Received 19 December 2009
aUniversity of Illinois, School of Chemical Sciences, Box 77-5, 600 South Mathews Avenue, Urbana, Illinois 61801, USA,bUniversity of Illinois, School of Chemical Sciences, Box 59-1, 505 South Mathews Avenue, Urbana, Illinois 61801, USA, and cUniversity of Illinois, School of Chemical Sciences, Box 55-5, 600 South Mathews Avenue, Urbana, Illinois 61801, USA
Correspondence e-mail: firstname.lastname@example.org
The title compound, C7H14BrN2+·Br-, was prepared by nucleophilic substitution of DABCO (systematic name: 1,4-diazabicyclo[2.2.2]octane) with dibromomethane in acetone. The structure features BrH close contacts (2.79 and 2.90 Å) as well as a weak bromine-bromide interaction [3.6625 (6) Å].
For use of DABCO as an organocatalyst, see Basaviah et al. (2003). For related haloalkylations of DABCO, see: Almarzoqi et al. (1986); Fronczek et al. (1990); Gustafsson et al. (2005); Banks et al. (1993); Batsanov et al. (2005); Fletcher Claville et al. (2007). For inversion twinning, see: Flack & Bernardinelli (2000).
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT and XPREP (Bruker, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and CrystalMaker (CrystalMaker, 1994); software used to prepare material for publication: XCIF (Bruker, 2005).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PK2223 ).
This work was supported by the National Science Foundation under NSF Award Nos. CBET-0730667 and CHE-0642413. The Materials Chemistry Laboratory at the University of Illinois was supported in part by grants NSF CHE 95-03145 and NSF CHE 03-43032 from the National Science Foundation.
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