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Figure 3
Part of the crystal structure of (I[link]), showing a hydrogen-bonded helical chain of O2—H2⋯O2 bonds [symmetry codes: (i) y − [{1 \over 4}], [{3 \over 4}] − x, z − [{1 \over 4}]; (ii) [{1 \over 2}] − x, 1 − y, z − [{1 \over 2}]; (iii) [{3 \over 4}] − y, [{1 \over 4}] + x, z − [{3 \over 4}]; (iv) x, y, 1 − z]. Atom H1, C-­bound H atoms and the intramolecular O2—H2⋯Br1 hydrogen bond have been omitted for clarity, as has the unit-cell box.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 60| Part 5| April 2004| Pages o353-o355
doi:10.1107/S0108270104006882
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