title: trans-Cyclo-hex-2-ene-1,4-diyl bis-(4-nitro-phen-yl) dicarbonate.
abstract: Although the title mol-ecule, C(20)H(16)N(2)O(10), does not possess mol-ecular inversion symmetry, it lies on a crystallographic inversion centre which imposes disorder on the central cyclo-hexene ring. In addition, the cyclo-hexene ring has non-symmetry-related disorder over two sites, with the ratio of the major and minor components being 0.54:0.46. The overall effect is to produce four disorder components for the atoms of the cyclo-hexene ring. The side chain is perfectly ordered and the dihedral angle between the atoms of the carbonate group (O=CO(2)-) and the benzene ring is 72.99 (6)°.
authors.forename: Syed
authors.initials: S
authors.lastname: Nawazish Ali
authors.forename: Sabira
authors.initials: S
authors.lastname: Begum
authors.forename: Mitchell A
authors.initials: MA
authors.lastname: Winnik
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Lough