| pubmed-article:15640590 | pubmed:abstractText | In the 1:1 supramolecular adduct of azopyridine (AZP) and succinic acid (SA) [systematic name: di-4-pyridyldiazene-succinic acid (1/1)], C10H8N4.C4H6O4 or AZP.SA, both components lie on inversion centers. Alternating AZP and SA molecules are linked by O-H...N hydrogen bonds to form a linear chain extending in the [31-1] direction. Between chains there is a strong pyridyl-azo pi-pi interaction, with a 3.340 A separation between the inversion center at the mid-point of the azo bond and the centroid of the pyridine ring; this interaction results in the formation of sheets. | lld:pubmed |
