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室温下,于CH3OH和H2O的混合溶剂中,钨酸钠存在下邻苯二胺和盐酸反应合成了棕色和红色两种不同颜色的C6H4(NH2)2.2HCl晶体,X-射线单晶衍射分析,晶体属单斜晶系,空间群为C2/c,a=0.7339(2)nm,b=1.4535(5)nm,c=0.8009(3)nm,β=94.041(5)°,V=0.8522(5)nm3,z=4,R1=0.0247,WR2=0.0684。奇特的是棕色晶体与红色晶体均为邻苯二胺盐酸盐,具有相同的晶体结构和IR光谱,但UV光谱呈现出差异。
At room temperature, C6H4 (NH2) 2.2HCl crystals of two different colors of brown and red were synthesized by the reaction of ortho-phenylenediamine and hydrochloric acid in the presence of sodium tungstate in a mixed solvent of CH3OH and H2O. X-ray single crystal diffraction analysis, The crystal is monoclinic with space group C2 / c, a = 0.7339 (2) nm, b = 1.4535 (5) nm, c = 0.8009 (3) nm, β = 94.041 5) nm3, z = 4, R1 = 0.0247, WR2 = 0.0684. Curiously, both brown and red crystals are o-phenylenediamine hydrochloride, with the same crystal structure and IR spectrum, but the UV spectrum shows a difference.