Inter-ring and endo anomeric effects, and hydrogen-bonded supra­molecular motifs in two 2,4,6,8-tetra­aza­bicyclo­[3.3.0]octane derivatives

Zhang, Z.; Wang, J.; Zhang, G.; Li, J.

doi:10.1107/S0108270109003242

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 4
Part of the crystal structure of (II)

, showing the formation of a hydrogen-bonded chain along the [110] direction which is symmetry related to [1 $[\overline 1]$ 0]. For the sake of clarity, H atoms not involved in the motif shown have been omitted. Intermolecular interactions are represented by dashed lines and selected atoms are labelled. [Symmetry codes: (i) −x + 1, y, −z + $[{1\over 2}]$ ; (v) x + $[{1\over 2}]$ , y + $[{1\over 2}]$ , z; (vi) −x + $[{1\over 2}]$ , y − $[{1\over 2}]$ , −z + $[{1\over 2}]$ .]

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 65| Part 4| March 2009| Pages o146-o150

doi:10.1107/S0108270109003242

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