title: 2-{3-Cyano-5,5-dimethyl-4-[4-(piperidin-1-yl)buta-1,3-dien-yl]-2,5-dihydro-furan-2-yl-idene}malononitrile.
abstract: The title compound, C(19)H(20)N(4)O, crystallizes as twinned crystals containing two independent mol-ecules which pack into a three-dimensional matrix via several C-H⋯N(cyano) inter-actions, with a C⋯N range of 3.324 (8)-3.568 (8) Å and C-H⋯N angles in the range 147-166°.
authors.forename: Graeme J
authors.initials: GJ
authors.lastname: Gainsford
authors.forename: M Delower H
authors.initials: MD
authors.lastname: Bhuiyan
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Kay
authors.forename: Anthony L
authors.initials: AL
authors.lastname: Spek