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《Journal of Coordination Chemistry》2012,65(14):1179-1190
Mononuclear and homobinuclear o-cresolphthalein complexone complexes with VO2+, Cr3+, MoO+, and UO2 2+ have been prepared and their structures investigated. The empirical formulas, the mode of bonding, and the geometry of the complexes were obtained from elemental and thermal analyses, IR, electronic and ESR spectra, magnetic moment determinations, DC and CV polarographic studies. 相似文献
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《Journal of Coordination Chemistry》2012,65(10):813-824
Heterobinuclear metal chelates of Mn2+, Co2+ or Cu2+ and some transition metal ions with o-cresolphthalein complexone have been prepared and characterized. Elemental analyses are in agreement with proposed formulae. Thermal analyses (TGA and DTA) were used to determine the degradation products; some thermodynamic parameters were calculated. IR and UV-Vis spectra identified the mode of bonding between the metal ions and the ligand as well as its geometry. Magnetic moment determination and ESR spectra of the heterobinuclear complex revealed some antiferromagnetic interaction between the metal ions, which depends mainly on the two metal ions forming the chelate. Electrochemical studies of the complexes [DC-polarography and cyclic voltammetry (CV)] confirmed the existence and the nature of the metal ions in the chelate. 相似文献
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邻—甲酚酞络合酮吸光光度法连续测定血清中钙和镁 总被引:6,自引:1,他引:5
利用邻-甲酚酞络合剂为显色剂建立了连续测定血清钙和镁的吸光光度法,钙和镁与该显色剂在PH11的碱性缓冲液中形成紫色络合物,于570nm波长处均表最大吸收,且曲线具有加和性。先测得钙镁吸光度之和,加入8-羟基喹啉以掩蔽镁离子的干扰后测得钙的吸光度,两者之差即为镁的吸光度。钙和镁的摩尔吸光系数分别为2.14×10^4和1.51×10^4,方法应用于血清样品中钙和镁的连续测定,结果令人满意。 相似文献
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