title: Benzoic acid-3,4-bis-[(pyridin-3-ylmeth-yl)amino]-cyclo-but-3-ene-1,2-dione (1/2).
abstract: In the title co-crystal, C(16)H(14)N(4)O(2)·2C(7)H(6)O(2), the 3,4-bis-[(pyridin-3-ylmeth-yl)amino]-cyclo-but-3-ene-1,2-dione squareamide mol-ecules assemble into chains along the b axis via N-H⋯O hydrogen bonds. The benzoic acid mol-ecules then hydrogen bond to the pyridine rings via O-H⋯N hydrogen bonds, supported by weaker C-H⋯O hydrogen bonds, forming extended ribbons. The asymmetric unit consists of a half squareamide mol-ecule, sitting on a special position around a twofold axis, and one benzoic acid mol-ecule on a general position.
authors.forename: Andreas
authors.initials: A
authors.lastname: Lemmerer
authors.forename: Susan A
authors.initials: SA
authors.lastname: Bourne