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Crystal structure of dimethyl N,N'-[(ethyne-1,2-di-yl)bis-(1,4-phenyl-enecarbon-yl)]bis-(l-alaninate).

ABSTRACT: The di-phenyl-ethyne unit of the title mol-ecule, C₂₄H₂₄N₂O₆, deviates slightly from planarity. The l-alanine moieties adopt distorted helical conformations of opposite winding direction. Infinite ribbons of N-H⋯O=C-connected mol-ecules represent the basic supra-molecular entities of the crystal structure. These aggregates are linked by C-H⋯O hydrogen bonds involving the oxygen atoms of the methyl carboxyl-ate units. The crystal studied was refined as an inversion twin.

SUBMITTER: Eissmann F

PROVIDER: S-EPMC6658949 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Crystal structure of dimethyl N,N'-[(ethyne-1,2-di-yl)bis-(1,4-phenyl-enecarbon-yl)]bis-(l-alaninate).

Eissmann Frank F Seichter Wilhelm W Weber Edwin E

Acta crystallographica. Section E, Crystallographic communications 20190510 Pt 6

The di-phenyl-ethyne unit of the title mol-ecule, C24H24N2O6, deviates slightly from planarity. The l-alanine moieties adopt distorted helical conformations of opposite winding direction. Infinite ribbons of N-H⋯O=C-connected mol-ecules represent the basic supra-molecular entities of the crystal structure. These aggregates are linked by C-H⋯O hydrogen bonds involving the oxygen atoms of the methyl carboxyl-ate units. The crystal studied was refined as ...[more]

PMID: 31391959

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