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 3
The C-2-type bonded chain of (I)

. 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 a twofold screw symmetry and contains just one type of $[R_{2}^{2}]$ (8) ring. [Symmetry codes: (i) −x + $[{1\over 2}]$ , y + $[{1\over 2}]$ , −z + $[{3\over 2}]$ ; (ii) −x + $[{1\over 2}]$ , y − $[{1\over 2}]$ , −z + $[{3\over 2}]$ .]

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

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

https://doi.org/10.1107/S205698901701653X

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