Résumé
A series of N,N′-linked 1,2-ethanediyl-poly(benzimidazolin-2-ones) that can be classified as podands, are described. Seven dimers (
21–27), three trimers (
28–30), a cyclic tetramer (
31) and an open-chain benzimidazolin-2-one heptamer (
32) have been prepared and characterized by
1H,
13C NMR and by MS. The crystal and molecular structure of the trimer, 1,3-bis-2-(2-oxobenzimidazol-1-yl)ethyl-2-oxobenzimidazole monohydrate (
30) has been solved by X-Ray analysis. The benzi-midazolin-2-one fragments display a pattern of bond distances and angles similar to that of analogue derivatives retrieved form the CSD. The molecules are hydrogen bonded to four others in a continuous two-dimensional network by NH…OC and CH…OC interactions in which all NH donors and OC acceptors are involved.
A series of
N,
N′-linked 1,2-ethanediyl-poly(benzimidazolin-2-ones) derivatives have been prepared and characterized by
1H,
13C NMR and by MS: seven dimers (
21–27), three trimers (
28–30), a cyclic tetramer (
31) and an open-chain benzimidazolin-2-one heptamer (
32). The crystal and molecular structure of the trimer (
30) monohydrate has been solved by X-Ray analysis.