Two-dimensional hydrogen-bonded supra­molecular networks in the compounds of benzene-1,2,4,5-tetra­carb­oxy­lic acid (pyromellitic acid) with 2,2′-bi­imidazole and 4,4′-di­methyl-2,2′-bi­pyridine

Zhong, K.-L.

doi:10.1107/S0108270113030801

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 4
The two-dimensional hydrogen-bonded anionic layer in (II)

, extending parallel to the (10 $[\overline{2}]$ ) crystallographic plane, showing the formation of R₂²(8), R₄⁴(30), R₄⁴(20) and R₆⁶(26) motifs. Hydrogen bonds are represented by dashed lines. [Symmetry codes: (i) −x, −y + 1, −z + 1; (iv) −x + 1, −y + 1, −z; (v) −x + 2, −y + 1, −z; (vi) x + 1, y, z; (vii) −x, −y + 2, −z + 1; (viii) x, y + 1, z; (ix) −x + 1, −y + 2, −z + 1; (x) −x + 1, −y + 1, −z + 1.]

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 69| Part 12| November 2013| Pages 1537-1540

doi:10.1107/S0108270113030801

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