title: Diiminoisoindoline: tautomerism, conformations, and polymorphism.
abstract: Two polymorphs of the industrially important compound diiminoisoindoline occur in the amino tautomeric form as a conformational isomorph with a 1 : 1 mixture of the syn- and anti-isomers, and a conformational polymorph containing only the syn-isomer.
authors.affiliation: Center for Advanced Materials, Department of Chemistry, University of Massachusetts Lowell, Lowell, Massachusetts 01854-5046, USA.
authors.forename: Zhi-Qin
authors.initials: ZQ
authors.lastname: Zhang
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Njus
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Sandman
authors.forename: Chengyun
authors.initials: C
authors.lastname: Guo
authors.forename: Bruce M
authors.initials: BM
authors.lastname: Foxman
authors.forename: Peter
authors.initials: P
authors.lastname: Erk
authors.forename: Richard
authors.initials: R
authors.lastname: van Gelder