Neutron diffraction studies of the 1:1 and 2:1 cocrystals of benzene-1,2,4,5-tetra­carboxylic acid and 4,4′-bipyridine

Cowan, J.A.; Howard, J.A.K.; Mason, S.A.; McIntyre, G.J.; Lo, S.M.-F.; Mak, T.; Chui, S.S.-Y.; Cai, J.; Cha, J.A.; Williams, I.D.

doi:10.1107/S0108270106004008

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 2
A plot of (I)

from the 215 K neutron data. Displacement ellipsoids are drawn at the 50% probability level. The heavy dashed lines indicate strong hydrogen bonds and the thin dashed line indicates a weak C—H⋯O hydrogen bond. [Symmetry codes: (i) 1 − x, 1 − y, −z; (ii) −x − 1, −y, 1 − z.]

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 62| Part 4| March 2006| Pages o157-o161

doi:10.1107/S0108270106004008

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