title: 4,10-Diformyl-2,6,8,12-tetra-nitro-2,4,6,8,10,12-hexa-azatetra-cyclo-[5.5.0.0.0]dodeca-ne.
abstract: The title compound TNDFIW, C(8)H(8)N(10)O(10), is a caged heterocycle substituted with four nitro and two formyl groups. It is related to the hexa-azaisowurtzitane family of high-density high-energy polycyclic cage compounds. Four nitro groups are appended to the four N atoms of the two five-membered rings, while the other two formyl groups are attached to the two N atoms of the six-membered ring, which adopts a boat conformation. The compound has a cage structure which is constructed from one six-membered and two five-membered rings which are closed by a C-C bond, thus creating two seven-membered rings. There are a number of close intermolecular contacts [O⋯O = 2.827 (5), 2.853 (4) and 2.891 (5) Å; O⋯N = 2.746 (2) and 2.895 (2) Å] The calculated density of TNDFIW is 1.891 Mg m(-3).
authors.affiliation: School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
authors.forename: Huaxiong
authors.initials: H
authors.lastname: Chen
authors.forename: Rui
authors.initials: R
authors.lastname: Shi
authors.forename: Shusen
authors.initials: S
authors.lastname: Chen
authors.forename: Shaohua
authors.initials: S
authors.lastname: Jin
authors.forename: Lijie
authors.initials: L
authors.lastname: Li
authors.forename: Yanshan
authors.initials: Y
authors.lastname: Shi