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Figure 5
The packing of (I)[link] along the a axis, showing the regular layers of hydrogen tartrate and piperazinediium ions inter­connected in the equatorial position by hydrogen bonds.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 66| Part 1| December 2010| Pages o20-o24
doi:10.1107/S0108270109046460
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