Nuclear Magnetic Resonance Studies of Hydrosilanes. III. A Correlation of Hammett σ Constants with<sup>29</sup>Si–H Coupling Constants for Substituted Phenoxy- and (Phenylthio)dimethylsilanes
The 29Si–H couplingconstants and Si–H chemicalshifts have been determined for a series of substituted phenoxy- and (phenylthio)dimethylsilanes. The J(29Si–H) values are shown to be correlated well with the Hammett σ constants for the substituent on benzene ring in compounds Ar–Y–SiMe2H, where Y=O and S. In comparison with the data for the analogs of the other types of organodimethylsilanes, such