title: Ribbons of hydrogen-bonded rings in the 1:2 complex of pyromellitic acid and dimethyl sulfoxide.
abstract: In the title complex, pyromellitic acid-dimethyl sulfoxide (1/2), C(10)H(6)O(8).2C(2)H(6)OS, molecules of pyromellitic acid (1,2,4,5-benzenetetracarboxylic acid) and dimethyl sulfoxide, the latter being well ordered, are linked to each other by O-H.O hydrogen bonds. The formula unit displays crystallographic inversion symmetry. The packing consists of ribbons of hydrogen-bonded rings that can be described by graph set C(2)(1)(10)R(4)(2)(18).
authors.affiliation: College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China. zimichem@sina.com
authors.forename: Zhi Min
authors.initials: ZM
authors.lastname: Jin
authors.forename: Yuan Jian
authors.initials: YJ
authors.lastname: Pan
authors.forename: Liang
authors.initials: L
authors.lastname: Shen
authors.forename: Mei Chao
authors.initials: MC
authors.lastname: Li
authors.forename: Mao Lin
authors.initials: ML
authors.lastname: Hu