Hydrogen Bonded 3D Supramolecular Architectures of Two Organic Salts Assembled from 2-Aminoheterocyclic Compounds and Phosphoric Acid

作者：Jin Shouwen^*; Wang Daqi

来源：Journal of Chemical Crystallography, 2012, 42(3): 276-282.

DOI：10.1007/s10870-011-0240-2

• Synthesis
• Structure characterization
• Hydrogen bonding
• 2-Aminoheterocyclic compounds
• Phosphoric acid

Two phosphate salts (2-aminopyrimidine): (phosphoric acid): H2O [HL1(+) (H2PO4)(-)]center dot H2O (1), and (4-phenylthiazol-2-amine): (phosphoric acid) [HL2(+)center dot(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) angstrom, b = 8.6139(9) angstrom, c = 9.4800(10) angstrom, alpha = 109.685(2)degrees, beta = 106.3340(10)degrees, gamma = 95.4450(10)degrees, V = 448.72(8) angstrom(3), Z = 2. For 1, the cations were linked to each other via intermolecular C-H center dot center dot 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 center dot center dot center dot 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 center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds to form a 2D corrugated sheet. Adjacent sheets were combined together through pi-pi interaction to form double sheet. These double sheets were further joined together by O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds to produce a 3D network structure. Compound 2 crystallizes in the Orthorhombic, space group Pbca, with a = 10.1929(10) angstrom, b = 8.4406(9) angstrom, c = 27.589(2) angstrom, alpha = 90 degrees, beta = 90 degrees, gamma = 90 degrees, V = 2373.6(4) A(3), Z = 8. In 2, the phosphates formed 1D chain along the b-axis through two P-O-H center dot center dot center dot O = P hydrogen bonds. The cations formed 1D zigzag chain along the b-axis direction under the CH-pi interaction. The anionic chains were intercalated between two adjacent cationic chains through N-H center dot center dot center dot O, O-H center dot center dot center dot O, C-H center dot center dot center dot O, and O-S contacts. Such stacking repeated along the c-axis direction to form a 3D network structure.

• 出版日期2012-3
• 单位聊城大学