作者: Shouwen Jin , Daqi Wang
DOI: 10.1007/S10870-011-0050-6
关键词:
摘要: Three saccharinate salts (2-aminopyrimidine): (saccharin) (1), (4-phenylthiazol-2-amine): (2), and (2-methylquinoline): (3) were prepared structurally characterized by X-ray crystallography. Salt 1 crystallizes in the monoclinic, space group P2(1)/c, with a = 7.1782(9) A, b = 13.5105(16) c = 12.2251(12) β = 93.3410(10)°, V = 1183.6(2) A3, Z = 4. Compound 2 triclinic, P-1, a = 7.4584(7) b = 8.6930(9) c = 12.9179(14) α = 108.952(2)°, β = 91.7510(10)°, γ = 97.2280(10)°, V = 783.57(14) Z = 2. 3 a = 7.781(8) b = 19.4209(19) c = 10.9719(12) β = 107.7390(10)°, V = 1579.2(16) The different hydrogen bonding interaction modes of anions cations lead to 3D network structure, staircase ABAB layer structure for 1, 2, respectively. Despite variations cation shape on aromatic N–heterocyclic compounds, there all existed strong intermolecular N–H⋯O(carbonyl) bonds. In compounds N+–H⋯O between N+–H C=O anion is most important this family salts. However, was a N–H⋯O amino proton anion. At next level, C–H interacts sulfonyl O atom. There are also π–π interactions 1–2, CH3–π 3. Under these three exhibit synthons I–III These responsible high-yielding supramolecular assembly N-containing bases into Due collective weak interactions, complexes displayed structure.