New poly(amide-imide)s were prepared from a diimide-dicarboxylic acid, 1,4-bis(4-trimellitimidophenoxy)-2-tert-butylbenzene (BTTB), with various diamines by the direct polycondensation in N-methyl-2-pyrrolidinone (NMP) using triphenyl phosphite and pyridine as condensing agents. The new diimide-dica
✦ LIBER ✦
Synthesis and Characterization of New Macrocyclic Cu(II) Complexes from Various Diamines, Copper(II) Nitrate and 1,4-Bis(2-formylphenoxy)butane
✍ Scribed by Salih ILHAN; Hamdi TEMEL; Ahmet KILIC
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 74 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0256-7660
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## Abstract The stability constants of the Cu^II^ chelates with the tripodal heptadentate ligand tris{2‐[(2‐pyridylmethyl)amino]ethyl}amine (=__N__′‐(pyridin‐2‐ylmethyl)‐__N,N__‐bis{2‐[(pyridin‐2‐ylmethyl)amino]ethyl}ethane‐1,2‐diamine; tpaa), determined by potentiometry and UV spectrometry, show t