metal-organic compounds
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In the title half-sandwich compound, [Ni(C6H15N3)(H2O)3]Br(NO3), the central NiII ion, lying on a threefold rotation axis, is six-coordinated by three amine N atoms from the face-capping triaza macrocycle and three water O atoms in a slightly distorted octahedral geometry. In the crystal, O—HO hydrogen bonding and weak O—HBr interactions associate the NiII cations and the counter-ions into a three-dimensional supramolecular network.