| 希土与L-甲状腺素(T4)相互作用的研究 | |
| STUDIES ON THE INTERACTION OF RARE EARTH IONS WITH L-THYROXINE | |
| 摘要: 在二甲亚砜-水混合溶剂中用pH电位法测定了T4的质子化常数以及与五种希土离子(Pr3+、Eu3+、Gd3+、Tb3+、Yb3+)生成配合物的稳定常数。体系中主要生成110型配合物，紫外吸收光谱，HNMR表明，在较低pH值，T4通过羧基与希土配位，pH较高时，氨基也相继配位。配位键以离子性为主，荧光光谱表明，T4对中心希土离子的荧光有猝灭作用。 | |
| 关键词: 希土 L-甲状腺素 配合物 | |
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| Abstract: Rare earth-T4(L-thyroxine) systems were studied with pH potentiometry in the mixed solvents (DMSO/H2O=50% V/V)(37℃, 0.15 mol·L-1NaCl). The protonation constants of T4 and the stability constants of the rare earth complexes with T4 (RE=Pr, Eu, Gd, Tb, Yb) were obtained. The results of UV, HNMR and fluorescence spectra studies show that T4 can coordinate to are earth ions through its -COO- group at lower pH value and via its -NH2 group at higher pH value also. The coordination bonds of the complexes are predominantly ionic. | |
| Keywords: rare earth L-thyroxine complex | |
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| 高峰,牛春吉,倪嘉缵,金天柱,王瑞瑶,王祥云.希土与L-甲状腺素(T4)相互作用的研究[J].无机化学学报,1997,13(2):119-123. | |
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