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The Polymerization of Tetrahydrofuran Initiated by Niobium(V) and Tantalum(V) Halides

✍ Scribed by Fabio Marchetti; Guido Pampaloni; Timo Repo


Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
266 KB
Volume
2008
Category
Article
ISSN
1434-1948

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πŸ“œ SIMILAR VOLUMES


Adducts of Niobium (V) and Tantalum (V)
✍ Christian M. P. Favez; AndrΓ© E. Merbach πŸ“‚ Article πŸ“… 1977 πŸ› John Wiley and Sons 🌐 German βš– 414 KB

The ligand exchange MX5 . L + \*L 8 MX, . \*L + L for the octahedral adducts MX, . L, in an inert solvent (CH2CI2 or CHCI,) with neutral ligands, proceeds via a dissociative D mechanism when M = Nb, X = C1 and L= phosphoryl compound. A dissociative interchange Id mechanism is suggested when M = N b

Adducts of niobium(V) and tantalum(V) ha
✍ Christian M. P. Favez; Henri Rollier; AndrΓ© E. Merbach πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 German βš– 461 KB

## Abstract The adducts of niobium(V) and tantalum(V) halides with some phosphoryl compounds have been studied in chloroform solution by ^1^H‐ and ^19^F‐FT‐NMR. spectroscopy. These octahedral adducts of general formula MX~5~ Β· L (M = Nb, Ta; X = F, Cl, Br; L = phosphoryl ligand) are monomeric and n

Adducts of Niobium(V) and Tantalum(V) Ha
✍ RenΓ© Good; AndrΓ© E. Merbach πŸ“‚ Article πŸ“… 1974 πŸ› John Wiley and Sons 🌐 German βš– 364 KB

## Abstract The relative stability of adducts formed by Nb(V) and Ta(V) pentachlorides and bromides with some dimethylchalcogenides and nitriles has been determined by ^1^H‐NMR. in dichloromethane at βˆ’ 60Β°. The stabilities are explained in terms of the HSAB principle and __JΓΈrgensen__'s symbiotic e

Peroxo salts as initiators of vinyl poly
✍ G. Manivannan; P. Maruthamuthu πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 199 KB

Almraet--Aqueous thermal polymerization of acrylonitrile (AN) initiated by peroxomonosulphate (HSO~, PMS)-thioglycolic acid (TGA) redox system was studied in the temperature range 30-60 Β°. The effects of [monomer], [initiator], [reducing agent], pH, ionic strength and temperature on rate of polymeri