4,7-Diaza-1-azoniacyclo­nonane bromide

The title compound, C6H16N3 +·Br−, is the bromide of the monoprotonated aza­macrocyclic triamine 1,4,7-triaza­cyclo­nonane (tacn). The threefold axis of the triamine is broken by the protonation of one of the three amine functions. The ammonium proton is bonded in an intra­molecular symmetrically bifurcated hydrogen bond to the two endodentate amine functions. Direct cation–anion contacts are established via N—H⋯Br hydrogen bonds between the bromide anions and tacnH+ cations

(1S*,2S*)-1,2-Di-tert-butyl­glycol

In the crystal structure of the title compound, C10H22O2, co-operative chains of O—H⋯O hydrogen bonds are established by intra- as well as inter­molecular inter­actions. These hydrogen bonds connect the mol­ecules into infinite strands along [100], with a binary level graph-set descriptor C 2 2(4). Excluding the H atoms on the hydr­oxy groups, the mol­ecule shows non-crystallographic C 2 symmetry