title: 2-(2-Carb-oxy-eth-yl)-1,3-dioxoisoindoline-5,6-dicarb-oxy-lic acid methanol monosolvate.
abstract: In the title compound, C(13)H(9)NO(8)·CH(3)OH, the main mol-ecule possesses three carb-oxy-lic acid groups, which are asymmetrically distributed around the mol-ecule core. This results in hydrogen-bonding motifs ranging from a chain to various rings. The combination of the chain motif together with a carb-oxy-lic dimer R(2) (2)(8) ring motif creates a ribbon of mol-ecules propagating along the c-axis direction. A second ribbon results from the combination of the chain motif together with a methanol solvent mol-ecule and carboxyl-containing R(4) (4)(12) ring motif. These two ribbons combine alternately, forming a hydrogen-bonded layer of mol-ecules parallel to (2[Formula: see text]0).
authors.affiliation: Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO Wits 2050, Johannesburg,  South Africa.
authors.forename: Sanaz
authors.initials: S
authors.lastname: Khorasani
authors.forename: Manuel A
authors.initials: MA
authors.lastname: Fernandes