作者:Bipul Sarma、Ranjit Thakuria、Naba K. Nath、Ashwini Nangia
DOI:10.1039/c0ce00746c
日期:——
A few molecular salts of the anti-depressant drug R/S-Mirtazapine with organic carboxylic acids, its HCl salt, and Mirtazapine hemihydrate were crystallized and characterized by X-ray diffraction, IR and Raman spectroscopy, and thermal analysis. Whereas Mirtazapine base sublimed above ambient conditions its molecular salts do not show any sublimation even at elevated temperatures. Crystal structure analysis showed that proton transfer in the hemiadipate salt occurs contrary to the ΔpKa rule. A strong ionic two-point synthon of N+–H⋯O− and C–H⋯O−hydrogen bonds is a recurring motif in Mirtazapinium carboxylate crystal structures.
抗抑郁药物 R/S-米氮平与有机羧酸的一些分子盐、其盐酸盐和米氮平半水合物进行了结晶,并通过 X 射线衍射、红外和拉曼光谱以及热分析进行了表征。尽管米氮平碱在高于环境条件下升华,但其分子盐即使在升高的温度下也不表现出任何升华。晶体结构分析表明,半己二酸盐中的质子转移发生与ΔpKa规则相反。 N+–H⋯O− 和 C–H⋯O− 氢键的强离子两点合成子是 Mirtazapinium 羧酸盐晶体结构中重复出现的基序。