1,9-双(1'-苯基-3'-甲基-5'-氧代吡唑-4'-基)壬二酮-〔1,9〕与氯化四苯砷对硫氰酸铁的协同萃取

Study on Synergic Extraction of Ferric Thiocyanate By 1,9-Bis ( 1' -phenyl-3' -methyl-5' -oxopyrazole-4' -yl) -1, 9-nonanedione (H_2A) and Tetraphenylarsonium Chloride

本文研究了在0.1 mol·L^(-1)硝酸介质中,题示试剂(H_2A和Ph_4AsCl)对硫氰酸铁的协同萃取机理.结果表明,协萃效果明显,协萃系数为7.88,斜率法测得协萃络合物组成为Fe(SCN)_2APh_4As,协萃平衡常数(lg Kse)为4.24±0.27,推测了协萃络合物的可能结构.

In this paper, the synergic extraction mechanism of ferric thiocyanate by H2A and Ph4AsCl in chloroform from 0,1M nifric acid medium has been studied. The experiment shows that the synergic effect is apparent with the synergic coefficient 7.88. The composition of the synergic extracting complex [ Fe ( SCN) 2A] Ph4As has been comfirmed by the slope method. The synergic extracting equilibrium constant (1gKSe) is 4.24±0.27. The probable structure has been discussed.