Crystal structures of the homologues diethyl and dimethyl (10H-indeno­[1,2-b]quinoxalin-11-yl)phospho­nate: use of non-spherical scattering factors

Eldeken, G.A.; El-Samahy, F.A.; Zayed, E.M.; Osman, F.H.; Mahmoud, K.; Elgemeie, G.H.; Jones, P.G.

doi:10.1107/S2056989026001842

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 5
The dimeric unit of compound 4a, showing the classical hydrogen bonds (thick dashed lines), with a weaker component of a three-centre system and a weak C—H⋯O contact (thin dashed lines). Hydrogen atoms not involved in H bonding are omitted. Atom labels indicate the asymmetric unit. See Section 3 for more information.

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 82| Part 4| April 2026| Pages 320-325

https://doi.org/10.1107/S2056989026001842

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