| 铜(Ⅱ)-氨基酸水杨醛席夫碱-α-氨基酸三元配合物的稳定性研究 |
| A STUDY ON STABILITY OF TERNARY MIXED LIGAND COMPLEXES FORMED N-SALICYLIDENEAMINO ACID AND α-AMINO ACID WITH COPPER(Ⅱ) |
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| 摘要: 在25±0.1℃、I=0.1 mol·L-1 KNO3条件下，应用pH法测定了氨基酸水杨醛席夫碱(Sal∶A，A配体)-α-氨基酸(Aa,B配体)三元配合物的稳定常数，实验发现在三元配合物的稳定性与B配体的碱性之间存在良好的线性自由能关系。同时，以稳定性数据为探针，研究了三元配合物分子内存在的配体间疏水缔合作用。 |
| 关键词: 铜(Ⅱ) 直线自由能关系 席夫碱 α-氨基酸 疏水缔合作用 |
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| Abstract: The formation constants of the ternary complexes of type CuAB have been determined by means of pH method at 25±0.1℃ in the presence of 0.1 mol·dm-3KNO3, where A=N-salicylidenephenylalanine(Sal∶P), N-salicylideneleucine(Sal∶L),N-salicylidenealanine(Sal∶An) and N-salicylideneglycine(Sal∶G),and B=glycine(Gly),L-sercine(Ser),L-valine(Val), L-leucine(Leu), L-isoleucine(Iso) and L-proline(Pro). It was found that the linear free energy relationship(LFER) exist nicely between the stability of ternary complexes and the base strength of the B ligands. The lgKΔ were used to character the stability of ternary complexes related to the stability of parent binary complexes. The hydrophobic ligandligand interaction in the molecules of the CuAB were studied. |
| Keywords: copper(Ⅱ) LFER Schiff base α-amino acid hydrophobic ligand-ligand interaction |
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| 刘树祥,田君濂,田来进,毕思玮,潘锋,曹沛森.铜(Ⅱ)-氨基酸水杨醛席夫碱-α-氨基酸三元配合物的稳定性研究[J].无机化学学报,1997,13(1):53-57. |
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