Crystal structures of two C,N-disubstituted acetamides: 2-(4-chlorophenyl)-N-(2-iodophenyl)acetamide and 2-(4-chlorophenyl)-N-(pyrazin-2-yl)acetamide

Abstract

In the crystal of 2-(4-chlorophenyl)-N-(2-iodophenyl)acetamide, C14H11ClINO, molecules are linked by a combination of N - H⋯O and C - H⋯O hydrogen bonds to form a C(4)C(4)[R 2 1(7)] chain of rings and chains of this type are linked by a combination of C - Cl⋯π(arene) and C - I⋯π(arene) interactions to form deeply puckered twofold interwoven sheets. In the crystal of 2-(4-chlorophenyl)-N-(pyrazin-2-yl)acetamide, C12H10ClN3O, molecules are linked into complex sheets by N - H⋯N, C - H⋯N and C - H⋯O hydrogen bonds, and by C - H⋯π(arene) interactions.