title: N,N,N',N'-Tetra-kis(2-hy-droxy-5-methyl-benz-yl)ethane-1,2-diamine dimethyl-formamide disolvate.
abstract: The title compound, C(34)H(40)N(2)O(4)·2C(3)H(7)NO, was synthesized by the Mannich condensation of ethane-diamine, formaldehyde and p-cresol. In the crystal, the tetra-phenol mol-ecule is arranged around an inversion center. The mol-ecule and the dimethyl-formamide solvate are linked through an O-H⋯O hydrogen bond. An intra-molecular O-H⋯N hydrogen bond occurs in the tetra-phenol mol-ecule, which may influence the mol-ecular confomation. Futhermore, C-H⋯O and π-π stacking inter-actions [centroid-centroid distance = 3.7081 (14) Å] stabilize the crystal packing, building a three-dimensional network.
authors.forename: Nuan-Sheng
authors.initials: NS
authors.lastname: Wang
authors.forename: Yong-Tao
authors.initials: YT
authors.lastname: Wang
authors.forename: Xiu-Kai
authors.initials: XK
authors.lastname: Guo
authors.forename: Tian-Duo
authors.initials: TD
authors.lastname: Li