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用一种新的分离方法-离子浮选法对Co(Ⅱ)-P_2O_7~(4-)-月桂胺(C_(12)H_(25)NH_2)三元配合物进行了研究.利用摩尔比法和斜率比法测得在实验浓度范围内,生成两种颜色很浅的配合物,其组成为[Co(P_2O_7)]·[RNH_3]_2和[Co(P_2O_7)_2]·[RNH_3]_6.在25±0.5℃,μ=0.1(NaNO_3)条件下,利用Bjerrum-Rossotti作图法求得Co(Ⅱ)-P_2O_7~(4-)lgβ_1=6.19,该值与文献值十分吻合.并获得lgβ_2=10.69.采用微机统计分析,得到与作图法一致的结果.本文给出两种三元配合物结构,指出月桂胺中N未参加配位,红外光谱,核磁共振波谱及电子光谱支持上述结论.
The ternary complex of Co (Ⅱ) -P_2O_7 ~ (4 -) - laurylamine (C_ (12) H_ (25) NH_2) was studied by a new separation method - And slope ratio method were measured in the experimental concentration range, the formation of two very light color complexes, its composition [Co (P_2O_7)] [RNH_3] _2 and [Co (P_2O_7) _2] [RNH_3] _6. Co (Ⅱ) -P_2O_7 ~ (4-) lgβ_1 = 6.19 was obtained by Bjerrum-Rossotti mapping at 25 ± 0.5 ℃ and μ = 0.1 (NaNO_3) = 10.69. The results of the method are consistent with those of the mapping method by using computer statistical analysis.Two kinds of ternary complex structures are given in this paper, which indicate that N did not participate in coordination in lauramine, IR, NMR and electron spectroscopy support these conclusions .