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

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 17
(a) A view along the a axis of the potassium–organic framework of UBUPAK (Masci et al., 2010

) and (b) a view along the c axis of the potassium–organic framework of MUMPIW (Li et al., 2020

CRYSTALLOGRAPHIC
COMMUNICATIONS

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