N-(4-Bromophenylsulfonyl)-2,2,2-trimethylacetamide

Abstract

The conformations of the N - H and C=O bonds in the SO2 - NH - CO - C group of the title compound (N4BPSTMAA), C11H14BrNO3S, are trans to each other, similar to what is observed in N-(4-chloro-phenyl-sulfon-yl)-2,2,2-trimethyl- acet-amide (N4CPSTMAA) and 2,2,2-trimethyl-N-(4-methyl-phenyl - sulfon-yl)acetamide (N4MPSTMAA). The bond para-meters in N4BPSTMAA are similar to those in N4CPSTMAA, N4MPSTMAA, N-aryl-2,2,2-trimethyl-acet-amides and 4-bromo-benzene-sulfonamide. The benzene ring and the SO2 - NH - CO - C group in N4BPSTMAA form a dihedral angle of 82.8 (1)°, comparable with the values of 82.2 (1)° in N4CPSTMAA and 71.2 (1)° in N4MPSTMAA. N - H⋯O hydrogen bonds form a centrosymmetric ring characterized by an R 2 2(8) motif.