摘要
A number of terminal N-alkylated linear tetraaza and pentaaza ligands were prepared. Their ligand protonation constants and some transition and post-transition metal (Ni2+, Cu2+, Zn2+, and Cd2+) complex stability constants were determined by potentiometric titration methods. In general, methylation and ethylation at the terminal nitrogen atoms caused the corresponding ligand nitrogen basicity to increase; however, the corresponding metal complex stabilities were decreased compared to the non-alkylated structural analogs, presumably due to a steric effect.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 753-759 |
頁數 | 7 |
期刊 | Journal of the Chinese Chemical Society |
卷 | 45 |
發行號 | 6 |
DOIs | |
出版狀態 | 已出版 - 1998 |