Die Komplexbildung der neutralen Amidgruppe mit Cu2+ in wässeriger Lösung
✍ Scribed by Th. Kaden; A. Zuberbühler
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- German
- Weight
- 467 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Suvnmary. The interaction between Cu2+ and the terdentate ligands N-picolinoyl-ethylenediamine, glycine-2-pyridylmethylamide, Na-(Z-pyridylmethyl)-glycinamide and Na-(Z-pyridylmethyl)-glycine-ethylamide, respectively, has been studied by spectrophotometry and potentiomctry. At high pH values the ionised amide group undergoes complex formation and the resulting chclates have similar structures and stabilities. In slightly acidic solution however, each ligand gives rise to a different species. These facts are explaincd by assuming that the neutral amide group coordinates through its carbonyl oxygen atom. The stability constant and the absorption spectrum of each complex have been calculated by computer programmes.
l)
2,
Partie de la t h k e de doctorat de GdrardGast, Neuchbtel, mars 1971, qu'on consultera pour plus de details. A qui toute correspondance doit &tre adressde.
📜 SIMILAR VOLUMES
## Abstract __Raney__‐Nickel ist auch für die katalytische Reduktion von aromatischen Nitroverbindungen in wässeriger Lösung geeignet. Der neu entwickelte, sogenannte „Nickelformiat‐Paraffin‐Katalysator”︁ bietet aber im Vergleich zu __Raney__‐Nickel und hinsichtlich dieser Anwendung mehrere Vorzüge
## Abstract Die Decarboxylierung von 2‐Hydroxynaphtoesäure‐(1) in wässeriger Lösung verläuft nach der Reaktionsgeschwindigkeitsgleichung __v__ = __k__ [HA] = __k__ [A^−^] [H~3~O^+^]. Die ARRHENIUS‐Parameter liegen in der gleichen Grössenordnung wie bei den 4‐substituierten Salicylsäuren. In Acetatp
The state of iron(III)‐hydroxide in aqueous solutions of very low concentrations has been investigated using ^59^Fe as tracer. From very dilute solutions (10^−5^ M, 10^−7^ M and 10^−9^ M) brought to a pH between ∼ 5–12 practically all the iron hydroxide can be sedimented by ultracentrifugation. The