19F substituent chemical shifts of the fluorophenyldiphenylsilanes and the carbon analogs

Correlation of nmr Chemical Shifts with Hammett σ Values and Analogous Parameters

“…145 Central to the problem of relating chemical shifts for aliphatic systems to electronic effects (supposing that perturbing factors can be allowed for) is the nature of the inductive effect itself. For correlations for aromatic compounds only a dipole-field effect (including 7r polarization) is important (four or more bonds between probe nucleus and substituent).…”

SnCl4‐Induced Unsymmetrical Cleavage of Bis(N,N‐diethylcarbamoyltelluro)‐arylmethanes: Generation of Tellurobenzaldehydes

“…In addition, treatment of 5e (R 2 = p ‐FC 6 H 4 ) with SnCl 4 (1.5 mol) in benzene at R.T. afforded an unexpected triarylmethane 9e (R 2 = p ‐FC 6 H 4 ) in 12% yield besides a complex mixture. Furthermore, the similar reaction of 5e with SnCl 4 carried out in CH 2 Cl 2 in the presence of an excess amount of allyltrimethylsilane at –78°C afforded unstable Te ‐allyl N,N ‐diethyltellurocarbamate ( 10 ) in 12% yield besides several uncharacterized products.…”