The second orthorhombic polymorph of zwitterionic metanilic acid at 130 K

Graham Smith, Urs D. Wermuth, David J. Young, Jonathan M. White

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)o948-o950
Number of pages3
JournalActa Crystallographica Section E: Structure Reports Online
VolumeE62
Issue numberPart 3
DOIs
Publication statusPublished - 1 Mar 2006
Externally publishedYes

Fingerprint Dive into the research topics of 'The second orthorhombic polymorph of zwitterionic metanilic acid at 130 K'. Together they form a unique fingerprint.

  • Cite this