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Metal complexes of macrocyclic ligands. Part XXIV. Binuclear complexes with tetraazamacrocycle-N,N′,N″,N‴-tetraacetic acids

✍ Scribed by Andreas Riesen; Margareta Zehnder; Thomas A. Kaden

Publisher
John Wiley and Sons
Year
1986
Tongue
German
Weight
410 KB
Volume
69
Category
Article
ISSN
0018-019X

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✦ Synopsis

Basel

(13.VIII.86

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Metal complexes of macrocyclic ligands.
Metal complexes of macrocyclic ligands. Part XXIII. Synthesis, properties, and structures of mononuclear complexes with 12- and 14-membered tetraazamacrocycle-N,N′,N″,N‴-tetraacetic Acids
✍ Andreas Riesen; Margareta Zehnder; Thomas A. Kaden 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 German ⚖ 439 KB 👁 2 views

The two tetraazamacrocycle-N.N',N",N"'-tetraacetic acids H,dota and H,teta form with Ni2+, Cu2+, and Zn2+ (M") mononuclear complexes MLH, and M'[ML], M' being an alkaline earth ion. The structures of Ni(H2dota) and Cu(H,dota) have been solved by X-ray structure analysis. The metal ions are in a dist

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## Abstract The complexation kinetics of the two macrocycles **1** and **2** with Co^2+^, Ni^2+^, Cu^2+^ and Zn^2+^ have been measured by pH‐stat techniques. The rates are first order in metal and ligand concentration and depend upon the pH. This results from the different reactivities of the vario