Crystal and molecular structure of two new Schiff bases: paeonol — ethylenediamine and paeonol — 1,3-propylenediamine
T.-T. Xu1, X.-Y. Xu2, J. Gao3, Sh.-Sh. Ni2, D.-Q. Wang4, L.-D. Lu1, X.-J. Yang1, X. Wang1
1Nanjing University of Science and Technology, Nanjing 210094, P.R. China
2Huaihai Institute of Technology, Lianyungang 222005, P.R. China
3Lianyungang Technical College, Lianyungang 222006, P.R. China
4College of Chemistry and Chemical Engineering, Liaocheng University, Shandong 252059, P.R. China
Ключевые слова: Molecular crystals, crystal structure, amine, 2-hydroxy-4-methoxyacetophenone
Страницы: 189-193
Подраздел: КРАТКИЕ СООБЩЕНИЯ
Аннотация
Two new Schiff bases were prepared by the condensation reaction of paeonol with ethylenediamine (for compound 1) and 1,3-propylenediamine (for compound 2). The compounds were studied with single crystal X-ray diffraction method. Compound 1 is monoclinic, space group P21/c, a = 10.956(15), b = 6.767(10), c = 12.494(18) Å; b = 104.66(2)°, V = 896(2) Å 3, Z = 2. Compound 2 is triclinic, space group P-1, a = 6.878(2), b = 12.141(4), c = 12.414(4) Å ;a = 101.023(6)°, b = 103.415(6)°, γ = 102.337(6)°, V = 952.8(6) Å 3, Z = 2. The molecular structures of 1 and 2 are similar; the molecule being centrosymmetric in 1 but asymmetric in 2.
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