Hydroxy-bisphosphinic acids: synthesis and complexation properties with transition metals and lanthanide ions in aqueous solution
Hydroxy-bisphosphinic acids: synthesis and complexation properties with transition metals and lanthanide ions in aqueous solution
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DOI：
10.1007/s13738-015-0787-5
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发表时间：
2016-04-01
影响因子：
2.4
通讯作者：
Yokomatsu, Tsutomu
中科院分区：
文献类型：
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作者：
Kaboudin, Babak;Ezzati, Ali;Yokomatsu, Tsutomu
酰氯与次磷酸铵和六甲基二硅氮烯的混合物反应得到1-羟基-1，1-双次膦酸。用pH电位法测定了1-羟基-1，1-二次膦酸的酸离解常数（pKa）。研究了1-羟基-1-苯甲基-1，1-双（H-次膦酸）（HBPA 1）与Ca 2+、过渡金属Fe 2+、Ni 2+、Cu 2+、Cr 3+和镧系离子La 3+、Gd 3+在水溶液中的络合性能。HBPA 1与这些离子在水溶液中的络合物的稳定能力被确定为显示出由于过渡金属的络合物稳定性的显着差异。
Treatment of acyl chlorides with a mixture of ammonium hypophosphite and hexamethyl disilazene gave 1-hydroxy-1,1-bisphosphinic acids. Acid dissociation constants (pKa) of 1-hydroxy-1,1-bisphosphinic acids were determined by the pH-potentiometric technique. Complexation properties of 1-hydroxy-1-phenylmethyl-1,1-bis(H-phosphinic acid) (HBPA 1) with Ca2+ as well as transition metals Fe2+, Ni2+, Cu2+, Cr3+ and lanthanide ions La3+, Gd3+ were studied in aqueous solution. The stabilizing ability of complexes of HBPA 1 with these ions in aqueous solutions was determined to show a significant difference in the complex stability due to the transition metals.