A new tetra­kis-substituted pyrazine carb­oxy­lic acid, 3,3′,3′′,3′′′-{[pyrazine-2,3,5,6-tetra­yltetra­kis(methyl­ene)]tetra­kis­(sulfanedi­yl)}tetra­propionic acid: crystal structures of two triclinic polymorphs and of two potassium–organic frameworks

Pacifico, J.; Stoeckli-Evans, H.

doi:10.1107/S2056989021003479

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 4
(a) The molecular structure of H₄L1_B, with atom labelling. Displacement ellipsoids are drawn at the 30% probability level. (b) A view of the molecular structure of H₄L1_B with the symmetry-related disordered side chains (C8/C8B, C9/C9B, C10/C10B, O3/O3B and O4/O4B) shown with dashed bonds. Unlabelled atoms are related to labelled atoms by symmetry operator −x + 2, −y + 1, −z + 1.

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 77| Part 5| May 2021| Pages 480-490

https://doi.org/10.1107/S2056989021003479

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