Crystal structure of 2-amino-4,6-di-meth-oxy-pyrimidinium thio-phene-2-carboxyl-ate.
In the title salt, C6H10N3O2 (+)·C5H3O2S(-), the 2-amino-4,6-di-meth-oxy-pyrimidinium cation inter-acts with the carboxyl-ate group of the thio-phene-2-carboxyl-ate anion through a pair of N-H⋯O hydrogen bonds, forming an R 2 (2)(8) ring motif. These motifs are centrosymmetrically paired via N-H⋯O hydrogen bonds, forming a complementary DDAA array. The separate DDAA arrays are linked by π-π stacking inter-actions between the pyrimidine rings, as well as by a number of weak C-H⋯O and N-H⋯O inter-actions. In the anion, the dihedral angle between the ring plane and the CO2 group is 11.60 (3)°. In the cation, the C atoms of methoxy groups deviate from the ring plane by 0.433 (10) Å.
School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India.
Ammaiyappan
A
Rajam
School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamilnadu, India.
P T
PT
Muthiah
Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA.
Ray J
RJ
Butcher
Department of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA.
Jerry P
JP
Jasinski
crystal salts; crystal structure; hydrogen-bonding patterns; π–π stacking inter­actions