Sadasivam Sharmila Tagore

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In the crystal structure of the title zwitterion, C5H11N5S, mol-ecules are linked via N-H⋯N hydrogen bonds, forming zigzag chains propagating along [010]. The chains are linked by C-H⋯S hydrogen bonds, forming two dimensional networks lying parallel to (001).
In the title salt, C4H7N4O(+)·C7H7O3S(-), the 2,6-di-amino-4-oxo-1,3-di-hydro-pyrimidin-1-ium cation inter-acts with the sulfonate group of the p-toluene-sulfonate anion via a pair of N-H⋯O hydrogen bonds, forming a hetero-synthon R 2 (2)(8) that mimics the role of a carboxyl-ate. The self-assembled cations form a homo-synthon R 2 (1)(6) motif which is(More)
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