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Figure 3
A perspective view of the hydrogen bonding in (I)[link]. Dashed lines indicate N—H⋯O and C—H⋯O inter­actions. Note the twist of the amide groups forming a hydrogen bond with a squarate dianion out of the plane of the donor parent mol­ecule. [Symmetry codes: (ii) x, −y + 1, z + [{1\over 2}]; (iii) −x + [{1\over 2}], −y + [{1\over 2}], −z + 2; (iv) −x + 1, −y, −z + 1; (v) x, −y, z + [{1\over 2}].]

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 61| Part 12| November 2005| Pages o678-o680
doi:10.1107/S0108270105032622
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