合成并表征了5个多胺配体N,N'-二(1,10-菲罗啉-2-亚甲基)-1,2-乙二胺(L1),1,7-二(1,10-菲罗啉-2-亚甲基)-1,4,7-三氮杂庚烷(L2),1,10-二(1,10-菲罗啉-2-亚甲基)-1,4,7,10-四氮杂癸烷(L3),1,13-二(1,10-菲罗啉-2-亚甲基)-1,4,7,10,13-五氮杂十三烷(L4),N,N'-二(1,10-菲罗啉-2-亚甲基)-1,3-丙二胺(L5).利用pH电位滴定法在25.0 ± 0.1 ℃时测定了这5个配体的质子化常数及其与Co(Ⅱ),Ni(Ⅱ),Cu(Ⅱ)和Zn(Ⅱ)形成配合物的稳定常数,并且试图解释了这5个系列配合物的差异.%Five multidentate ligands: N,N'-di (1,10-phenanthroline-2-methylene)-1,2-ethylenediamine (L1),1,7-di(1,10-phenanthroline-2-methylene)-n- 1,4,7-triazaheptane (L2), 1, 10-di (1, 10-phenanthroline-2-methylene)-n- 1,4,7,10-tetraazadecane (L3), 1,13-di (1,10-phenanthroline-2-methylene)-n- 1,4,7,10,13-pentaazatridecane (L4), N,N' -di(1,10-phenanthroline-2-methylene)-1,3-diaminopropane(L5) were synthesized and characterized. The stability of the complexes of the five ligands with transition metal ions Co(Ⅱ), Ni(Ⅱ), Cu(Ⅱ) and Zn(Ⅱ) was studied by the potentiometric technique in water and I=0.1 mol·dm-3 KNO3 at 25.0 ± 0.1 ℃, respectively. The difference among the five series of complexes is tentatively explained.
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