Hydrogen-bond interactions in morpholinium bromide

In the title compound, C4H10NO+center dot Br-, which was synthesized by dehydration of diethanolamine with HBr, morpholinium and bromide ions are linked into chains by N-H center dot center dot center dot Br hydrogen bonds describing a C-2(1)(4) graph-set motif. Weaker bifurcated N-H center dot center dot center dot Br interactions join centrosymmetrically related chains through alternating binary graph-set R-4(2)(8) and R-2(2)(4) motifs, to form ladders along [100]. In addition, C-H center dot center dot center dot O interactions between centrosymmetric morpholinium cations link ladders, via R-2(2)(8) motifs, to yield sheets parallel to (101), which in turn are crosslinked by weak C-H center dot center dot center dot O interactions, related across a glide plane, to form a three-dimensional network.