Abstract
The silver and acid hydrogen atoms in the crystal structure of [Ag(pa)(Hpa)] n (Hpa = 3-(1H-benzimidazol-2-yl) propionic acid-N) both lie on special positions of −1 site symmetry; the silver atom shows linear coordination [Ag–N = 2.109(3) Å, N–Ag–N = 180°]. The ‘acid hydrogen’ links molecules into a linear chain, and hydrogen bonds between the nitrogen-bound hydrogen atom and the carbonyl oxygen atom of an adjacent chain furnish a three-dimensional supramolecular structure. The compound, C20H19AgN4O4, belongs to the triclinic space group P 1 [a = 6.536(7), b = 8.127(9), c = 9.051(1) Å; α = 81.692(2), β = 82.819(2), γ = 87.229(2)°], and there is one formula unit in the unit cell.
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