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
摘要用
次磷酸铵和六甲基二
硅氮烯的混合物处理酰
氯,得到1-羟基-1,1-双
次膦酸。通过pH-电位技术测定1-羟基-1,1-双
次膦酸的酸解离常数(p K a)。1-羟基-1-苯基甲基-1,1-双(H-
次膦酸)(H
BPA 1)与Ca 2+以及过渡
金属Fe 2 +,Ni 2 +,Cu 2 +,Cr 3+的络合特性和
镧系离子La 3+,Gd 3+在
水溶液中研究。测定了H
BPA 1与这些离子在
水溶液中的配合物的稳定能力,以显示由于过渡
金属导致的配合物稳定性的显着差异。 图形概要1-羟基-1,1-双(H-
次膦酸)与
金属的配位。