Morpholinium 2-chloro-4-nitrobenzoate, 2-chloro-5-nitrobenzoate and 4-chloro-3-nitrobenzoate

H Ishida; B Rahman; S Kashino

doi:10.1107/s0108270101016389

Morpholinium 2-chloro-4-nitrobenzoate, 2-chloro-5-nitrobenzoate and 4-chloro-3-nitrobenzoate

Acta Crystallogr C. 2001 Dec;57(Pt 12):1450-3. doi: 10.1107/s0108270101016389. Epub 2001 Dec 6.

Authors

H Ishida¹, B Rahman, S Kashino

Affiliation

¹ Department of Chemistry, Faculty of Science, Okayama University, Okayama 700-8530, Japan. ishidah@cc.okayama-u.ac.jp

PMID: 11740114
DOI: 10.1107/s0108270101016389

Abstract

Morpholinium 2-chloro-4-nitrobenzoate, C4H10NO+*C7H3ClNO4-, (I), crystallizes in a non-centrosymmetric space group. The cations and anions are connected by N-H...O hydrogen bonds to afford a 2(1) helical chain. Morpholinium 2-chloro-5-nitrobenzoate, C4H10NO+*C7H3ClNO4-, (II), and morpholinium 4-chloro-3-nitrobenzoate, C4H10NO+*C7H3ClNO4-, (III), both crystallize in a centrosymmetric space group. In (II) and (III), two cations and two anions are held together by N-H.O hydrogen bonds to form a centrosymmetric ring with graph-set descriptor R4(4)(12).