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Figure 2
Views of the crystal packing of (Ia) and (Ib), showing (a) hydrogen-bonded layers in (Ia) and (b) double layers in (Ib). Dashed lines represent N—H⋯S hydrogen bonds in dimers of 1-(diamino­methyl­ene)thio­uron-1-ium and O—H⋯O bonds in dimers involving HSO4−.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 64| Part 6| May 2008| Pages o330-o334
doi:10.1107/S0108270108013504
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