Ammonium and isopropylammonium salts of the fumaric acid dianion

Hiroyuki Hosomi, Yoshikatsu Ito, Shigeru Ohba

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19 Citations (Scopus)


The crystal structures of diammonium fumarate, 2NH4+.C4H2O42- (I), and bis(isopropylammonium) fumarate, 2C3H7NH3+.C4H 2O42-, (II), have been determined. The intermolecular N-H⋯O hydrogen bonds form a three-dimensional network in (I), whereas two-dimensional sheets are formed in (II) separated by layers of isopropyl groups. The N⋯O distances are 2.790 (1)-2.903 (1) Å in (I) and 2.747 (1)-2.807 (1) Å in (II). Differences between the solid-state photoreactivities of the fumaric acid ions in (I) and (II) are rationalized based on the crystal structures.

Original languageEnglish
Pages (from-to)142-145
Number of pages4
JournalActa Crystallographica Section C: Crystal Structure Communications
Issue number1
Publication statusPublished - 1998 Jan 15

ASJC Scopus subject areas

  • General Biochemistry,Genetics and Molecular Biology


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