title: N-(2-Formamido-eth-yl)formamide.
abstract: The complete molecule of the title compound, C(4)H(8)N(2)O(2), is generated by a crystallographic inversion center. The occurence of N-H⋯O hydrogen bonds results in the formation of a two-dimensional infinite network parallel to the (010) plane. In this plane, the hydrogen bonds define graph-set motif R(4) (4)(22) in a centrosymmetric array by the association of four mol-ecules.
authors.forename: Jin-Hui
authors.initials: JH
authors.lastname: Yang
authors.forename: Yan-Xue
authors.initials: YX
authors.lastname: Chen
authors.forename: Shao-Hui
authors.initials: SH
authors.lastname: Wang
authors.forename: Jian-Lei
authors.initials: JL
authors.lastname: Wang