title: 2,2'-Bipyridine-5,5'-dicarboxylic acid.
abstract: The title mol-ecule, C(12)H(8)N(2)O(4), lies on an inversion center. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds connect mol-ecules into one-dimensional chains along [11].
authors.affiliation: School of Environmental and Energy Engineering, Beijing University of Civil Engineering and Architecture, 100044 Beijing, People's Republic of China.
authors.forename: Chongchen
authors.initials: C
authors.lastname: Wang