| Abstract: | The conformational preferences of N‐3‐(acetylamino)‐2‐methyltrimethylene] acetamide and N‐5‐(acetylamino)‐(S)‐2‐methylpentamethylene]acetamide were investigated using ab initio computational methods. These are model compounds of a number of substituted nylons‐m,n containing a methyl side group in the diamine unit. A comparison with the results obtained for their linear analogues have allowed us to determine the influence of the methyl side group on the conformational preferences of aliphatic diamides. Furthermore, the conformations compatible with the electron and X‐ray diffraction data recently obtained for the related substituted nylons‐m,n were identified. |
