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Figure 4
Part of the crystal packing of (I)[link], showing the centrosymmetric tetra­molecular R44(26) (in ball-and-stick representation) and dimeric R22(8) ring motifs, forming infinite chains parallel to the c axis, for which the complete graph-set notation is C(11)[R22(8)R44(26)]. Also shown are the centrosymmetric dimeric R22(4) ring motifs formed by N—H⋯N hydrogen bonds. Hydrogen bonds are shown as dashed lines and H atoms not involved in hydrogen bonding have been omitted for clarity. Selected atoms are labelled, primarily to provide a key for the coding of the atoms. [Symmetry codes: (i) −x + 2, −y + 2, −z + 2; (ii) −x + 1, −y + 2, −z + 1; (iii) x, y, z − 1.]

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 65| Part 10| September 2009| Pages o502-o505
doi:10.1107/S0108270109033642
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