMR spectra for both sets of derivatives are assigned on the basis of additivity relationships, proton-coupled spectra, and relative magnitudes of |J( P C)| and |J( F C)| coupling constants where appropriate. Carbon-13 and fluorine-19 chemical shifts, and | J( C H)| coupling constants indicate that the P(BH )(CH ) group is substantially electron-withdrawing. © 1992. 6 4 3 3 3 3 3 3 3 3 2 3 3 2 15 31 13 19 13 1 13 1
