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以磺胺嘧啶钠的甲醇溶液与水合氯化稀土的甲醇溶液反应制得了十五种稀土磺胺类络合物。研究了它们的溶解性、稳定性、红外光谱、x衍射数据、热分析结果、核磁共振谱、电导行为等。确定了络合物的组成为:La(SD)_3·3CH_3OH(SD=磺胺嘧啶根);Ln(SD)_3·2CH_3OH·H_2O(Ln=Eu、Yb、Lu);Ln(SD)_3·CH_3OH·2H_2O(Ln=Ce、Pr、Nd、Sm、Dy、Ho)和Ln(SD)_3·3H_2O(Ln=Gd,Tb、Er、Tm、Y)指出了在磺胺嘧啶稀土络合物的结构中,La～Ho和Y的离子通过异构化的磺胺嘧啶离子上的杂环氮和磺酰胺上的氧成键生成螯环,而Er～Lu仅与磺胺嘧啶离子上的磺酰胺的氮成键。
Fifteen rare-earth sulfonamides complexes were obtained by the reaction of sodium sulfadiazine in methanol and the solution of rare earth chloride hydrate in methanol. Their solubility, stability, infrared spectra, x-ray diffraction data, thermal analysis results, nuclear magnetic resonance spectra, conductance and so on were studied. The composition of the complex was determined as follows: La (SD) _3 · 3CH_3OH (SD = sulfadiazine); Ln (SD) _3 · 2CH_3OH · H_2O (Ln = Eu, Yb, Lu); Ln (SD) _3 · CH_3OH · 2H 2 O (Ln = Ce, Pr, Nd, Sm, Dy, Ho) and Ln (SD) _3 · 3H_2O (Ln = Gd, Tb, Er, Tm, Y) indicate that in the structure of the sulfadiazine rare earth complex , The ions of La ~ Ho and Y form chelating rings through the heterocyclic nitrogen on the isomerized sulfadiazine ion and the oxygen bond on the sulfonamide, whereas Er ~ Lu bonds only to the nitrogen of the sulfonamide on the sulfadiazine ion .