4,6-Dimethoxypyrimidin-2-amine–2-(1 H -indol-3-yl)acetic acid (1/1)

Self Cite

In the crystal of the title compound, C6H9N3·C6H8O2, the 2-amino-4,6-dimethylpyrimidine and sorbic acid molecules are linked through N—H⋯O and O—H⋯N hydrogen bonds, which generate a cyclic bimolecular heterosynthon with an R 2 2(8) graph-set motif. Further, two inversion-related pyrimidine molecules are base-paired via a pair of N—H⋯N hydrogen bonds, forming a cyclic bimolecular homosynthon with a graph-set of R 2 2(8). A discrete hetero tetrameric supramolecular unit along the b axis is formed by the fusion of two heterosynthons and one homosynthon. An aromatic π–π interaction [centroid–centroid distance = 3.7945 (16) Å] is observed between these tetrameric units.

Section: Sup-1mentioning

confidence: 99%

“…For aminopyrimidine-carboxylic acid interactions, see: Hunt et al (1980). For related structures, see: Thanigaimani et al (2007); Ebenezer & Muthiah (2010, 2012. For hydrogen-bond motifs, see: Bernstein et al (1995); Etter (1990).…”

Section: Related Literaturementioning

confidence: 99%

2-Amino-4,6-dimethylpyrimidine–sorbic acid (1/1)

Gomathi¹,

Muthiah²

2013

Self Cite

“…For hydrogen-bond motifs, see: Bernstein et al (1995); Etter (1990). For related structures, see: Low et al (2002); Arora & Sundaralingam (1971); Balasubramani et al (2007); Hemamalini et al (2005); Thanigaimani et al (2007Thanigaimani et al ( , 2008; Ebenezer & Muthiah (2010).…”

Section: Related Literaturementioning

confidence: 99%

“…The crystal structures of 2-amino-4, 6-dimethoxy pyrimidine (Low et al, 2002) and p-toluene sulfonic acid monohydrate (Arora & Sundaralingam, 1971) have already been reported. Investigations of a fairly large number of crystal structure of 2-amino-4,6-dimethoxy/dimethyl pyrimidine salts and co crystals involving carboxylates (Thanigaimani et al, 2007;Thanigaimani et al, 2008;Ebenezer & Muthiah, 2010) and a few sulfonates (Balasubramani et al, 2007;Hemamalini et al, 2005) have already been reported from our laboratory. They reveal the formation of certain robust motifs and a variety of supramolecular architectures.…”

Section: S1 Commentmentioning

confidence: 99%

2-Amino-4,6-dimethoxypyrimidin-1-iump-toluenesulfonate

Gomathi

Muthiah

2011

Self Cite

In the title salt, C 6 H 10 N 3 O 2 + ·C 7 H 7 O 3 S − , the 2-amino-4,6-dimethoxypyrimidinium cation interacts with the sulfonate group of the p -toluenesulfonate anion via a pair of N—H⋯O hydrogen bonds, forming a cyclic hydrogen-bonded R 2 2 (8) motif, which in the crystal is linked by further intemolecular N—H⋯O hydrogen bonds, forming supramolecular chains along the c axis. Furthermore, neighboring chains are interlinked via weak C—H⋯O hydrogen bonds and C—H⋯π interactions, forming layers.

“…For background to crystal engineering, see: Desiraju (1989); Schultheiss et al (2010); Ebenezer & Muthiah (2010); An et al (2010). For a related flexible tetracarboxylic acid, see Holmes et al (1987); Wang et al (2009).…”

Section: Related Literaturementioning

confidence: 99%

4,4′-Bipyridine–cyclohexane-1,2,4,5-tetracarboxylic acid (1/1)

Liu

2010

In the title 1:1 adduct, C10H8N2·C10H12O8, the dihedral angle between the pyridine rings in the 4,4-bipyridine molecule is 8.33 (13)°. In the crystal, the cyclohexane-1,2,4,5-tetracarboxylic acid molecules interact with each other through intermolecular O—H⋯O hydrogen bonds, forming an infinite chain along the a axis, which is further linked perpendicularly by O—H⋯N hydrogen bonds involving bipyridine, resulting in a supramolecular corrugated sheet parallel to the (110) plane.