title: Bis(2-hy-droxy-ethanaminium) biphenyl-4,4'-dicarboxyl-ate.
abstract: In the title compound, 2C(2)H(8)NO(+)·C(14)H(8)O(4) (2-), the dihedral angle between the benzene rings of the dianion is 9.95 (12)°. In the crystal, the cations and anions are linked via inter-molecular O-H⋯O and N-H⋯O hydrogen bonds, generating layers lying parallel to (001).
authors.forename: Bin
authors.initials: B
authors.lastname: Deng
authors.forename: Rui-Jin
authors.initials: RJ
authors.lastname: Yu