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草酸铁(Ⅲ)钾是光敏感的,目前仍是一种常用的化学光量计。为了比较它与草酸根中的一个氧原子被硫取代生成的不对称配位体与铁(Ⅲ)形成的配合物对光的稳定性,我们研究了硫代草酸铁(Ⅲ)配合物的光化学。实验表明硫代草酸铁(Ⅲ)配合物也是光敏感的,但与草酸铁(Ⅲ)钾比较,在酸性溶液中会发生酸性水解。本文报导在恒离子强度0.1mol·1~(-1)(KCl),pH=4.05的Clark-Lubs缓冲溶液中的光化学。
Potassium oxalate (III) is light-sensitive and is still a commonly used chemical light meter. In order to compare the light stability of a complex formed with an asymmetric ligand produced by sulfur substitution of one oxygen atom of oxalate with iron (III), we studied the photochemistry of iron (III) thiooxo complexes . Experiments have shown that iron (III) thiooxo complexes are also light-sensitive, but acidic hydrolysis occurs in acidic solutions as compared to iron (III) oxalate. This paper reports the photochemistry of Clark-Lubs buffer solution with constant ionic strength of 0.1 mol · 1 -1 (KCl) and pH = 4.05.