investigated. The structures of two dyes (5a and 5b) were characterized and analyzed by X-ray diffraction as well. Crystallographic data revealed that dye 5a belonged to tetragonal, I4 (1)/a space group, while dye 5b belonged to monoclinic, P-1 space group. In the case of both dyes, intermolecular associations occurred by π–π stacking and intermolecular hydrogen bonds, which contributed to stabilize the
通过常规溶剂法和微波法,以
罗丹宁,2-甲
硫基季盐和1 H-
吲哚-3-
甲醛为起始原料,合成了六种若丹蓝花菁
染料。使用UV-Vis,IR,MS,1 H NMR和元素分析鉴定产物。研究了
染料在
氯仿,
DMSO,
水,
丙酮,
乙醇和
甲醇中的UV-Vis吸收光谱。两种
染料(5a和5b)的结构也通过X射线衍射进行了表征和分析。晶体学数据表明,
染料5a属于四角形I 4(1)/ a空间群,而
染料5b属于单斜晶P-1个空间组。在两种
染料的情况下,分子间缔合都是通过π-π堆积和分子间氢键发生的,这有助于稳定晶体结构。