Nonmerohedrally twinned 6-amino-3-methyluracil-5-carbaldehyde: a hydrogen-bonded ribbon containing four types of ring

被引：2

作者：

de la Torre, Jose M. ^{[2
]}

Trilleras, Jorge ^{[3
]}

Cobo, Justo ^{[2
]}

Glidewell, Christopher ^{[1
]}

机构：

[1] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland

[2] Univ Jaen, Dept Quim Inorgan & Organ, Jaen 23071, Spain

[3] Univ Valle, Grp Invest Compuestos Heterocicl, Dept Quim, Cali 25360, Colombia

来源：

ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY | 2009年 / 65卷

关键词：

SUPRAMOLECULAR STRUCTURES; 6-AMINO-5-FORMYL-1,3-DIMETHYLURACIL MONOHYDRATE; INTERPLAY; SHEETS;

D O I：

10.1107/S0108270109013493

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the title compound [systematic name: 6-amino-5-formyl-3-methylpyrimidine- 2,4(1H, 3H)-dione], C6H7N3O3, the intramolecular dimensions provide evidence for some polarization of the electronic structure. There is an intramolecular N-H center dot center dot center dot O hydrogen bond; this and a combination of three intermolecular N-H center dot center dot center dot O hydrogen bonds generate an almost planar ribbon containing S(6), R-2(2)(4), R-2(1)(6) and R-4(4)(16) rings. These ribbons are linked into sheets by a dipolar carbonyl carbonyl interaction. The structure was refined as a nonmerohedral twin, with twin fractions 0.7924(1) and 0.2076 (10).

引用

页码：O281 / O283

页数：3

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