Pseudohalogen chemistry. IX—Substituent constants (Z) for the isothiocyanato group in the estimation of the chemical shifts of vinyl protons inα,β-unsaturated isothiocyanates

Pseudohalogen chemistry. VIII—Substituen

Pseudohalogen chemistry. VIII—Substituent constants (Z) for the thiocyanato group in the estimation of the chemical shifts of vinyl protons in α,β-unsaturated thiocyanates

✍ Robert G. Guy 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 188 KB

Substituent constants for the thiocyanato group (q:: = 0.94, ZEN = 0.45 and c:zs = 0.41) have heen derived by an additivity procedure, and shown to reproduce the chemical shifts of vinyl protons in a wide variety of a,fL unsaturated thiocyanates with an accuracy of kO.30 ppm in 94% of the cases stud