Acta Cryst. (2009). E65, m370-m371 [ doi:10.1107/S1600536809007478 ]
Online 6 March 2009
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2-1,1'-(butane-1,4-diyl)diimidazole-![[kappa]](/logos/entities/kappa_rmgif.gif)
2N3:N3']] dichloride tetrahydrate]