𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Stabilité des carboxylates de terres rares, IV N-acétylglycinates

✍ Scribed by R. Roulet; R. Chenaux; T. Vu Duc

Publisher
John Wiley and Sons
Year
1971
Tongue
German
Weight
280 KB
Volume
54
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The stability constants of N‐acetylgycinates of some rare earths in aqueous solution have been determined by a potentiometric method, and by a solvent extraction technique. The ligand forms 1:1 complexes which are stabilized by relatively large positive entropies of formation, the corresponding enthalpies being endothermic. This backs up the assumption that a conjugate base of an amino acid forms innersphere complexes and acts as a unidentate ligand towards a rare earth cation, like a simple carboxylate.

📜 SIMILAR VOLUMES

Stabilité des carboxylates de terres rar
Stabilité des carboxylates de terres rares I Furanne- et thiophène-carboxylates-2
✍ R. Roulet; J. Feuz; T. Vu Duc 📂 Article 📅 1969 🏛 John Wiley and Sons 🌐 German ⚖ 205 KB

ler X 69) Summuvy. The stability constants of 2-furanccarboxylates and 2-thiophencarboxylates of some rare earths have been determined a t ionic strength 0.100 (NaC10,) a t 25.0"C by a potentiometric method. The ligands form 1 : 1 coniplexes similar t o the rare carths propionates.

Stabilité des carboxylates de terres rar
Stabilité des carboxylates de terres rares, II. Bis-hydroxyméthyl-2,2-propionates
✍ R. Roulet; T. Vu Duc 📂 Article 📅 1970 🏛 John Wiley and Sons 🌐 German ⚖ 230 KB

## Abstract The stability constants of 2, 2‐bis‐hydroxymethyl‐propionates of rare earths have been determined at ionic strength 0,100 (NaClO~4~) at 25.0°C by a potentiometric method. The ligand forms 1 : 1 and 1 : 2 complexes with all the rare earths and weak 1 : 3 complexes with light rare earths

Stabilité des carboxylates de terres, II
Stabilité des carboxylates de terres, III. Maléates, méthylsuccinates et malates
✍ R. Roulet; J. Feuz; T. Vu Duc 📂 Article 📅 1970 🏛 John Wiley and Sons 🌐 German ⚖ 269 KB

## Abstract The stability constants of maleates, methylsuccinates and malates of rare earths have been determined at 25.0 °C and at ionic strength 0,100 (NaClO~4~) by a potentiometric method. Each ligand forms 1 : 1 and 1 : 2 complexes in aqueous solution, the malates being the most stable. The fir

Determination Rapide de la Configuration
Determination Rapide de la Configuration Cis Trans des Alcenes CHCHCH Utilisation des Complexes de Terres Rares
✍ G. J. Martin; N. Naulet; F. Lefevre; M. L. Martin 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 English ⚖ 481 KB

In Z-CH-CH=CH-Y compounds (Z or Y being an alkyl group) the ethylenic part of the spectra is often very complex and the 3J(H-C=C-H) coupling constant which is a good tool for determining the configuration, is not easily determined. We have studied such allylic derivatives and many configurations hav