Buthalital and methitural – 5,5-substituted derivatives of 2-thio­barbituric acid forming the same type of hydrogen-bonded chain

Gelbrich, T.; Griesser, U.J.

doi:10.1107/S205698901701653X

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 4
The C-2-type bonded chain of (II)

. O and H atoms directly involved in N—H⋯O interactions are drawn as balls and H atoms bonded to C atoms are omitted for clarity. The chain displays two types of $[R_{2}^{2}]$ (8) ring, which contain an inversion centre (N1—H1⋯O6ⁱ) or a twofold axis (N3—H3⋯O4ⁱⁱ). [Symmetry codes: (i) −x, −y + 1, −z + 1; (ii) −x, y, −z + $[{1\over 2}]$ .]

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 73| Part 12| December 2017| Pages 1908-1912

https://doi.org/10.1107/S205698901701653X

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