title: A monoclinic polymorph of 1,3-bis-(2-pyridylamino-meth-yl)benzene.
abstract: The mol-ecules of the title compound, C(18)H(18)N(4), are linked by two different N-H⋯N(pyrid-yl) hydrogen bonds into a linear chain.
authors.forename: Li-Na
authors.initials: LN
authors.lastname: Zhu
authors.forename: Shan
authors.initials: S
authors.lastname: Gao
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng