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2,3-Bis(4-ethoxy-phen-yl)quinoxaline.

ABSTRACT: The title compound, C(24)H(22)N(2)O(2), was prepared by condensation of 1,2-bis-(4-ethoxy-phen-yl)ethane-1,2-dione and 1,2-diamino-benzene. The asymmetric unit contains one half-mol-ecule, close to a twofold axis. The plane of the quinoxaline ring is twisted with respect to the planes of the two ethoxy-phenyl ring systems, exhibiting dihedral angles of 39.95?(9)°. The crystal packing is dominated by weak C-H?? inter-actions. No classical hydrogen bonds or stacking inter-actions are observed.

SUBMITTER: Ye PP

PROVIDER: S-EPMC2980160 | biostudies-literature | 2009 Dec

REPOSITORIES: biostudies-literature

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2,3-Bis(4-ethoxy-phen-yl)quinoxaline.

Ye Ping-Ping PP Zhang Cai-Li CL Du Zhi-Qiang ZQ

Acta crystallographica. Section E, Structure reports online 20091212 Pt 1

The title compound, C(24)H(22)N(2)O(2), was prepared by condensation of 1,2-bis-(4-ethoxy-phen-yl)ethane-1,2-dione and 1,2-diamino-benzene. The asymmetric unit contains one half-mol-ecule, close to a twofold axis. The plane of the quinoxaline ring is twisted with respect to the planes of the two ethoxy-phenyl ring systems, exhibiting dihedral angles of 39.95 (9)°. The crystal packing is dominated by weak C-H⋯π inter-actions. No classical hydrogen bonds or stacking inter-actions are observed. ...[more]

PMID: 21580021

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