Zwitterionic 5-amino-2-naphthalenesulfonic acid

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

Research output: Contribution to journalArticlepeer-review


The crystal structure of 5-amino-2-naphthalenesulfonic acid (1,6-Cleve's acid), C10H9NO3S, shows the presence of a sulfonate-aminium group zwitterion, viz. 5-ammonio-2-naphthalenesulfonate. All aminium H atoms are involved in head-to-tail intermolecular hydrogen-bonding interactions with separate sulfonate O-atom acceptors, giving a three-dimensional framework polymer structure.

Original languageEnglish
Pages (from-to)o2014-o2016
Number of pages3
JournalActa Crystallographica Section E: Structure Reports Online
Issue numberPart 11
Publication statusPublished - 1 Nov 2004
Externally publishedYes


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