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Figure 2
A partial packing diagram for (I)[link], viewed along the a axis, showing the symmetry relationships between the ammonium cations surrounding the bromide anion. The N1 cation (blue in the electronic version of the paper) is related to the N1i cation (red) by a 21 screw axis parallel to a, and related to the N1ii cation (orange) by a 32 screw axis parallel to c. The N1ii and N1i cations are related by a twofold rotation parallel to b. [Symmetry codes: (i) x − y + 1, −y + 1, −z + [{4 \over 3}]; (ii) −x + y + 1, −x + 1, z + [{1\over 3}].]

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 68| Part 4| March 2012| Pages o152-o155
doi:10.1107/S0108270112009377
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