Hydro­gen bonding in 2-(hydroxy­methyl)-1,3-propane­diol and N,N′-bis­[2-hydroxy-1,1-bis­(hydroxy­methyl)­ethyl]­malon­amide

Fernandes, C.; Wardell, J.L.; Skakle, J.M.S.

doi:10.1107/S0108270102011800

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 5
Part of the crystal structure of (VII

), showing the sheets formed from two hydrogen bonds [O2—H2⋯O4^iv and O4—H4⋯O2ⁱⁱⁱ; symmetry codes: (iii) −½ + x, ½ + y, z; (iv) ½ − x, ½ − y, 1 − z], resulting in an R⁴₄(8) ring, viz. O4—H4⋯O2ⁱⁱ—H2ⁱⁱ⋯O4^vi—H4^vi⋯O2ⁱⁱⁱ—H2ⁱⁱⁱ⋯O4 [symmetry codes: (ii) x, y + 1, z; (vi) −½ − x, ½ + y, ½ − z].

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 58| Part 8| July 2002| Pages o499-o502

doi:10.1107/S0108270102011800

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