Synthesis and crystal structures of 1-benzoyl-4-(4-nitro-phen-yl)piperazine and 1-(4-bromo-benzo-yl)-4-phenyl-piperazine at 90 K.

ABSTRACT: Synthesis and crystal structures of 1-benzoyl-4-(4-nitro-phen-yl)piperazine, C₁₇H₁₇N₃O₃, (I) and 1-(4-bromo-benzo-yl)-4-phenyl-piperazine, C₁₇H₁₇BrN₂O, (II) are described. Compounds I and II crystallize in the ortho-rhom-bic and monoclinic crystal systems with space groups Pna2₁ (Z' = 2, I) and P2₁ (Z' = 1, II), respectively. The crystal of II was a two-component aggregate, treated as a 'twin' for data-acquisition purposes. There are no conventional hydrogen bonds in either I or II, but there are weaker C-H⋯O contacts. Each mol-ecule consists of a central piperazine ring in a chair conformation, with ei

SUBMITTER: Archana SD 

PROVIDER: S-EPMC9535836 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature