Abstract
The low-temperature (130 K) crystal structure of the second orthorhombic polymorph of metanilic acid (3-aminobenzenesulfonic acid), C6H 7NO3S, shows the presence of two independent and conformationally similar molecules of the zwitterionic acid (3- ammoniobenzenesulfonate) in the asymmetric unit; these interact through hydrogen bonding to give a cyclic R2 2(14) association. Peripheral hydrogen bonding gives a three-dimensional framework polymer, such as was found in the earlier polymorph [Hall & Maslen (1965), Acta Cryst. 18, 301-306], but the overall structural make-up is significantly different.
| Original language | English |
|---|---|
| Pages (from-to) | o948-o950 |
| Number of pages | 3 |
| Journal | Acta Crystallographica Section E: Structure Reports Online |
| Volume | E62 |
| Issue number | Part 3 |
| DOIs | |
| Publication status | Published - 1 Mar 2006 |
| Externally published | Yes |
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Smith, G., Wermuth, U. D., Young, D. J., & White, J. M. (2006). The second orthorhombic polymorph of zwitterionic metanilic acid at 130 K. Acta Crystallographica Section E: Structure Reports Online, E62(Part 3), o948-o950. https://doi.org/10.1107/S1600536806003953