Abstract

AbstractThe molecular addition compounds of tin (iv) chloride with N, N‐dimethyl formamide, acetamide, acetanilide, and benzamide have been prepared. They are of the type SnCl4 · 2 amide. This composition type has been confirmed by indicator titrations of stannic chloride against amides in dichloroethane. Conductivity measurements in nitromethane and molecular weight determinations show that they are true molecular addition compounds being monomeric.The infrared spectra of the adducts show that there are metal‐to‐oxygen bonds in all these compounds as is evidenced by a negative shift of the carbonyl stretching frequency and a positive shift of the CN stretching frequency. The relative donor ability of the amides towards stannic chloride has been found to be: dimethyl formamide > benzamide > acetanilide > acetamide.

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