Biphenyl-3,3′,4,4′-tetra­amine

Qian, H.-F.; Huang, W.

doi:10.1107/S1600536810012511

Figure 2 . Perspective view of the hydrogen bonding interactions in the crystal packing of (I), where the hydrogen bonds are shown as dashed lines. [Symmetry codes: (i) -x, -y + 2, -z; (ii) -x, y - $[{1\over 2}]$ , -z + $[{1\over 2}]$ .]