title: Triethylammonium hydrogen fumarate.
abstract: In crystals of the title compound, the hydrogen fumarate anions form one-dimensional chains through an O-H.O hydrogen bonding along the c and (a+b)/2 directions. There are three sites of the hydrogen fumarate, two of which have an inversion centre.
authors.affiliation: Department of Chemistry, Faculty of Science and Technology, Keio University, Hiyoshi 3-14-1, Kohoku-ku, Yokohama 223-8522, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Hosomi
authors.forename: S
authors.initials: S
authors.lastname: Ohba
authors.forename: Y
authors.initials: Y
authors.lastname: Ito