Hydrogen Bonded 3D Supramolecular Architectures of Two Organic Salts Assembled from 2-Aminoheterocyclic Compounds and Phosphoric Acid |
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Authors: | Shouwen Jin Daqi Wang |
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Institution: | (1) Tianmu College of ZheJiang A & F University, Lin’An, 311300, People’s Republic of China;(2) Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, People’s Republic of China |
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Abstract: | Abstract Two phosphate salts (2-aminopyrimidine): (phosphoric acid): H2O HL1+ (H2PO4)
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]·H2O (1), and (4-phenylthiazol-2-amine): (phosphoric acid) HL2+·(H2PO4)−] (2) based on 2-aminoheterocyclic compounds, 2-aminopyrimidine (L1), and 4-phenylthiazol-2-amine (L2) were prepared and structurally
characterized by X-ray crystallography. Compound 1 crystallizes in the triclinic, space group P-1, with a = 6.2201(7) Å, b = 8.6139(9) Å, c = 9.4800(10) Å, α = 109.685(2)°, β = 106.3340(10)°, γ = 95.4450(10)°, V = 448.72(8) Å3, Z = 2. For 1, the cations were linked to each other via intermolecular C–H···N hydrogen bonds to form a 1-D chain structure running along
the a-axis direction. The anions and the water molecules were connected alternatively along the a-axis direction through O–H···O
hydrogen bonds to form a 1-D chain also. The cationic chains and the anionic chains were alternatively connected along the
c-axis direction through N–H···O and C–H···O hydrogen bonds to form a 2D corrugated sheet. Adjacent sheets were combined together
through π–π interaction to form double sheet. These double sheets were further joined together by O–H···O and N–H···O hydrogen
bonds to produce a 3D network structure. Compound 2 crystallizes in the Orthorhombic, space group Pbca, with a = 10.1929(10) Å, b = 8.4406(9) Å, c = 27.589(2) Å, α = 90°, β = 90°, γ = 90°, V = 2373.6(4) Å3, Z = 8. In 2, the phosphates formed 1D chain along the b-axis through two P–O–H···O = P hydrogen bonds. The cations formed 1D zigzag chain
along the b-axis direction under the CH–π interaction. The anionic chains were intercalated between two adjacent cationic
chains through N–H···O, O–H···O, C–H···O, and O–S contacts. Such stacking repeated along the c-axis direction to form a 3D
network structure. |
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