配合物[Cu(HPHAc)2(py)2](H2PHAc=苯羟乙酸，py=吡啶)的合成和晶体结构

The novel copper(Ⅱ) complex with α-hydroxyphenylacetic acid (H₂PHAc) and pyridine (py) ligands, [Cu(HPHAc)₂(py)₂], has been synthesized and characterized by elemental analysis and IR spectroscopy. Its crystal structure was determined by single crystal X-ray diffraction techniques. The crystal belongs to monoclinic with space group C2/c. The cell parameters are: a=1.712 5(3) nm, b=1.533 2(2) nm, c=0.963 42(14) nm, β=111.866(2)°, V=2.347 6(6) nm³, and D_c=1.483 Mg·m^-3, Z=4, F(000)=1 084. The structure was refined to final R₁=0.071 4, wR₂=0.166 1. The complex has a six-coordinated distorted octahedral geometry, in which copper(Ⅱ) ion coordinates with two carboxylic oxygen atoms and two hydroxyl oxygen atoms from the two α-hydroxyphenylacetic acid ligands, two nitrogen atoms from the two pyridine ligands. The analysis of the crystal structure indicates that the complex has a one-dimensional chain structure, which is formed by intermolecular hydrogen bonds. CCDC: 255346.     

淤浆法制备的羧甲基纤维素钙素片的崩解性

采用淤浆法新工艺制备了药剂辅料用羧甲基纤维素钙（Ca-CMC),并与常用崩解剂,根据其方法制备的Ca-CMC进行了比较,添加淤浆法制备的羧甲基纤维素钙的素片崩解速度最快,且产物中无钙化剂残留,其它技术指标达到药剂辅料要求,文中还对制备过程中Ca^2 不能完全取代Na^ 的原因做了分析。     

西咪替丁胶囊稳定性原则

用经典恒温加速试验对南朗医院生产的西咪替丁胶囊作加速试验探讨其稳定性,结果表明,西咪替丁胶囊在室温25C时含量下降10％所需时间为3．343年。